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Indian Standard

CENTRIFUGALLY CAST ( SPUN) IRON PRESSUREPIPES FOR WATER, GAS AND SEWAGE —

SPECIFICATION

(Fourth Revision )

ICS 23.040.10

Q BIS 2001

BUREAU OF INDIAN STANDARDSMANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG

NEW DELHI 110002

July 2001 Price Group 8

Pig Iron and Cast Iron Sectional Committee, MTD 6

FOREWORD

This Indian Standard was adopted by the Bureau of Indian Standards, after the draft finalized by the Pig Iron andCast Iron Sectional Committee, had been approved by the Metallurgical Engineering Division Council.

This standard was first published in 1960 and subsequently revised in 1967, 1976 and 1989. While reviewing thisstandard, in view of the experience gained, the Committee has decided to revise it incorporating the followingmodifications:

a) Amendments issued have been incorporated.

b) Definition of various terms have been incorporated.

c) A clause on type of joints and inter-connection has been incorporated.

d) Tolerance on barrel diameter and socket dimensions ( push-on joints) have been modified.

e) A general clause on Quality Assurance System has been incorporated.

In the preparation of this standard due consideration has been given to the manufacturing and trade practicesfollowed in the country in this field and assistance has been derived from the following International Specifications:

1S0 13: 1978 Grey iron pipes, special castings and grey iron parts for pressure main lines; issued by theInternational Organization for Standardization ( 1S0 ).

BS :4622 Specification for grey iron pipes and fittings, issued by the British Standards Institution ( BSI ).

The composition of the committee responsible for formulation of this standard is given in Annex C.

For the purpose of deciding whether a particular requirement of this standard is complied with, the final value,observed or calculated, expressing the result of a test, shall be rounded off in accordance with IS 2:1960 ‘Rules forrounding off numerical values ( revised )’. The number of #significant places retained in the rounded off valueshould be the same as that of the specitied value in this standard.

.

.

.,

Indian Standard

CENTRIFUGALLY CAST ( SPUN)PIPES FOR WATER, GAS AND

SPECIFICATION

(Fourth1 SCOPE

1.1 This standard covers the requirements forcentrifugally cast (spun) iron pipes for pressure mainlines for water, gas and sewage, manufactured in metal( lined or unlined ) or sand lined moulds. By sand it isto be understood, sand or mineral based materials usedin foundry trade irrespective of the type of bondingagents.

1.2 This standard is applicable to cast iron pipeshaving sockethpigot ( both lead caulked or push onflexible ) or flanges as specified in this standard.Increasing use is being made of various forms ofMechanical and or differently designed ‘Push-on’flexible joints, it is not possible to include such jointsin this standard without restricting their futuredevelopment. This staqdard is also applicable to suchmechanical and push-on joints, apart from what isspecified in the Standard, whose the inner profile ofsocket end and spigot end of the pipe shall dependon the type of rubber gasket ensuring that the overalldimensions are maintained for reasons of safety andinterchangeability.

NOTE — The word “push-on flexible joint” have beenreferred as “push-on joint” hence forth in this standard.

2 REFERENCES

2.1 The following Indian Standards contain provisions,which through reference in this text, constituteprovisions ofthis standard. At the time of publication,the editions indicated were valid. AH standards aresubject to revision and parties to agreements basedon this standard are encouraged to investigate thepossibility of applying the most recent editions of thestandards indicated below:

IS No. fitle

638:1979 Sheet rubber jointing and rubberinsertion jointing

1387:1993 General requirements for the supplyof metallurgical materials (secondrevision )

1608:1995 Mechanical testing of’ metals —Tensile testing ( second revision)

Revision )IS NO.

5382:1985

11606:1986

12820:1989

13382:1992

IS 1536:2001

IRON PRESSURESEWAGE —

Title

Rubber sealing ring for gas mains,water mains and sewers (firstrevision )

Method of sampling of cast ironpipes and fittings

Dimensional requirements of rubbergaskets for mechanical joints andpush-on joints for use with cast ironpipes and fittings for carrying water,gas and sewage — Specification

Cast iron specials for mechanical andpush-on flexible joints for pressurepipe lines for water, gas and sewage

3 DEFINITtONS

For the purpose of this standard, the followingdefinitions shall apply.

