IS8329 : 2000 Indian Standard CENTRIFUGALLY CAST (SPUN) DUCTILE IRON PRESSURE PIPES FOR WATER, GAS AND SEWAGE - SPECIFICATION ( Third Revision) ICS 23.040.10; 23.040.40 0 BIS 2000 BUREAU MANAK OF BHAVAN, INDIAN STANDARDS ZAFAR MARG 9 BAHADUR SHAH NEW DELHI 110002 February 2000 Price Group 8 Pig Iron and Cast Iron Sectional Committee, MTD 6 FOREWORD This Indian Standard (Third Revision) was adopted by the Bureau of Indian Standards, after the draft finalized by the Pig Iron and Cast Iron Sectional Committee had been approved by the Metallurgical Engineering Division Council. This standard was first published in 1977 and then revised in 1990 and 1994. While revising this standard, in light of the experience gained during these years, the committee has decided to revise this standard taking note of the revision and publication of EN 545 : 1994 and IS0 2531 : 1998 (E). In this revision the following main modifications have been made: 4 Definition of various terms have been included to avoid ambiguity; have been incorporated aligning them with IS0 253 1 : 1998 (E) b) Dimensions from DN 80to DN 2000 and EN 545 : 1994; c) Thickness of Class K7 and K8 have been increased based on current International practice and method of production facilities in this country; 4 Requirements for coating and lining have been modified, 4 To have a proper control on the quality of the pipes, a clause on quality assurance has also been incorporated; The standard has been generally updated taking into account the modern trend in this respect in fl other International specifications particularly the current changes made in EN 545 : 1994 and IS0 253 1 : 1998 (E); and g) As per current international practice, requirements of mass has been deleted from the standard. Ductile iron, also called nodular iron or spheroidal graphite iron, is characterized by the presence of graphite in nodular or spheroidal form in the resultant casting. It differs from cast iron by greater tensile strength and its significant elongation at break. Ductile iron offers: a) b) high resistance against breakage due to impact; high tensile strength, comparable to that of mild steel so that the pipes can be used for higher working pressure; c) traditional corrosion resistance, comparable to that of cast iron; and d) lighter in mass as compared to cast iron pipes. In order to have International co-ordination and harmonization with other International Standards, assistance has been derived from the following publications: IS0 2531 : 1998(E) Ductile iron pipes, fittings and accessories and their joints for water or gas application, issued by the International Organization for Standardization (ISO) Ductile iron products for sewage applications Ductile iron pipes for pressure and non-pressure pipelines cement mortar lining - General requirements Ductile iron pipes layer Ductile iron pipes layer Centrifugal IS0 7186 : 1996(E) IS0 4179 : 1985 IS0 8179-l : 1995 IS0 8179-2 : 1995 IS0 8180 : 1985 External coating: Part 1 Metallic zinc with finishing External coating: Part 2 Zinc rich paint with finishing sleeving (Continued on third cover) Ductile iron pipes -Polyethylene which are not with in the scope of this standard.SPECIFICATION ( Third Revision ) 1 SCOPE 1. cement (first revision) Ductile iron fittings for pressure pipes for water. the following definitions shall apply: 3. 1. .IS 8329 : 2000 Indian Standard CENTRIFUGALLY CAST (SPUN) DUCTILE IRON PRESSURE PIPES FOR WATER. gas and sewage Methods of sampling of cast iron pipes and fittings Sulphate resisting Portland cement Cast iron specials for mechanical and push-on-flexible joints for pressure pipelines for water. 3. when the pressure requirements matches.2 This standard also specifies requirements 1608 : 1995 5382 : 1985 6452 : 1989 6909 : 1990 8112 : 1989 9523 : 1980 11606 : 1986 12330 : 1988 13382 : 1992 Title Portland slag cement (fourth revision) Sheet rubber jointing and rubber insertion jointing (second revision) General requirements for supply of metallurgical materials (second revision) Methods for Brine11hardness test for metallic materials (second revision) Mechanical testing of metals Tensile testing (second revision) Rubber sealing ring for gas mains. dimensions and tolerances. for materials.sandor mineral basedmaterials usedin foundry trade irrespectiveofthe type of bonding agents.Casting of uniform bore.4 This standard does not include the provisions for fittings used with the pipes conforming to this standard. water mains and sewers Cfirst revision) Specification for high alumina cement for structural use Specification for supersulphated cement 43 grade ordinary Portland.2. mechanical properties and standard coatings and linings of ductile iron pipes. At the time of publication. having either socket. spigot or flanged ends. flanged or spigot ends for jointing by means of various types of gaskets.1 This standard specifies the requirements and associated test methods applicable to ductile iron pipes manufactured in metal (lined or unlined) or sand moulds and their joints for the construction of pipe lines: the editions indicated were valid. sewage or gas to be installed below or above ground operated with or without pressure 455 : 1989 638 : 1979 1387 : 1993 NOTES I By sand it is to be understood. All standards are subject to revision and~parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below: IS No. and normally to be delivered externally and internally lined and are suitable for fluid temperatures between 0°C and 5O”C.3 The standard applies to pipes. 1. 1.1 Ductile Iron . excluding frost.5 Fittings conforming to IS 13382 may also be used with ductile iron pipes. in which graphite is present primarily in spheroidal or nodular form.1 This standard does not restrict the use of other types of joints or future developments of other joints as long as overall dimensions are maintained for reasons of safety and interchangeability. GAS AND SEWAGE . For the purpose of this standard.2 Pipe. 1500 : 1983 2 All pressures are relative pressures expressed in MPa (IMPa = 10 bar).Type of iron used for pipes. 1. constitute provisions of this standard. which through reference in this text. 2 REFERENCES The following Indian Standards contain provisions.0 1. - to convey water. straight in axis. A separate standard IS -9523 covers the specification on such fittings. which are: manufactured with socketted. gas and sewage 3 TERMINOLOGY 3. [this is the selected coefficient inserted into the equation (1) in 4. In addition flanged-sockets.Flexible joint in which sealing is obtained by applying pressure to the gasket by mechanical means..18 Allowable Maximum Operating Pressure (MOP) . in one or several parts bolted together. 3.3Fitting -Casting other than a pipe which allows pipeline deviation. 3. 3. the effective length is equal to the overall length minus the spigot insertion depth. change of direction of bore.9 Joint .6 Spigot - Male end of a pipe or fitting.Quantity of castings from which a certain number of samples may be taken for testing purposes during manufacture. an adjustable flange comprises a ring. 2 4. 3. 3. 3. K9.7 Socket . for example a gland.Flat circular end of a pipe or fitting. extending perpendicular to its axis. which is related to the design pressure ofthe pipeline and is intended to ensure its integrity and leaktightnens.5 + 0. 3. All components of the same nominal size DN designated by the same PN number have compatible mating dimensions.. in order to measure the integrity and tightness of the pipeline. 3.13 Restrained Joint .Out of roundness of a pipe section.21 Length . excluding surge.Joint which provides significant angular deflection and movement parallel and/or perpendicular to the pipe axis. 3.1 Pipes have been classified as K7. 3.4 Accessory -Any item other than a pipe or fitting which is used in a pipeline. 3. NOTE . 3.Female end of a pipe to make the joint with the spigot of an adjacent component.. including surge. 