3.1 Pipe

Casting of uniform bore, straight in axis, having eithersocket, spigot or flanged ends, except for flanged-sockets, flanged-spigots and collars which are classifiedas ‘fittings.

3.2 Fittings

Cdtiig othertharta pipe which allows pipeline deviation,change of dmtion or bore. In addition flanged-sockets,flanged-spigots and collars are also classified as fittings.

3.3 Accessory

Any item other than a pipe or fitting which is used ina pipeline, such .aa:

— glands and bolts fm mechanical flexible joints

- glands, bolts and locking rings or segmentsfor restrained joints

NOTE — Vatvea and hydrants of all types are not coveredby the term accessory.

3.4 Flange

Flat circular end of a pipe or fitting, extendingperpendicular to its axis, with bolt holes equally spacedon p circle.

1

f

1S 1536:2001

NOTE — A flange maybe fixed ( for example integrally have been taken as the basis for evolving the seriescasgthreaded-onor adjustable;an adjustableflangecomprises ofpipes. CkrwAallowsalOp ercentincremeint hicknessa ring, in one or several parts bolted together, which bearson an end j oint hub and can be freely rotated around the

over class LA. Class Ballowsa20 percent increase

pipe axis before jointing.in thickness over Class LA.

3.5 Collar; Coupling — Connecting piece used to jointogether the spigots of mating pipes or fittings.

3.6 Spigot — Male end of a pipe.

3.7 Socket — Female end of a pipe to make the jointwith the spigot of an adjacent component.

3.8 Gasket — Sealing component of a joint.

3.9 Joint — Connection between the ends of pipesin which a gasket is used to effect a seal.

3.10 Flexible Joint — A connection between individualpipes that provide angular deflection or axial movement,or a combination of both, in service without impairingthe efficiency of the connection.

3.11 Push-in Flexible Joint —A flexiblejoint in whichan elastomeric gasket is located in the socket and thejoint assembly is eflected by entering the spigot throughthe gasket into the socket.

3.12 Flanged Joint — Joint between two flanged ends.

3.13 Nominal Size DN — Numerical designation ofsize which is common to all components in a pipingsystem. It is a convenient round number for referencepurposes and is only loosely related to manufacturingdimensions.

3.14 Nominal Pressure PN — A numerical designationexpressed by a number which is used for referencepurposes. All components of the same nominal sizeDN designated by the same PN number have compatiblemating dimensions.

4.1.1 For speciaI uses, Classes C, D or E may be derivedafter allowing corresponding increases of thicknessof 30,40 or 50 percent respectively.

4.2 Centrifugally Cast Pipes with screwed on Flangesto t,hisstandard shall be of Class’ B’ only. For specialusesClass C, D or E may be made available under mutualagreement between manufacturer and customer.

5 SUPPLY OF MATERIAL

5.1 The general requirements relating to the supplyof the material are laid down in IS 1387.

6 MANUFACIWRE

6.1 The metal used for the manufacture for pipes shallbe of good quality commensurate with the mechanicalrequirement laid down in 11. R shall be manufacturedby any method at the discretion of the manufacturerprovided that the requirements defined in this standardare complied with.

6.2 The pipes shall be such that they could be cut,drilled or machined. In case of dispute the pipes maybe accepted provided hardness measured on the externalunmachined surface does not exceed 230 HBS.

6.3 Pipes centrifugally cast shall be heat treated inorder to achieve the necessary mechanical propertiesand to relieve casting stresses.

6.3.1 If necessary, the pipes maybe subjected to reheattreatment to ensure that Brinell hardness does not exceedthe specified value and the specified mechanicalproperties are satisfied.