3. which bears on an endjoint hub and can be freely rotated around the pipe axis before jointing. NOTE .3 depending on the service conditions].5 Flange .A numerical designation expressed by a number which is used for reference purposes.A flexible joint in which an elastomeric gasket is located in the socket and the joint assembly is effected by entering the spigot through the gasket into the socket. For socketted pipes. when either fixed above ground level or laid and backfilled underground. It is a convenient round number for reference purposes and is only loosely related to manufacturing dimensions. and K = the whole number coefficient. it is equal to lOO{(A.-A. the effective length is equal to the overall length and is noted L.Connection between the ends of pipes in which a gasket is used to effect a seal.. 4 CLASSIFICATION 4. that a component can safely withstand in service. bolts and locking rings or segments for restrained joints. a whole number used for thickness class designation. KIO.11 Push-on Flexible Joint . and K12. that a component can safely withstand in permanent service. as shown on the drawings of Table 2.20 Batch .+A. NOTE -A flange may be integrally cast.(1) DN = the nominal diameter. K8.2 The class designation shall comprise of: a) b) a prefix K. 3.16 Nominal Pressure (PiV) .Effective length of a pipe. glands. 3.15 Nominal Size (ON) .3 The wall thickness of pipe ‘e’ in mm shall be calculated as a function of the nominal diameter by the following equation with minimum of 5 mm for K=7. Joint between two flanged 3.Valves and hydrants ofall types are not covered by the term accessory.)}.14 Flanged Joint ends.8 Gasket Sealing component of a joint.Maximum internal pressure. . where A. 4.10 Flexible Joint . depending on service conditions manufacturing process.. such as: glands and bolts for mechanical flexible joints. with bolt holes equally spaced on a circle.Numerical designation of size which is common to all components in apiping system.Joint wherein a means is provided to prevent separation of the assembled joint.)l(A. 3. e where e = wall thickness in mm. flanged-spigots and collars are also classified as fittings.6mmforK=8and7mmforK=12.. NOTE .IS8329:2000 3. 3. is the maximum axis and A.For flanged pipes.001 Oh') . the minimum axis of the pipe cross-section.19 Allowable Site Test Pressure (STP) Maximum hydrostatic pressure that a newly installed component can withstand for a relatively short duration.22 Ovality . threaded-on or weldedon or adjustable. 3.This test pressure is different from the system test pressure. = K (0.17 Allowable Operating Pressure (AOP) Internal pressure.12 Mechanical Flexible Joint . 1 Push-on-Joint 6.2.5 and 4. which bears on an end joint hub and can be freely rotated around the pipe axis before jointing.450 500 .0 MPa may be of screwed onflanged 3 type or flanges may be welded on plain ended ductile iron pipes. Such pipes shall comply with all the requirements of this standard with the exception of wall thickness ‘e’ which will be as per the calculated wall thickness. the flanges shall be at right angle to the axis of the pipe and shall be machined on face.1 The dimensions and tolerances of the flanges of pipes and fittings shall be such. the method of screwing and the exact form of thread are left to the . in one or several parts assembled together. 6. the spigot ends shall be suitably chamfered or rounded off to facilitate smooth entry of pipe in the socket fitted with the rubber gasket. Unless otherwise specified.5. 6. 6.KlO Sewers K7-K12 K7 . fittings.600 K9 Screwed on Flange Minimum PN 16 K9 PN25 K9 PN 40 K9 KlO PN 10 K9 K9 K9 K9 Welded on Flange Minimum PN16 K9 K9 K9 K9 PN25 K9 K9 K9 - PN 40 K9 KlO KIO Klb 700 -1 200 1 400 -2 000 KlO KlO KlO KlO KlO - KlO - 5 SUPPLY OF MATERIAL The general requirements relating to the supply of material shall be as laid down in IS 1387.KlO K7-KlO K9-KlO K9 .KlO 4. 6 JOINTS The joint design and gasket shape are outside the scope of this standard. valves) of the same DN and PN and adequate joint performance.2.2 For high pressure mains where working pressure isgreater than 2. 6.IS 8329 : 2000 4.0. suitable flexible joint may be preferred when the joint is restrained against axial movement.1.4 The value of K will depend on the following service conditions: Service Conditions Nominal Dia 80300 350 .2 Flanged Joint 6.6.2. Alternative types of sealing compound.3 and the pipes shall be marked in accordance with 17.gas and normal domestic sewage.6 Where pipes of classes other than those given in Table 1 are manufactured and supplied.KlO Gas Mains K9-K12 4.1. 700 -2 000 K7 . 6. 6.3 In case of ductile iron pipes with screwed on flanges or welded flanges.5 For screwed or welded eon flange pipes the minimum classes as per working pressure criteria are given below: Minimum Class for Ductile Iron Flanged Pipes Nominal Dia PN 10 80 .4 MPa. the manufacturer shall indicate whether his products are normally delivered with fixed flanges or loose flanges. 1.2. the sealing compound~applied to the threaded joint shall be suitable for use with ‘raw’ and~potable water (up to a temperature of 1OO’C). Although it does not affect interconnection.2.2.2 Flanged joints for working pressure ratings of 1. chemicals and town gas. The bolt holes shall be either cored or drilled.600 Water Main K9-K12 K8 . for pipes used for other duties such as carrying industrial effluents.5 The flange can be of adjustable type where the flange comprises of a ring.7 For screwed on flanged pipes. the wall thickness shall be calculated as per formula (1) given in 4.2. so as to ensure the interconnection between all flanged components (pipes. 6.4 The bolt hole circle shall be concentric with the bore and holes of the two flanges of the pipe shall be correctly aligned.1 Flanges for screwed on or Welded on Double Flanged Pipes should be preferably of Ductile Iron of 420 MPa minimum tensile strength and 5 percent minimum elongation at break and maximum hardness 250 HB. 6. 4. shall be compatible and may be the subject to agreement between the manufacturer and the purchaser. 6.6 The ductile iron pipes having screwed on flanges shall be sealed at the threaded joint between the pipe and theflange by a suitable sealing compound.2.1 In case of push-on flexible joints. 2 The mechanical acceptance tests shall be carried out on samples of ductile iron pipes which shall be grouped in following batch sizes. for example. performance measurement and 7. 7. shall not be rejected on that account alone.3.3 Flexible Joints and Interconnection Pipes with flexible joints shall be in accordance with 15 of this standard for their spigot external diameters DE and their tolerances.1 400 1 600 . a sample ring or bar shall be taken from the spigot end of pipe. adaptors). 9. The results obtained shall be taken to represent all the pipes of that batch. 200 Pipes 300600 700 . 6.1 Sampling criteria for various tests. The number of pipes for each batch shall be as laid down in 9. detrimental to their good quality. selection ofextemal diameter).3 In order to check compliance with the requirements specified in 10.2 000 100 Pipes 60 Pipes 40 Pipes 30 Pipes 9.IS 8329 : 2000 discretion of the manufacturer in view of the fact that flanges are never removed after screwing on the barrels of the pipes. DN (mm) 80250 Maximum Batch Size 2 For interconnection with existing pipelines. One test shall be conducted for every batch of production. This provides the possibility of interconnection between components equipped with different types of flexible joints.4 Restrained Joints The design of restrained joints for ductile iron pipelines and its requirements shall be subject to agreement between the purchaser and the manufacturer as agreed at the time of enquiry and order.3 Pipes centrifugally cast shall be heat-treated in order to achieve the necessary mechanical properties and to relieve casting stresses caused due to the method of manufacture and repair work. 4. 8S’While conveying potable water the gaskets should not deteriorate the quality of water and should not impart any bad taste or foul odour.2. the manufacturer’s guidance may be followed as to the appropriate means of intkrconnection (for example. or 8. 8 RUBBER GASKET 8. Their spigot external diameters DE and their tolerances shall be in accordance with requirements of 15.1 If necessary the pipes may be subjected to reheat treatment to ensure that Brine11 hardness does not exceed the specified value and the other mechanical properties specified in the standard are achieved.2. which may have external diameters not m compliance with 15. 6.1 Rubber gaskets used with push-on-joints mechanical joints shall conform to IS 5382. 9 SAMPLING 9. Minor defects arising out of manufacturing process may be rectified. NOTES 1 For interconnection with certain types ofjoints operating within a tighter tolerance range on DE. 8.1 The metal used for the manufacture of pipes shall be of good quality. commensurate with the mechanical requirements laid down in 10. 5 and 6. and which do not affect their serviceability. The pipes shall be sound and free from surface or other defects.8 Dimensions of screwed on flanges and welded on flanges for ductile iron pipes shall conform to the requirements of Tables 3. 8. 7.2 Material of rubber gaskets for push-on mechanical or flanged joints shall be compatible with the fluid to be conveyed at the working pressure and temperature. 6.1 Mechanical tests shall be carried out during manufacture. 7 MANUFACTURE 7. 4 . the manufacturer’s guidance may be followed as to the means ofensuringadequatejoint up to the highest pressures (for example. unless specified in this standard.3 Rubber gaskets for mechanical joint for conveyance of town gas may be suitably protected so that the elastomer does not come in direct contact with the gas. Pipes showing small imperfections inherited with the method of manufacture. shall be as laid down in IS 11606. 10 MECHANICAL TESTS 10. It shall be manufactured by any method at the discretion of the manufacturer provided that the requirements defined in this standard are complied with.2 The pipes shall be stripped with all precautions to avoid warping or shrinkage defects. by welding in order to remove surface imperfections and localized defects which do not affect the entire wall thickness provided that the repairs are carried out in accordance with a written assurance system and the repaired pipes comply with all the requirements of classes K9 and KlO with the approval of the purchaser.4 Rubber gaskets for use with flanged joints shall conform to IS 638.1 000 1 100 . 8 up to but not including 12 12 and over 2.0 20. mm* Nominal Diameter mm Tolerance on Diameter mm mm Centrifugally Cast Pipes: .6 Test Results Test results shall comply with the requirements given below: One test pieces obtained by cutting bars from spigot 5 . Two methods of measuring the tensile strength may be used at the manufacturer’s option: Method A -. it shall be taken as meeting the requirements of this standard. ’ 10.Machine the test bar to its nominal diameter *lo percent. The ends of the test bars shall be such that they will fit the testing machine.01 mm and use this measured diameter to calculate the cross-sectional area and the tensile strength.57 5.6 up to but not including 8 .02 0. 10.2 Brine11 Hardness Test When tested in accordance with IS 1500. 10. with a cylindrical part having the diameters given in 10.01 0.3. If both the test results satisfy the specified requirements.1.1. Method A Nominal Diameter mm Test Bar.1. the batch shall be deemed as not complying with this standard.18 0.03 10. The tensile testing machine shall have suitable holders or grips to suit the test bar ends so as to positively apply the test load axially. 4 The frequency oftesting is related to the system of production and quality control used by the manufacturer.2.7 All pipes from which bars have been cut shall be accepted by the purchaser as complete lengths. 10.05 6.5 Equipment and Test Method The samples shall be tested as per procedures laid down in IS 1608.52 3. the Brine11 hardness shall not exceed 230 HB on the external un-machined surface.5 3.1. 80 _ 1 000 1100-2000 MPa 420 420 10 7 The test bars shall have a gauge length at least five times the nominal test bar diameter. 2 For ductile iron pipes upto DN I 000ifthe tensile strength of specimen is not found within limits. 10. percent proof 0. Method B _ Nominal Area S.4 shall satisfy the following requirements: Nominal Diameter (DN) mm Minimum Tensile Strength Minimum Elongation at Break. and microstructure reveals 75 percent ferrite with spheroidal graphite and percentage elongation 5 7. within a specified tolerance on diameter (see 10. but in case of dispute the para!lel to axis sample shall be used.IS 8329 : 2000 10.0 10..1.2) fails in the test in the first instance. 3 For pipes of size not less than DN 900.0 5.0 6. Method B - 10.2 percent proof stress shall be measured when agreed to between the manufacturer and the purchaser at the time ofenquiry and order.2) and use the nominal area to calculate the tensile strength.less than 6 . Should either of these additional test pieces fail in the test. measure the actual diameter before the test with an accuracy of 0.3 A sample shall be cut from the spigot end of the pipe. two additional tests shall be made on test pieces selected from two other pipes from the same batch. the batch shall be accepted.1 Tensile Test of the test bar shall be as given below: 10.2 stress Z 270 MPa is permitted provided that elongation at break is not less than 12 percent.0 2. This sample may be cut perpendicular to or parallel with the pipe axis.02 0.1.1.4 Test Specimen end of one pipe selected for testing when tested in accordance with the methods specified in 10.1 If test piece representing a batch (see 9.1. It shall not be less than 300 MPa.0 30.1.5 5.2 The thickness of the sample and the diameter Castings Thickness Test Bar.1.3 Retest 10. or: NOTES 1 The 0. Percent A test bar shall be machined from each sample to be representative of the metal at the mid-thickness of the sample. Machine the test bar to its nominal area S. Test Pressure at Works for Ductile Iron Pipes (Clauses 4. 750. fresh sample may be drawn and tested.3. 13. 13 DIMENSIONS 11 HYDROSTATIC TEST 13. the batch is accepted.2 Critical dimensions for socket and spigot of pipes for push-on flexible joints and mechanical joints for classes K7.If sufficient evidence is available that the failure ofthe sample can be attributed to defect in test bar.IS 8329 .1 Length The standard working length of socket and spigot pipes shall be 4 m.5 m other lengths are available by agreement between the manufacturer and the purchaser. Class KIO. 1 600.2.400.05 (K)2 p = 0.2 2. 700.2 If test results do not satisfy the requirements of 10.6 PN16 Flange (6) 2.3.0 3.0 4. 1000. The pipes shall withstand the pressure test and shall not show any sign of leakage. 2V’O * Y 10.0 3.1 All pipes shall be tested hydrostatically at a pressure specified in Table 1. sweating or other defects of any kind. as given in the formula (1) in 4.5 m and 6 m and for flanged pipes shall be 4 m. 1 400. of pipes and flanges followed in this standard are as follows : 80.5 1.450. To perform the test. 125. Table 1 Hydrostatic of When used under the conditions for which they are designed. The different nominal wall thickness are given in Table 2.1. 6 . if not the manufacrurer has the option to proceedas in 10. 5 and 6. DN. K9 and KlO are given in Table 2. 900.1 It is recommended that the Hydrostatic test pressure at works ‘p’ be expressed in MPa as a function of the coefficient K (4.3 Wall Thickness The nominal wall thickness of pipes shall be calculated as a function of the nominal size.300. 1 800 and 2 000 mm.2 2.2 When pipes are required to be tested for higher pressure. 600. 4.5 Test Pressure at Works . 12 SIZES 12.I)* ~=0.3 Dimensions of flanged pipes centrifugally cast with screwed on flanges or welded flanges are given in Tables 3. ductile iron pipes and their joints shall not have detrimental effects on the properties of the water for its intended use. 500.250.0 4.6 1.6 1.8 (3) 4.1. 5.3. 1 200.5 1. 14 MATERIALS WATER IN CONTACT WITH POTABLE 11 .2 Internal Diameter 11.8 ! looto2ooo NOTE -~ Recommended I . NOTE -. 5 m.05(K-2)~ The nominal values of the internal diameters of centrifugally cast pipes. investigate the reason and ensure that all castings in the batch are either reheat treated or rejected.05 (K. 1 100. 