3.15 Length — Effective length of a pipe, as shownon the drawings.

7 SURFACE CONDITION AND REPAIRS

NOTE — For flanged pipes the effective length is equalto the overall length and is noted L. For socketed pipesthe effective length is equal to the overall length minusthe spigot insertion depth.

3.16 Ovality — Out of roundness of a pipe section;Al –Az

it is equal to 100 ( ) where ,A,, is theA, +/4>

maximum axis and A2 the rninirnfimaxisof the pipe cross-section.

3.17 Deviation on Length — Amount by which thedesign length may differ from the standardized lengthofa pipe.

4 CLASSIFICATION

4.1 Pipes have been classified in this standard as LA,A and B according to their thickness. Class LA pipes

7.1 The pipes shall be stripped with all precautionsto avoid warping or shrinkage defects, detrimental totheir good quality. The pipes shall be sound and freefrom defects and surface imperfections which couldimpair their compliance with the requirements of thisstandard. Pipes showing small imperfections whichresult from the method of manufacture, and which donot affect their serviceability, shall not be rejected onthat account alone. Minor defects arising out ofmanufacturing process may be rectified with the consentof the purchaser.

7.2 Repairing of defects by soldering or applicationof epoxy putty maybe carried out to such minor defectsprovided that the repair pipes comply with all therequirements of 7.3.

7.3 When necessary, pipes may be repaired to remove

2

IS 1536:2001

surface imperfections and localized defects whichdo 8.5.3 The cast iron pipes having screwed on flangesnot affect the entire wall thickness, provided that the shall be sealed at the threaded joint between the piperepaired pipes comply with all the requirement and the flange by a suitable sealing compound. Unlessof 11 and 12 of this standard. otherwise specified, the sealing compound applied to

7.4 Only minor defects up to 100 mm2 area can bethe threaded joint shall be suitable for use with. ‘raw’

categorized as salvagible. Section thickness of suchand potable water (up to a temperature of 10O”C), gas

defects should be less than 15 percent of nominal walland normal domestic sewage.

thickness. 8.5.4 Alternative types of sealing compound, for pipes

8 TYPE OF JOINTS AND INTER-CONNECTIONused for other duties, such as, carrying industrialeffluents, chemicals and town gas; shall be compatible

8.1 General

Joint designs for socket and spigot pipe suitable forleadjoint and push-onjoint which are generally followedin this country are given in this standard. Details ofstandard flanged joint is also given in this standard.

8.2 This standard does not restrict the use of othertype of joints or future development of other jointsas long as over all dimensions are maintained for reasonsof safety and interchangeability.

8.3 Push-on Joint

In case ofpush-on flexible joints, the spigot ends shallbe suitably chamfered or rounded off for smooth entryof pipe in the socket t%ted with the rubber gasket.

8.4 Flexible Joints

Pipes with flexible joints shall conform to 13.3 of this

and shall be the subject of agreement between themanufacturer and the purchaser.

8.5.5 For screwed on flanged pipes, the method ofscrewing and the exact form of thread are left to thediscretion of the manufacturer in view of the fact thatflanges are never removed after screwing on the barrelsof the pipes.

8.5.6 The range of Cast iron pipe having screwed onflanges shall be up to and including DN 600 and shallconform to the requirement of Tables 5 and 9.

8.6 Materials in Contact with Potable Water

8.6.1 When used under the conditions for which theyare to be subjected, in permanent or in temporary contactwith water intended for human consumption, Cast ironpipes and their joints shall not deteriorate the qualityof water or should not impart any taste or odour.

standard for their spigot external diameters DE andtheir tolerances. This offers the possibility of 9 RUBBER GASKETS

interconnection between components equipped with 9.1 Rubber gaskets for use with push-on-joints shalldifferent types of flexible joints. conform to IS 5382.