100. 11.2 2. 13.6 the manufacturer shall: In the case where the metal doss not achieve the required mechanical properties.3) be calculated using the following formulae: for for for for DN DN DN DN 80 to 300 350 to 600 700 to 1 000 1 lOOto p = 0. 150.5 PN25 Flange (7) 3.1) Nominal Diameter (DA’) mm Minimum Hydrostatic Centrifugally cast pipes with flexible joints Class A7 Class KS Class K9.0 - (1) 80 to 300 350 to 600 7OG to 1 000 (2) 3.6 1.2 2.5 PN40 Flange (8) 4. welded-on flanges PNIO Flange (5) 1. 800. 5 m and 5.6 and 11.1 The standard nominal diameters DN. pressure shall be applied internally and shall be steadily maintained for a period of 10 s.2 Test shall be carried out before the application surface coating and lining. MPa Pipes with screwed 0. the test pressures are subject to agreement between the purchaser and the manufacturer at the time of enquiry and order. in permanent or in temporary contact with water intended for human consumption.5 2.200.2 3.5 2.2 hydrostatic site test pressure and hydraulic working pressure are given in Annex E.05 (K + 1)2 p = 0. Class K12 (4) 5. 12.2 3. expressed in millimetres are approximately equal to the numbers indicating their nominal sizes DN. If It passes.1. 12. 11.5 2. Other thickness and class are possible for pipes by agreement between the manufacturer and the purchaser. K8.350. 0 9.5 KIO 6.0 8.0 9.0 12.0 12.0 15.8 7.0 21.5 13.0 23.3 6.2 12.0 7.1 18.6 7.2 7.7 22.9 20.3 11.3 6.0 9.4 15.0 14.4 15.0 7.1s 8329 : 2000 Table 2 Dimensions of Sockets and Spigot Pipes. Nominal Diameter DN 80 100 125 150 200 250 300 350 400 450 500 600 700 750 800 900 1000 1 100 I 200 External Diameter DE 98 118 144 170 222 274 326 378 429 480 532 635 738 790 842 945 1 048 1 152 r K-7 5 5 5 5 5 5.0 17.3 17. DE All dimensions in millimetres.5 10.3 and 15.7 9.1 18.5 K9 6.0 8.6 10.0 10.0 16.0 11.5 7.3 17.0 6.8 9.2 7.1 18.0 6.0 6.0 6.8 11.1 6.2 12.4 11.4 6.9 20.3 5.4 15.4 11.9 10.3 17.0 14.2. K9 and X10 (Clauses 3.2) a.0 I 400 I 600 I 800 2 000 NOTE For tolerances refer to 15.7 22.5 9. KS.7 12.0 6.7 10.21.0 19.5 8.3 6. I 255 I 462 1668 I 875 2 082 .7 8.7 22.0 25.6 9.6 13.1 8. 12.6 6.0 14.9 20. 13.5 14.8 7.6 8.0 6. Classes K7.3.5 Barrel Wall Thickness ‘0’ c K8 6 6 6 6 6 6 6. 5 25. All dimensions in millimetres.8 and 12.2. 4 Unless otherwise specified.IS 8329 : 2000 Table 3 Dimenshs of Standard Flange Drilling for Screwed Flanges and Welded Flange (PA’ 10) (Clauses 6.5 28 30 31. 3 Dimensions ‘a’ and’S. 2 325 E 132 156 184 211 266 319 370 429 480 530 582 682 794 857 901 1001 I II2 1231 I 328 I 530 I 750 I 950 2150 C Dimensions b I9 19 I9 I9 20 / 3 3 3 3 3 3 4 4 4 4 4 5 5 5 5 5 5‘ 5 5 5 5 5 5 a 32 32 32 32 34 48 52 52 60 63 68 75 82 87 90 98 I05 II4 120 123 132 I41 I50 S I5 15 I5 I5 I5 I6 17.5 20 21 24 24 2-t 24.M24 M24 M24 M27 M27 M27 M30 M30 M33 h433 M36 M39 M45 M45 M45 I 22 I 24.5 24.3). 2 Ifso required the screwed flanges may be spot welded on the back side after screwing.5 40 43 45 46 49 52 55 t The method ofscrewing and the exact form of thread shall be left to the discretion ofthe manufacturer aRer screwing on the barrels oftbe pipes.5 24.5 30 32.5 19.are for guidance only.5 26. Nominal Diameter DN 80 100 I25 I50 200 250 300 350 400 450 500 600 700 750 800 900 I 000 I 100 I 200 I 400 I 600 I 800 2000 NOTES D 200 220 250 285 340 395 445 505 565 615 670 780 895 960” 1015 I II5 I 230 I 340 I 455 I 675 I915 2 115.5 32 34.5 Number 4 8 8 ‘8 8 12 I2 I6 16 20 20 20 24 24 24 28 28 28 32 36 40 44 48 Holes Dia (d) I9 19 I9 23 23 23 23 23 28 28 28 3’1 31 31 34 34 37 37 40 43 49 49 49 Bolt Slu MCbiC 160 180 210 240 295 350 400 460 515 565 620 725 840 900 950 I 050 I 160 1270 I 380 I 590 I 820 2 020 2 230 Ml6 Ml6 Ml6 M20 M20 M20 M20 M20 . iron. flanges shall be ofductile as the flanges are never removed .5 34 35 37.5 19.5 36.5 38.5 26. .184 211 266 31..5 41 43 46 50 53.5 36 39. ai 40 43 43 49 49 56 MChiC NUmba 8 8 8 ‘8 12 12 12 16 16 20 20 20 24 24 24 28 28 32 32 36 40 44 Ml6 Ml6 Ml6 M20 M20 fW M24 M24 . 2 If so required the screwed flanges may be spot welded on the back side after screwing.t 1200 1400 I600 1800 2 000 NOTES 19 19 19 19 20 22 24. 9 . -I. flanges shall be ofductile iron.2. 285 340 400 455 520 580 640 715 840 _ 910 970 1 025 1 125 1 255 I 355 1485 1685 I 930 2 130 2 345 c 160 180 210 240 295 355 410 470 525 585 650 770 840 900 950 I OS& 1 170 I 270 I 390 1 590 1620 2 020 2 230 b ‘T3 3 33 3 4 4 4 4 4 5 5 5 5 5 5 5 5 5 5 5 -5 a 80 100 125 150 200 250 300 350 400 450 500 600 700 750 800 900 .5 ‘19.5 28 30 31.3) d Nominal Diameter DN r D Dimensions & 132 156’ .5 28 30 32.5 24 25 27. -MS6 48 1 The method of screwing and the exact form of thread .5 35 37.5 40 42 45.h436 M39 !z h&s -f&32 -M52. 3 Dimensions ‘0’ and’s’ are for guidance only.9 370 429 480.32 32 32 32 34 48 52’ 68 72 78 82 93 103 108 114 124 135 144 156 165 180 195 210 s I5 15 15 15 16 17.5 57 60 65 70 75.Table 4 Dimen$ions of Standard Flange Drilltag for Screwed Flanges and Welded Flange ~(PN16) (Clauses 6.5 49 52. M33 M33 M36 .shrdlbe IeDto the discretion of the manufrctunrW the flanges * ~nmdved after screwing on the barrels ofthe pipes. 548 609 720 794 857 901 1001 1112 1218 1328 1 530 1 750 1 950 2 150 200 220 250.M27 Mz? g.5 26.5 27. 4 Unless otherwise specifkd.5 r L J Dia (d) 19 19 19 23 23 28 :: 31 31 34 37 :a.8 and 12.5 21 22. Slxe Numba 8 8 8 8 12 12 16 16 16 20 20 20 24 24 24 28 28 32 32 36 40 44 48 Dia (d) 19 23 28 ‘28 28 31 31 34 37 37 37 40 43 43 49 49 56 56 56 62 62 70 70 Metric Ml6 Ii420 80 100 125 150 200 250 300 350 400 450 500 600 700 750 800 900 1000 I loo I 200 1400 1600 I 800 2 000 NOTES 200 235 270 300 360 425 485 555 620 670 730 845 960 -I 020 I 085 I 185 I 320 1420 1 530 1755 1975 2 195 2.5 66. 3 Dimensions ‘a’ and~=r’ for guidance only. 10 .neverremoved after screwing on the barrels of the pipes.5 50 ::5 60‘ 65. M24 M24 M24 M27 M27 M30 M33 M33 M33 M36 M39 M39 M45 M45 MS2 M52 MS2 M56 MS6 M64 M64 I The method of screwing and the exact form of thread shall be left to the discretion of the manufacturer as the flanges are.5 22 24 25. 2 If so required the screwed flanges may be spot welded on the back side after screwing.5 34 35. Nominal.5 52 ” 56.5 36. are 4 Unless otherwise specified.5 33.5 39 42 45 48.2.425 132 156 184 211 274 330 389 448 503 548 609 720 820 883 928 I 028 I 140 I 240 I 350 1560 1730 I 980 2 210 160 190 220 250 310 370 430 490 550 600 660 770 875 940 990 1090 1210 1310 1420 1640 1860 ‘2070 2300 19 19 :‘o 22 24.84 100 102 112 118 120 138 148 162 176 190 15 is IS 16 17.5 61. Dimensions D E ’ c b f a s HOkS Bolt Diameter DN.5 42 46.5 19.5 . 30 33 37 40 44 49 56 57 64 69 73 83 -.1 27.3) All dimensions in millimetms.5 29 33.5 69 74 81 88 95 3 3 3 3 3 3 4 4 4 4 4 5 5 5 5 5 5 5 5 5 5 5 5.Ihzd12. flanges shall be of ductile iron.5 30 32 34.IS 8329 : 2000 Table 5 Dimensioni of Standard FlangeDrilling for Screwed Flanges’and Welded Flange (PN 25) (Clhuses 6.3 27. 4 Unless otherwise specified.Diameter DN 80 100 125 150 200 250 300 350 400 450 400 / D E T c 160 190 220 250 320 385 450 510 585 610 670 795’ b I9 I9 23..5 40.5 35 36. Nominal . 39. 11 . 106 NOTES 1 The method of screwing and the exact fo? of thread shall be left to the discretion of the manufacturer as the flanges are never removed after screwing on the barrels of the pipes. 3 Dimensions ‘a’ and?&re forguidance only. flanges shall be ofductile iron.5 Number 8 8 8 8 12 12 1~6 I6 16 20 20 20 Metric Ml6 M20 M24 hG?4 M27 M30 M30 M33 M36 M36 M39 M45 600 200 235 270 300 375 450 515 580 660 685 755 890 132 156 184 211 284 345 409 465 535 560 615 735 43 48 51 52 62 67 73 76 83 z.2. 2 Ifso required the screwed flanges may be spot welded on the back side’after screwing.5 31 33.8 and 12.5 26 30 34.3) All dimensions in millimetres.5 44 48 50 52 58 HOkS Bolt Dia (d) I9 23 28 28 31 34 34 37 40 40 43 49 size -f 3 3 3 3 3 3 4 4 4 4 4 5 a S I5 15 16.Table 6 Dimensions of Standard Flange Drilling for Screwed Flanges and Welded Flange (PN 40) (Clauses 6.5 18 21 24 27. (1.0 4.3.3 Tolerance on Ovality 15. -6.1 +1. 15.8 +A.