NOTE — For interconnection with existing pipelineswhich may have external diameters not in compliance

9.2 The dimension of rubber gaskets, for use with push-

with 13.3, the manufacturer’s guidance wilI be followed on joint as per this standard, shall conform to 1S12820.

as to the appropriate means of interconnection ( forexample adapters ). 9.3 Rubber gaskets for use with flanged joints shall

conform to IS 638.8.4.1 For high pressure mains, overworking pressure1.6. MPa suitable flexible joint maybe preferred where 10 SAMPLING

the joint is restrained against axial movement. 10.1 Sampling criteria for various tests, unless specified

8.5 Flanged Joints in the standard, shall be as laid down in IS 11606.

The dimensions and tolerances of the screwed on 10.2 The mechanical acceptance tests shall be carriedflanges of pipes shall comply with details given in 13.4. out on cast iron pipes grouped in batches as follows.This ensures interconnection between all flangedcomponents ( pipes, fittings, valves... ) of the same Each batch shall be made up of pipes cast successively

DN and PN and adequate joint performance. as follows:

8.5.1 In case of cast iron pipes with screwed on flanges Size Range Batch Size

the flanges shall be at right angle to the axis of the (DN)

pipe machined on face. The bolt holes shall be cored 80-300 200 pipesor drilled.

350-600 100 pipes8.5.2 The bolt hole circle shall be concentric with thebore and holes of the two flanges of the pipe shall be

700-1000 50 pipes

correctly aligned. Above 1050 25 pipes

3

$,—.—

IS 1536:2001

11 MECHANICAL TESTS

11.1 General

Mechanical tests shall be carried out, duringmanufacture. Tests for every four hours of productionshall be conducted. However, for pipes 700 DN andabove manufactured by controlled cooled process, atleast one tensile test for every 25 pipes or part thereofproduced during the day shall be conducted; The resiultobtained shall be taken to represent all the pipes ofall sizes made during that period.

11.2 Ring Test and Tensile Test

The ring test shall be conducted for pipes for sizesup to and including 300 mm as per the details given inAnnex A’). For sizes beyond 300 mm bar tests are tobe conducted. Test one test piece obtained by cuttingrings or bars from the spigot end of one pipe selectedfor testing except for pipes manufactured undercontrolled cooled process described in 11.1. For sizesbeyond 300 mm, tensile test shall be conducted as perthe details given in IS 1608.

a) Ring test ( for pipes centrifugally cast in metalsand mouids )

Nominal Diameter Modulus ofRupture, Min MPa

Up to and including 300 mm 390

b) Tensile test for pipes over 300 mm

two additional tests shall be made on test piecesselected from two other pipes from the same lot. If boththe test results satisfy the specified requirements, thelot shall be accepted. Should either of these additionaltest pieces fail, the lot shall be deemed as not complyingwith this standard.

11.4.1 In the event of lot not found conforming to thisstandard, the same may be re-offered for inspectionafter reheat treatment.

12 HYDROSTATIC TEST

12.1 Pipes shall be tested hydrostatically at the pressurespecified in Tables 1 and 2, as appropriate. To performthe test, the pressure shall be applied internally andshall be steadily maintained for a period of minimum10s. The pipes shall withstand the pressure test andshall not show any sign of leakage, sweating or otherdefects. As far as possible the hydrostatic test shallbe conducted before coating the pipes.

12.2 Worka Test Requirements-Socket and spigotpipes shall withstand test pressures specified in Table1. Flanged pipes shall withstand hydrostatic testpressures specified in Table 2.

NOTE—Suggeatdmaximumpressure(inclusiveof surge)andmaximumhydrostatic test pressure after iristailationfor socket and spigot pipes and flanged pipes are givenin Annex B for information.

12.2.1 When pipes are required for higher testpressures, test pressures are subject to special agreementbetween the purchaser and the manufacturer.

Type of Mould Nominal Diameter Tensile StrengthMin, MPa

i) For pipes centrifugally cast in Over 300 mm and up to and mmetal moulds including 600 mm

0ver600 mm 180

ii) For pipes centrifugally cast in sand All diameters 180lined moulds

NOTE — For pipes of Class-C and above minimum tensile should be 180 MPa.

11.2.1 All pipes from which rings or bars have beencut for quality checks shall be accepted by the purchaseras complete lengths.

11.3 Brinell Hardness Test

For checking the Brinell hardness specified in 6.2 thetest shall be carried out .on the test ring or bars cutfrom the pipes used for tests under 11.2 in accordancewith IS 1500.

11.4 Retest

If test piece representing a lot fails in the first instance

1~For further details of Ring test and Tensile test refer to Annex A.

4

Table 1 Hydrostatic Test Pressure forCentrifugally Cast Socket and Spigot Pipes

( Clauses 12.1 and 12.2)

Class Hydrostatic Test Pressure for Works, MPat 3

Up to DN 6001J DN 700 and Above(Including)

(1) (2) (3)

LA 3.5 I .5

A 3.5 2.0

B 3.5 2.5

I) DN — Nominal diameter.

f ,.—

.

Table 2 Hydrostatic Test Pressure forCentrifugally Cast Pipes with Screwed on Flanges

( Clauses 12.1 and 12.2)

class Hydrostatic Test Pressure for Works, MPaf \

Up to 300 DN 350 to 600 DNIJ

(i) (2) (3)

B 2.5 1.6

1)DN — N~mina\ diameter,

13 SIZES AND DIMENSIONS

13.1 The range of nominal diameter, DN, of pipes andflanges followed in this standard is as follows :

80,100,125,150,200,250, 300,350,400,450,500,600,700,750,800,900, 3000and 1050 mm.,.

The range of nominal diameter DN for screwed onflangeswill be 80,100,125, 150;200,250,300,350,400,450,500 and 600 mm.

13.2 Working lengths “L” of socket and spigot pipesand for flanged pipes followed in this standard areasfollows :

a) Socket and spigot pipes: 3.0,3.5,3.66,4,4.5,5,5.5 and6m;

b) Flanged pipes: 2.75,3,4,4.5,5,5.25 and 5.5 m.

13.3 Dimensions for socket and spigot of pipes forlead joint and for push-on joint irrespective of classare given in Tables 3 and 4 respectively.

13.4 Dimensions of screwed flanges of pipes andstandard flange drilling of flanged pipes are given inTable 5.

13.5 Dimensions and mass of uncoated socket andbarrel of both the lead joint and push-on joint pipesare given in Tables 6, 7 and 8 for Class LA, A and B

1S 1536:2001

respectively.

13.6 Dimensions and mass of uncoated flanges andbarrel of flanged pipes ( Class B ) centrifugally castwith screwed flanges are given in Table 9.

NOTE — Mass for sockets, pipe barrels and flanges asgiven in Tables 6 to 9 are calculated on the basis of the

density of cast iron as 7.15 kg/dm3.

14 TOLERANCE

14.1 Tolerance on Barrel Diameter and SocketDimensions Suitable for (Lead Joint)

I’he tolerances shall be as follows :

Dimensions Nominal TolerancesDiameter DN m

a) External dia- All diameters *1/2 f=*(4.5meter of barrel +0.00 ]5DN)

(DE)

b) internal dia- All diameters ●1/3 f-*(3meter of socket + 0.001 DN )(DI)

c) Depth of Up to andsocket (P) including DN 600

Over DN 600 up *5to andincluding 1050 *lo

NOTE — ‘f’ is the caulking space of the joint in mmand is equal to ( 9 + 0.003 DN ).

14.1.1 The maximum or minimum jointing spaceresulting from these tolerances is such that the jointingof the pipes and fittings is not adversely affected.