-6 +1.1) Nominal Diameter Allowable Difference Between Minor Axlb and DE.-7 +1.1. Kt? and Kl2 given in 4.6 +I. -3 +1.-2.75 2. The tolerance for out-ofroundness of the socket and spigot ends in the jointing zone for push-on-joint is given in Table 8 and for mechanical joint is given in Table 9. Such pipes so specially supplied may be cut and used as short length pipes.5 4.0 2.1 External Diameter The values of the external diameter (DE) of the spigot end of socket and spigot pipes and when measured circumfetentialiy using a diameter tape shall confirm to the requirements specified in 12. -3.1 Above size DN 300 subject to the agreement between the purchaser and the manufacturer some of the pipes may be ordered in accordance with 15.-2.5 +I. in their catalogue. 15.22) of the spigot end of pipes shall: remain within the tolerances DN 80 to 200.4 +1. i) Wall thickness (e) ii) Flange thickness (b) . certain types of flexible joints can accept the maximum ovality without need tbr spigot re-rounding prior to jointing. The positive tolerance is + 1 mm and applies to all thickness classes of pipes.1. These pipes may be especially marked by a continuous longitudinal line. comes within the minimum allowable dimensions of DE (Table 2) after applying the tolerance.4 Tolerance on Thickness Thk tolerance on the wall thickness (e) and the flange thickness (6) of the pipes shall be as follows: Dimensions.-2.0 1.-4.8 +1.-3.3 +1.1.2 Up to size DN 300 the external diameter of the barrel of pipes supplied shall be within the tolerance specified.-2.3 + 0. Such tolerance should be specified by the -manufacturer for the type ofjoint and the nominal size considered. The negative tolerance of the external diameter depends on the design of each type of joint and maximum negative tolerance is specified in this standard.IS8329:2000 15 TOLERANCES 15.2 +1. Table 7 External Diameter DE (mm) (Clause 15.4 3. the minor axis is permitted to be less than the minimum allowable diameter by the value given below provided the mean diameter DE measured by circumferential tape.8 +1. the ovality (see 3.05b) NOTE -The manufacturer’s guidance will be followed as to the necessity and means of ovality correction.-7.4 +1. I) The tolerance given is subject to minimum thickness against classes KI.-I +1. 12 .-g 15.-s +1.-3.2 +I.3. -3.6 +1.2.3.1.3. 15. if required.5 +I. -4. Min mm (2) 1000 I 100 I 200 I 400 1 500 I 600 I 800 2 000 DN mm (1) 1462 1 565 1 668 I 875 2 082 15. 15.9 +1.8 +1.2 In case of oval spigot ends for push-onjoints (DE).3 Mechanical joint will accept some degrees of spigot ovality but the measured difference between the maximum and minimum axis of individual spigots shall not exceed the values given in Table 9. Push-on flexible joints may need closer tolerance for its effective performance.5 15.1) DN (1) 80 100 125 150 200 250 300 350 400 450 500 600 700 750 800 900 Nominal (2) 98 118 144 170 222 274 326 378 429 480 532 635 738 789 842 945 k 048 1 152 1255 Tolerance (3) +1. -3.4 +I.-4. -4.2 For requirement of interchangeability all pipes should be within the tolerance specified.2.3 In addition. Table 8 Allowable Ova&y for Push-on-Joint Pipes (Clause 153.1 Pipes shall be as far as possible circular internally and externally.001 DN)‘) i-(2 + 0. 80 to 300 350 to 600 700 750 to 800 900 to 1 000 1100to1200 1 400 to 1 600 I.1 Diameter 15.3 +1. Tolerancepm on DE for not exceed I percent for DN 250 to DN 600 or 2 percent for DN above 600.-8. 15.-3.-6. No limit for the plus tokrance is specified.2 +1. starting from spigot end of pipe to the section at one metre from it so that the pipe can be cut and the short length can be used. 5.-6 f 6. any one ofthe following protection may be applied depending upon the external condition of use: ‘Metallic zinc with finishing layer as included in Annex A. separated by distance approximately two-thirds the length of the pipe to be checked.3.1 Tolerances for the various dimensions of flanges shall be as given in Tables 10. for encasement of the pipes at site.25xL where Nominal Diameter DN mm (1) Maximum Ovality of Spigot of External Diameter DE mm (2) fm = maximum deviation from straight line. -2.1 The polyethylene sleeves may be supplied.0 1600 1800 +12. Bituminous paint: as included in Annex C. 1. A f 5.2 000 15. -4 as.1 Pipes shall be normally delivered internally and externally coated.5.5.5.5 DN 800 + 7.5 5 IO 20 30 40 50 60 Tolerance on Length The tolerance on length of pipes shall be as follows: Type of Casting Tolerance mm i) Socket and spigot and plain ended pipes ii) Flanged pipes f 100 f 10 15. External Sleeving (Annex D).5 1200 1400 +10. -5 f 6. NOTE -Unless and until agreed to between the purchaserand manufacturerthe requirement of coatings and sleeving shall comply with the rcquinments contained in this standard.5 l4 I25 150 1 200 1 250 +5. 16. thus: f.5. the maximum deviation from a straight line in mm shall not be greater than 1. 1 0.5 l 4.5 900 1000 1100 + 8.5.3) length L. <1.6 Permissible Deviation from a Straight Line The pipes shall be reasonably straight.5 300 350 1 400 1 450 1 500 1 600 + 6.5. 11.1) DN 80 100 f 4. along with the pipes if ordered by the purchaser at the time of enquiry and order. and L = length of the pipe. When the pipe is rolled along gantries. 15. in metres of the pipe. -4 f 5.5 *5 700 750 Tolerance on D Tolerance on E + 7.0 2000 Tolerance on D Tolerance on E 13 .1 Of the total number of socket and spigot pipes to be supplied in each diameter. the manufacturer may supply up to 10 percent in length shorter than the specified length as follows: Specified Length Decrease in Length m i) Up to 4 ii) Over 4 m 0. 16 COATING 16. This encasement shall so designed that prevent contact between pipe and the surrounding backfill and bedding material.2 External Protection By agreement between manufacturer and the purchaser.2.7. 12 and 13.5.5. Details as given in Annex D.25 times the 16. 16. -3. 1. 2 15. 80to 150 200 to 350 400 to 500 600 to 800 900 to I 000 I loot0 1400 I 600 to . Zinc rich paint with finishing layer.IS 8329 : 2000 Table 9 Allowable Ovality for Mechanical Joint Pipe (Clauses 15. as included in Annex A.1 and 15.3.7. the following lining may be applied depending on the internal conditions of use: Table 10 Tolerances on-the External Diameter ‘D and E’ (Clause 15.3 Internal Linings By agreement between manufacturer and the purchaser.7 Flanges 15. 8 zk4. The details of conditions under which licence for the use . NOTE Manufacturers may recommend that spigot end ofsuch pipes be jointed with the major~axis in the vertical position. Where applicable. 18. c) Class reference.1) All dimensions in millimetres. Bituminous paint as included in Annex C.5. Blast furnace slag cement mortar as included in Annex B. d ~Pitch circte diameter. -3.+.1 Marking may be Done a) Dimension Bolt Hole Diameter.05 b) Table 13 Tolerances on Flange Drilling (Clause 15. and on the outside of the socket or on the barrel of pipe centrifugally cast in sand mould.05 fr) * (2 + 0.0 18.1) All dimensions in millimetres. Unless and until agreed to between the purchaser and in this standard by controlling the manufacturing process and by carrying out the various tests as specified in this standard. statistical sampling techniques should be used to control the process so that the product is produced within the specified limits. 17 QUALITY ASSURANCE 17. Marking 18. as included in Annex B.1 Each pipe shall have as cast or stamped or legibly and indelibly painted on it with the following appropriate marks: a) Indication of the source of manufacture.-o f 2 31 to56 (3) +3.7. b) The nominal diameter. 4 The non-standard length of the pipe if specially ordered.8 (2) +2. The manufacturer shall control the quality of the product during their manufacturing process by a system of process control in order to comply with the technical requirements contained in this standard.0 +2.2 INS Certification The pipes may also be marked with the Standard Mark.1. 1986 and the Rules and Regulations made thereunder. Height of Raised Face v) (I) 3 4 5 Tolerance (2) +I 5. on Flange (b) Type of Flange (1) Integrally cast flanges Welded and screwed on flanges Tolerance (2) f (3 + 0. to indicate the major axis of the spigot. Cement mortar with seal-coat: as included in Annex B.0 f 4.of Standard Mark may be granted to the manufacturers or producer may be obtained from the Bureau of Indian Standards. 17. C Centre to centre of adjacent bolt holes *2 f 2. the requirement of internal lining shall comply with the requirements contained in this standard. Wherever possible.8 b) on the socket faces ofpipe centrifugally cast in metal mould. 18 MARKING Table 11 Tolerances on Raised Face Height v) (Clause 15. Table 12 Tolerances on Thickness (Clause 15. d) The last two digits of the year of manufacture.1 The use of Standard Mark is governed by the provisions of Bureau of Indian Standards Act.7.1) All dimensions in millimetres.2. .1 General The manufacturer shall be able to demonstrate the conformity of the product to the requirement contained 14 .IS 8329 : 2000 - - Portland cement (with or without additives) mortar.2 Quality Assurance System NOTE - the manufacturer. Tolerance --19to28 (1) Bolt hole diameter.-o * 2.7.0 +2. an indication of length over which the pipe is suitable for cutting on site. -2. High alumina (calcium aluminate) cement mortar as included in Annex B. 18. and A short white line at the spigot end of each pipe with push-on joint in sizes DN 700 and above.8 Above 62 (4) +-4. A-6 DETERMINATION OF ZINC COATING c) A-8 FINISHING LAYER After metallic zinc coating or zinc rich paint coating the pipe shall be given a finishing layer of bituminous paint or synthetic resin compatible with the zinc coating. A-7 REPAIRS OF THE ZINC COATING Areas left uncoated. is calculated by mass difference of the token before and after zinc coating from the following formula: M = where M. The mean dry film thickness of the finishing layer shall not be less than 70 pm with nowhere less than 50 pm. it may applied on a blast grams per square metre. by application of zinc rich paint containing more than 90 percent zinc by mass in the dried film: mean mass of the applied paint shall not be less than 150 g/m*. IV. The value of C shall be determined by the manufacturer and specified when required in test documents. or 500 mm x 50 mm. = mass in grams before and after zinc coating measured to an accuracy of 0. The zinc rich paint coating shall be applied by a spraying or a brush process onto the pipe surface in case of repair only.x 100 mm.. After coating and trimming the minimum token sizes shall be either: a) b) 250 mm. A-5 ZINC COATING MASS The average mass of zinc coating shall be not less than 130 g/m* with a local minimum of 110 g/m*. A-4.2) ZINC COATING A-l PIPE SURFACE CONDITION The pipe surface shall be dry and free from rust or any non-adhering particles or foreign matter such as oil or grease. for . C(M. The average mass of zinc coating M expressed in 15 .-M. applied on the pipe with oxide option. at the manufacturer’s cleaned pipe surface. Metallic zinc shall be applied on to the oxide external surface of the pipe. Flanges of welded flanged pipes and welded parts of the flanges shall be coated with zinc rich paints (90 percent). and = correction factor depending on the C material of the token taking into account difference in surface roughness between the token and the pipe surface. A-4 COATING CHARACTERISTICS A-4. A-3 METHOD OF APPLICATION The metallic zinc coating shall be applied by a spraying process in which metallic zinc material is heated to a molten state and projected in small droplets by spray guns onto surface.1 The metallic zinc coating shall cover the outside diameter of the pipe and shall be free from such defects as bare patches or lack of adhesion.example under the test token and coating damaged in excess of 5 cm2/m2of coating shall be repaired by either: a) b) a metallic zinc spray. Manufacturing process control system shall specify the frequency of this test. A rectangular token is attached along the pipe axis before passing it through the zinc coating equipment. NOTE --~~ The zinc is normally skin but. A = area of the token in square meter. It shall uniformly cover the zinc coating and be free from bare patches or lack of adhesion.1 g.) A A-2 MATERIALS The coating materials are metallic zinc with content of at least 99 percent by mass. Application of this finishing layer may be done by any proven process such as spraying or brush coating at the manufacturer’s choice.2 Damaged areas of zinc coating caused by handling are acceptable provided that the damage is less than 5 cm2/m2of coated surface and provided that the minor dimensions of the damaged area do not exceed 5 mm.IS 8329 : 2000 ANNEX A (Clause 16. may be used.3 Water The water used for the preparation of the mortar shall not contain substances deleterious to the mortar nor to the water it is eventually intended to transport in the pipe. loose scale or any other material B-l.3) CEMENT MORTAR LINING B-l MATERIALS B-l. Normal recommendations are: a) Portland cement (as per IS 8 112 or IS 455) mortar lining perform rather well and have an expected life of approximately 50 years in soft water with moderate amount of aggressive CO. The presence of solid mineral particles is. The mortar shall be thoroughly mixed and shall have a consistency which results in a dense and homogeneous lining.4 Mortar The mortar of the lining shall be composed of cement. ordinary Portland cement should be replaced by sulphate resisting Portland cement (as per IS 12330 or IS 6909). hard.1. The fraction comprising grains up to a maximum diameter equal to one-third of the normal thickness of the mortar lining shall not be less than 50 percent by mass.1) Water Characteristics Portland Cement Sulphate Resisting Cements (Including Blast-Furnace Slag Cements) (3) 5. strong and Table 14 Recommended Type of Cement Used for Lining (Clause B. The coarsest fraction (comprising particles which do not pass through a sieve of the aperture size closest to half the normal thickness of the mortar lining) shall not exceed 5 percent by mass. B-l. Longer service life can be obtained by increasing the mortar lining thickness.IS 8329 : 2000 ANNEX B (Clause 16. The fine fraction comprising particles passing through a sieve of aperture size 0.5 15 3 000 500 30 High Alumina Cement (I) i) ii) Minimum value ofpH Maximum content (mg/l) of: Aggressive CO. The mortar shall contain by mass at least one part of cement to 3. For sea water transmission blast furnace slag cement which has C. and whenpH is within 6 to 9.5 parts of sand. the same as blast furnace slag cement which naturally possess a good resistance to sulphate attack. it shall be clean and shall be composed of inert. Sulphates (SO. stable granular particles. provided that they do not prejudice the quality of the coating and that of the transported water. d) The recommended type of cement used for lining are as given in Table 14. however. 125 mm shall not be more than 10 percent by mass. c) High alumina cement’ (as per IS 6452) mortar lining is suitable for continuous use ofpH between 4 and 12 and no severe damage occur after occasional exposure to pH 3 to 4 and 12 to 13.2 Sand The sand used shall have a controlled granulometric distribution from fine to coarser elements. sand and water. A content below 3 percent can be used. Additives.1 Cement The cement used for the lining shall conform to the existing standards on cement. B-l. admissible provided that these requirements are still fulfilled. which shall be specified.) Magnesium (Mg”) Ammonium (NHI*) (2) 6 7 400 100 30 (4) 4 No limit No limit No limit No limit 16 . The type of cement to be used is to be mutually decided between the purchaser and manufacturer. The sulphate concentration limit for suiphate resisting Portland cement is approximately 3 000 mg/litre. b) Where cement mortar lining may be exposed to sulphate attack. B-2 CONDITION OFTHE INTJZRIOR SURFACEOF THEPIPEBEFOREAPPLICATIONOFTHELINING All foreign bodies. B-6 DETERMINATION OF LINING THICKNESS On contraction of the lining. or on the hardened mortar by means~of a non-destructive method of measurement. are acceptable up to awidth given-in the above. For the repair operation. Thickness The cement mortar lining at works is applied by a centrifugal spinning processor a centrifuged sprinkler or a combination of both methods.Fitting ends may have a chamfer of maximum length 50 mm. the lining may be reduced to values below the minimum thickness.5 350 to 600 5. B-3 APPLICATION OF THE LINING DN The lining shall be such that it cannot be dislodged with pressure of hand and shall be free from corrugations or ridges that could reduce the thickness of the lining to less than the minimum value at one point.0 187. When the pipes are to be used for conveying potable water the inside coating . Apart from the inner surface of the joint. a trowel with fresh mortar so that a continuous lining having a constant thickness is again obtained. 