14.2 Tolerances on Barrel Diameter and SocketDimensions (Push-on Joints)

Tolerances on barrel diameter and socket dimensions(push-on joints) shall be as follows:

Nominal Tolerances on Socket, mmDiameters

rA

>DN DI I J K P Qo NDE

(1) (2) (3) (4) (5) (6) (7) (8) (9) (lo)

80-200 * 1.50 + 2.0 +1.5 * 2.0 +5.0 *3.() * 0.5 *1.O * 2.0–1.0 – 0.5 -15.0

250-300 * 1.50 +2.0 +1.5 * 2.5 +5.0 i3.o * 0.5 +1.0 * 2.25– 1.25 –1.0 – 10.0

350-450 * 1.50 +2.0 +2.0 *3.O * 10.0 ● 4.0 * 0.5 +1.0 &2.25–1.5 –1.0

500-600 ~ 1.75 + 2.() + 2.0 *3.5 * 10.0 *4.O +0.5 +1.0 *2.25– 1.75 – 1,.0

700-800 * 2.5 +3.() +2.5 * 4.0 * 10.0 ● 5.0 * 0.5 +1.6 + 2.75–2.0 –1.5

900-1600 *3.O + 4.0 +2.5 ● 5.0 ● 10.0 ● 6.0 * 0.5 +1.0 *3.25-3.0 –2.0

–--.?

4-,

*I

. . . ,.,

5

IS 1536:2001

Table 3 Dimensions of Sockets and Spigots of Pipes ( Lead Joint)

(Clause 13.3 )

u= 3+0.001 DNg =20+ 0.03 DNh = 8 + 0.025 DN

y= 9 + 0.003 DN

All dimensions in millimetres.

Nominal Barrel I Socket DimensionsDiameter

DN mmI

DE DI

I

P

I I

h a KL

I

M

I

N

k% A4in (optional)

(1)

350

400

450

500

600

700

750

800

(2) (3)

80

I 00

125

150

200

250

300

98

118

144

i 70

222

274

326

378

429

480

532

635

738

790

842

900 945

1000 1048

1050 I 1124

116

137

163

189

241

294

346

398

449

501

553

657

760

813

865

968

I 072

1 143

(4)

84

88

91

94

100

103

I 05

107

110

112

115

120

122

123

125

128

128

128

(5)

22.5

23.0

24.0

24.5

26.0

27.5

29.0

30.5

32.0

33.5

35.0

38.0

41.0

42.S

44.0

47.0

50.0

52.0

(6)

10.010.5

11.0

12$0

13.O

14.5

15.5

17.0

18.0

19.O

“20.5

23.0

25.5

27.0

28.0

30.5

33.0

36.0

(7)

3.0

3.0

3.0

3.0

3.0

3.5

3.5

3.5

3.5

3.5

3.5

3.5

3.5

4.0

4.0

4.0

4.0

5.0

(8)

8.5

8.5

8.5

8.5

8.5

8.5

8.5

8,5

8.5

8.5

8.5

8.5

8.5

8.5

8.5

8.5

8.5

8.5

(9)

9

9

9

11

12

14

14

14

15

18

20

22

24

25

25

27

28

28

(lo)

14

14

14

16

17

18

18

19

20

22

24

25

26

28

28

30

:2

32

(11)

3

3

3

3

3

3

3

3

3

3

3

3

3

3

3

3

3

3“

mu 1 co .

1 Dimensions K, L, h4and N are for guidance only.

JointThickness

f

(12)

9.0

9.5

9.5

9.5

9.5

10.0

10.0

10.0

10.0

10.5

10.5

[1.0

11.0

11.5

11.5

11.5

12.0

12.O

.

2 Dimensions figures ‘g’ and ‘K’ do not effect interchangeability, they only indicate minimum permissible thickness.

3 For alternate design L = M.

6

IS 1536:2001

Table 4 Dimensions of Sockets and Spigots of Pipes for Push-on Joints

( Clau$e 13.3 )

1-Q

1

x’

*’ 20°

NP

K.--

,.

DE

All dimensions in millimetres.