17 The thickness of the lining is checked on the freshly centrifuged mortar by the insertion of a steel pin. B-4 REPAIR OF LINING Repairs to damaged or defective areas are allowable. The damaged mortar shall first be removed from these areas. if necessary. shall be less than 50 mm. the mortar shall have a suitable consistency.For other DIVthe minimum bore should not be less than I5 mm from nominal dia.5 l/2 I 400 to 2 000 9. the lining shall be cured at temperatures greater than 4°C.shall not contain any constituent soluble in such water or any ingredient which could impart any taste or whatsoever to the potable water after sterilization and suitable washing of the mains.0 NOTE . tagether with other isolated cracks which may result from manufacture or may develop during transportation. The purpose of seal-coat is to minimize lime leaching of the cement mortar as well as to restrict the unwanted rise in pH value of the transmitted water.0 87. Maximum Crack I Width I Radial Nominal Value Tolerance Displacement (2) (3) (4) (1) 018 80 to 300 3.IS 8329 : 2000 which could be detrimental to goodcontract between the metal and the lining shall be removed from the surface to which the lining is to be applied. Only isolated grains of sand are allowed to appear on the surface of the lining. The length of the chamfer shail be as small as possible but. .0 137.0 -2. B-5 THICKNESS OF THE LINING Table 16 Minimum Bore Clearance Cement Mortar Lining of Ductile Iron Pipe (Clause B-7) DN (1) 80 100 I50 200 250 300 Minimum Bore of Cement Mortar Lined Pipe (mm) (2) 67. These cracks. B-7 SURFACE CONDITION HARDENED LINING OF THE The surface of the cement mortar lining shall be uniformly smooth.0 287.0 237. Table 15 Thickness of the Lining (Clause B-5) All dimensions in millimetres. additives may be included to obtain good adhesion against the side of the existing undamaged mortar.0 -2 l/O 700 to I 200 6.0 -3 l/5 NOTE . but they shall be agreed on at the time of purchase and shall be specified on the purchase order. At the pipe ends. The normal thickness of the lining and the minimum permissible mean and local values are given in the Table 15.1 General When specified the cement lining shall be given a sealcoat of bituminous material or any other epoxy based material compatible with cement mortar lining. Then the defective part shall be repaired by using. The inner surface of pipe shall also be free of any metal projections likely to protrude beyond 50 percent the thickness of the lining. Once centrifuging is finished. the formation of cracks cannot be avoided. The thickness of the lining shall be measured at both ends of the pipe in at least one section perpendicular to the pipe~axis. for example. Other seal-coat materials may be used. Any loss of water from the mortar by evaporation shall be sufficiently slow so that hardening is not impeded. the parts of the pipe coming into contact with the transported water shall be entirely covered with mortar. in any case. as specified in the Table 16. B-8 SEAL-COAT B-8.0 -1. 1 Characteristics SLEEVING Table 17 Layflat Width of Tubular Polyethylene Film for Various Sizes of Iron Pipe (Clause D-2.IS 8329 : 2000 ANNEX C (Clause 16.2 Additives and Impurities is required. coatings are either hot applied or cold C-2 GENERAL CHARACTERISTICS C-2. dry and free from rust.1) Nominal lnternal Diameter of Pipe in mm 80 For Use with Pipeline Incorporating Flexible Joints 350 350 450 550 650 700 800 The material used for making the film is polyethylene or a mixture of polyethylenes and/or ethylene and olefin copolymers. D-2. the coating shall be removed and the pipes/flanges recoated.5 Pipes with or without sockets and flanges which are imperfectly coated or where the coating does not set or conform to the required quality.4 When the pipes are to be used for conveying potable water the inside coating shall not contain any constituent soluble in such water or any ingredient which could impart any taste or whatsoever to the potable water after sterilization and suitable washing of the mains. C-2. C-2. The coating material shall set rapidly with good adherence and shall not scale off. ANNEX D (Clause 16. C-2.1 Width I 100 1 100 1 350 I 350 I 750 I 750 I 750 2 000 2 000 2 500 2 500 2 750 2 750 3 100 3 600 4000 The nominal flat width of the tube or flat or flat sheet is specified in Table 17. 18 . D-l. the addition of an is used for this range of 2 to 3 100 150 200 250 300 350 400 450 500 600 700 750 800 900 I 000 I 100 I 200 I 400 I 500 1600 I 800 2 000 If protection against ultra-violet rays material shall be stabilized by the appropriate product: if carbon black purpose the addition shall be in the percent by mass.2 Thickness The nominal thickness of the sleeving shall be not less than 200 pm and not more than 25Opm unless otherwise agreed.3 Where the coating material has a bitumen base.2.5 percent. C-2.1 Coating shall not be applied to any pipe unless its surfaces are clean. purchaser and externally and (Bituminous applied. NOTE . all pipes shall be coated internally with the same material.2 Unless otherwise agreed between the purchaser and the manufacturer all pipes shall be coated externally and internally with the same material.2) BITUMINOUS C-l GENERAL Unless otherwise agreed between the manufacturer.1) POLYETHYLENE D-l MATERIAL D-l. The method of coating shall be as per usual practice of the manufacturer. D-2 DIMENSION D-2. The mean thickness of the coating shall be not less than 70 ym and the local.Actual layflat width of the tubular film shall not differ from the nominal by more than f 2.) COATING Minimum thickness shall be not less than 50 l_tm. Its density shall be between 910 and 930 kg/m3. it shall be smooth and tenacious and hard enough not to flow when exposed to a temperature of 65°C but not so brittle at a temperature of 0°C as to chip off when scribed with a penknife. 1 3. The dielectric strength of the film should be 3 1.1 4.2 3.7 2. If necessary.1 4.3 3.3 5.d4.3 MPa.4 6.6 MPa 6.3 4.5 Allowable Site Test Pressure (STP) E-l Suggested maximum hydrostatic site test pressure and maximum hydraulic working pressure (exclusive DN K9 Allowable Operating Pressure (Excluding Surge) AOP Allowable Maximum Operating Pressure (including Surge) MOP MPa 7.8 4.6 3.9 2.IS 8329 : 2000 The negative tolerance on the nominal thickness shall not exceed 10 percent.6 4.9 3.8 5.8 2.6 9.2 3.4 6.1 (mm) MPa 80 100 125 150 200 250 300 350 400 450 500 600 700 750 800 900 6.3 3.0 3.6 9.6 7.7 2.0 6.2 3.8 4.8 4.1 4.6 9.6 3.7 1.4 3.8 3.9 4.8 4.4 6.1 3.8 3.5 4.2 6.6 3.6 6.3 6. D-3 MECHANICAL PROPERTIES D-4 ELONGATION The elongation at fracture of the film in the longitudinal and transverse directions shall be not less than 300 percent.3 5.9 4.6 9.7 3.0 3.7 3.9 1.6 2.7 3.4 6.6 5.3 4.6 4.2 4.6 3.6 7.2 3.3 4.0 2.1 3.0 19 .4 4.2 4.5 3.4 5.4 3.2 3.3 4.7 7.5 3.6 4.3 4.2 5.1 4.1 5.1 3.4 6.9 5.8 3.4 6.7 7.1 3.4 4.2 4.7 3.2 4.4 4.1 4.6 3.9 3.7 6.9 5.6 9.4 5.7 7.9 4.6 5.6 4.4 6.8 3.9 MPa 9.7 7.6 3.0 3.1 4.6 3.8 3.5 4.5 V/pm minimum.6 9.8 2. D-5 DIELECTRIC STRENGTH Tensile strength of the film in the longitudinal and transverse direction shall be not less than 8.6 MPa 9.1 7.4 3.7 1.7 7.8 7.4 6.8 3.8 5.3 4.1 3.4 6.4 5.1 3.5 5.1 I 000 I 100 1200 I400 1 500 I 600 1800 2 000 1 .1 5.7 7.4 6.0 3.0 2.7 4.9 5.4 5.4 4. ANNEX E (Table 1) HYDROSTATIC SITE TEST PRESSURES AND HYDRAULIC WORKING PRESSURE of surge and inclusive of surge) may be followed as under: KIO Allowable Site Test Pressure (STP) Allowable Operating Pressure (Excluding Surge) AOP Allowable Maximum Operating Pressure (Including Surge) MOP MPa 7. it is permitted to use thicker sleeving or double sleeving.6 9. accessories applications and their joints for sewerage Ductile iron pipes. the. . The number of significant places retained in the rounded off value should be the same as that of the specified value in this standard. fittings.(Continuedfrom second cover) ISO/DIS 10803 : 1997(E) ISO/DIS 10804:Part-l/l994 EN 545 : 1994 EN 598 : 1995 EN 969 : 1996 Design method for ductile iron pipes Restrained joint system for ductile iron pipelines: Part 1 Design rule and type testing Ductile iron pipes. fittings. Ductile iron pipes. accessories and their joints for gas pipeline For the purpose of deciding whether a particular requirement of this standard is complied with. fittings accessories and their joints for water pipelines. expressing the result of a test. observed or calculated. final value. shall be rounded off in accordance with IS 2 : 1960 ‘Rules for rounding~off numerical values (revised)‘. Scheme VII M. BANGALORE. No part of these publications may be reproduced in any form without the prior permission in writing of BIS. Road. BHOPAL. I. CHANDIGARH 160 022 : C. I. GUWAHATI. THIRUVANANTHAPURAM. such as symbols and sizes. KANPUR. 323 33 75.832 78 58 { 832 78 91. This does not preclude the free use. Enquiries relating to copyright be addressed to the Director (Publications). Marol. Users of Indian Standards should ascertain that they are in possession of the latest amendments or edition by referring to the latest issue of ‘BIS Catalogue’ and ‘Standards: Monthly Additions’. New Delhi . MTD 6 (4227). LUCKNOW. if the review indicates that changes are needed. COIMBATORE.337 91 20 { 60 38 43 60 20 25 { 235 02 16. BHUBANESHWAR. PATNA. of necessary details. P. T. New Delhi 110 002 Telephones : 323 01 3 I. 1986 to promote harmonious development of the activities of standardization. 9 Bahadur Shah Zafar Marg. Review of Indian Standards Amendments are issued to standards as the need arises on the basis of comments. HYDERABAD. 1. Kankurgachi CALCUTTA 700 054 : SC0 335-336. BIS. Copyright BlS has the copyright of all its publications. Amendments Issued Since Publication Amend No. This lndian Standard has been developed from Dot : No. E9 MIDC.Bureau of Indian Standards BIS is a statutory institution established under the Bureau of Indian Standards Act. RAJKOT. Campus. 9 Bahadur Shah Zafar Marg Telegrams : Manaksanstha (Common to all offices) Telephone 323 76 17 323 38 41 337 84 99.235 04 42 235 15 19. Date of Issue Text Affected BUREAU OF INDIAN STANDARDS Headquarters : Manak Bhavan. a standard along with amendments is reaffirmed when such review indicates that no changes are needed. in the course of implementing the standard. PUNE. IV Cross Road.235 23 15 832 92 95. T. GHAZIABAD. Standards are also reviewed periodieally. JAIPUR. CHENNAI 600 113 : Manakalaya.323 94 02 Regional Offices : Central Eastern Northern Southern Western Branches : Manak Bhavan. Sector 34-A. NAGPUR. V. marking and quality certification of goods and attending to connected matters in the country. Printed at Dee Kay Printers. FARIDABAD.832 78 92 NEW DELHI 110 002 : l/l 4 C. it is taken up for revision. Andheri (East) MUMBAI 400 093 : AHMADABAD.337 85 61 337 86 26. type or grade designations. (Page 3. lines 14 and 15 ) — Substitute the following for the existing: ‘all the requirements of clauses 10 and 11. 1 SEPTEMBER 2001 IS 8329: 2000 CENT%JGALLY CAST (SPUN) DUCTILE IRON PRESSURE PIPES FOR WATER. clause 10.1.’ ( Page 4. IVole 2 ) — Substitute the following for the existing ‘2 For ductile iron pipes up (o DN 1 COO. clause 6. depending on site condition. clause 11.AMENDMENT NO.2 Test shall be carr@i out before the application of surface coating and lining except zinc coating.6.2.1.2) — Substitute the following for the existing clause ‘12.4) — Delete. clause 4. which may be applied before the hydrostatic test. clause 11.’ (Ppge 5.1. suitable flexible joint may be preferred where the joint is restrained against axial movement.1. clause 12.’ (Page 6.1. GAS AND SEWAGE — SPECIFICATION ( Third Revision) (Page 3.2 The critical external diameter of spigot of pipes for push-on flexible joint and mechanical joint for all classes are given in Table 2 for reasons of safety and interchangeability. the microstructure reveals 75 percent ferrite with if spheroidal grapfrite and percentage elongation higher than or equal to 7. line 1 ) — Insert ‘minimum’ before ‘Hydrostatic test’.’ ( Page 6.2) — Substitute the following for the existing clause: ‘6.’ 1 . it shall be taken as meeting the requirement of this standard when the tensile strength of the specimen is within the specified limit. (Page 6.2) — Substitute the following for the existing clause: ‘11.2 For high pressure mains where working pressure is substantial. clause 7. Tables 3.. 2 . (Page 13. for the plus tolerance is specified.5’ respectively.4 ) — Insert a new clause after 15.Amend No.1 Pipe wall thickness compliance shall be demonstrated by the manufacturer. (Page 12.’ (Page 13.1 Unless otherwise agreed betsveen the manufacturer and the purchaser. clause 16.001 DN)* *(2 + 0.1 ) — Substitute the following for the existing: ‘16.2 and 1. he may use combination of various means such as: — Direct wall thickness measuring or gauging by suitable requirements such as mechanical or ultrasonic equipment. Table 15.5 and 6 ) – Delete the existing column ‘a’. Dimension Tolero~ce.3 -(1. — The frequency of testing is related to the system of production and quality control used by manufacturer..4. 1. NO‘tit Wall thickness (e) up to 6 mm Wall thickness (e) above 6 mm 111 Flange thickness (b) Ine IoleraRWgiven is subj~t to ~i~mum thickness against all i ii) . clause 15. clause 16.’ (Page 12.4. CO14 ) — Substitute the following for the existing values: ‘0.2.8.0.4: ‘15.4 ) — Substitute the following for the existing The tolerance on wall thickness (e) and flange thickness (b) of the pipes shall be as follows: S1 No. clause 15. all pipes shall be delivered with an external bituminous coating in accordanrx with provisions of Annex C.1. 1 to IS 8329:2000 (Pages 8.3. Title ‘b’ of the column maybe read as ‘a’. mm -1.9. ( Page 17. line 8) — Delete the sentence ‘Bituminous paint: as included in Annex C’.The letter ‘b’ in the sketch may be omitted.3 + 0.10 and 11.05b) clgiven in 4. 1 3.4 3.5 1.6 2.1 4.8 0.3 3.6 3.7 7.7 4.25 1.6 40 4.4 6.0 2.5 3.5 1.0 2.4 5.0 7.9 2.7 7. Amex E) — Substitute the following for the existing ANNEX E ( Table 1 ) HYDROSTATIC SITE TEST PRESSURES AND HYDRAULIC WORKING PRESSURE Allowable Maximum Operating Pressure (including surge) MOP 1 ! I Allowable Site Test Pressure (STP) K71K8\K9 1’21 MPa KIO K7 KS MP K9 K1O 80 100 125 150 200 250 300 350 400 450 500 600 700 750 800 900 1000 1100 1200 1400 I 600 1800 2000 0.0 1.0 3.9 5.8 0.7 2.3 3. I 5.8 4.5 1.9 6.4 I.25 1.7 7.8 3.6 3.1 — 7.3 3.75 1.8 3.1 4.8 0.0 4.5 1.9 2x 2.6 ?.4 6.5 1.0 2.8 3.8 0.75 i .4 6.7 4.75 1.0 4.7 7.0 1.0 2.6 7.4 4.6 9.6 : 9.4 3.5 1.8 3.7 26 26 6.6 96 9.1 3. New Delhi.0 2.5 3.3 4.8 5.0 2.25 1.() 10 2.8 3.9 5.75 [.2 3.8 2.5 I.7 7.25 I.7 3.2 3.8 0.7 2.5 I.8 2.4 6.75 I.3 5.2 3.9 3.5 1.5 4.7 7.1 3.6 3.8 1.2 5.0 1.9 4.4 4.1 3.4 6.6 3.9 4.6 5.7 6.1 5.8 4.Amend No.4 3.7 3.5 3.7 7.6 3.4 6.5 I .8 4.8 37 3.1 3.75 1.25 1.7 7.8 5.8 0.6 3.8 2.6 9.25 1.8 3.1 3.2 4.9 3.5 3.6 6-I 64 6.25 1.5 4.6 9.2 3.5 I.4 4.1 4.75 1.8 7.3 5.6 4.6 9.3 3.0 i . Idla 3 .2 6.8 0.8 0.0 3.0 2.7 3.0 2.3 6.9 3.3 4.0 2. I 4.75 I.0 3.6 — 6.4 6.0 2.2 4.8 3.7 3.1 1 7.4 6.() I .1 3.75 1.2 3.2 4.7 1.5 1.0 2.9 2.8 5.4 6.8 0.() I .0 2.7 7.0 2.0 3.5 1.5 5.6 3.6 6.5 3.25 1.8 2.9 9.75 I.0 2.0 — (MTD6) Reprography Unih BIS.4 6.1 3.0 2.6 3.6 9.1 3.25 1.4 5.3 4.8 0.6 4.4 3.I 4.3 4.6 7.75 1.5 3.2 3.5 1.3 3.4 3.8 0.8 2.1 5.4 4.0 1.2 3.0 1.8 0.5 I .4 4.3 4.25 1.1 — 7.9 1.6 4.6 5.4 6. 1 to IS 8329:2000 (Page 19.25 1.25 1.7 7.7 7.6 2.4 5.75 1.6 9.25 1.75 2.9 4.() 10 Lo Io 10 1.0 2.75 1.0 2.6 2.7 7.6 4.25 1.9 4.6 9.6 1 ?.8 0.