Nominal BarrelDiameter

DN DE x Df PMin

(1) (2) (3) (4) (5)

80 95 9 99 .89

100 115 9 119 92

Socket ImQIIIJIK NOMin

(6) (7) (8) (9)

52 121 1,16 102

52 141 136 I 22

52 167 162 148

52 193 I 88 174

6C 248 242 226

(lo) I (11) (12)1 (13)1(14) I (15) I

-t-

12 5.5

12 5.5 *

1125 I 14!1 9 I 1451 94 12 I 5.5 5141 3112.01

+

12 5.5

15 6.5I 200 I 2i91 9 I 223 I 102

250 271 9 275.5 106

300 323 9’ 328 110

350 375 14 380.5 110

400 426 14 431.5 112

450 477 14 482.5 112

500 529 14 535 117

600 632 14 638 125

700 735 15 742.5 138

750 787 15 795 143

800 839 15 846.5 143

900 942 15 949.5 143

1000 I 045 19 1 052 143

1050 1 118 19 1 125 143

15 ! 6.5

=l=l=E67 3s5 35 I 33 I

67 407 403 383

74 461 454 435

74 5 I’2 508 485

81 567 563 538

17 I 8.0 7151 4116.71

17 I 8,0

*--t-

19 9.0

19 9.0 8 5 4.5 20.8

9 5 5 22.1

10 5 5 20.8

10 5 5 25.0

10 5 5 27.0

10 6 5 28.0

II 6 6 28.0

II 6 6 30.0

II 6 6 32.0

21 I 10.086 I 673 ] 669 I 642 21 I 10.0

21 I 11.088 I 780 ] 774 I 745

21 I 11.0

+

22 11.0

22 12,0

91 I1092IIO88IIO56 22 I 12.0

91 111651116111134 23 I 12.0

NOTES

1 Dimensions S, T and L are for guidance only.

2 For nominal diameters DN 600 and above the sockets maybe without centering ring as in the alternative sketch given above.

7

IS 1536:2001

Table 5 Dimensions of Screwed Flanges of Pipes and Standard Flange Drilling of Flanged Pipes

( Clause 13.4)

Ll!jtr+—..b l--..

.—

--=ld-

All dimensions in millimetres.

NominalLliamctcr

DN mm

(1)

80

I 00

125

150

200

250

300

350

400

450

500

600

c

(2)

160

180

210

240

295

350

400

460

515

565

620

725

D

(3)

200

220

250

285

340

395

445

505

565

615

670

780

E

(4)

132

156

184

211

266

319

370

429

480

527

582

682

Dimension

b

(5)

21.0

22.0

22.5

23.0

24.5

26.0

27.5

29.0

30.0

31.5

33.0

36.0

7a r

(6) (7)

42 6

44 6

45 6

46 6

49 6

52 6.,

55 8

58 8

61 “8

64 8

-L67 8

70 8

f

(8)

3

3

3

3

3

3

4

.4

4

4

4

5

s

(9)

17

18

19

20

22

24

26

28’

30

32

34

38

A-HOLES EQIMLL Y S=

—.

Mob

Diameter

(lo)

4

8

8

8

8

12

12

16

16

20

20

20

(11)

19

19

19

23

23

23

23

23

28

28

28

31

Diameter ofBolts

(12)

16

16

16

20

20

20

20

20

24

24

24

27

.

8

.

IS 1536:2001

Table 6 socket and Spigot Pipes —Class LA

e =10/12(7+

/

IIII

‘1

L\

0.02 DN )

(1)

80

100

125

150

200

250

Barrel I

(2) I (3) I (4) ! (5) ! (6)

98 95 7.2 14.7 5.5

118 115 7.5 18.6 7.1

144 I 1* I I 7.9 ! 24.2 9.2

300 I 326 I 323 I 10.8 I 76.5 I 29.8

350 378 375 11.7 96.3 37.5

400 429 426 12.5 116.9 46.3

450 480 477 13.3 141.0 56.0

500 532 529 14.2 165.2 66.0

600 635 632 15.8 219.8 89.3,

700 738 735 17.5 283.2 116.8

750 790 787 18.3 317.2 131.7

800 842 839 19.2 354.9 147.8

900 945 942 20.8 431.8 182.6

1000 i 048 1045 22.5 518.3 222.3

1050 1 124 1 118 23.6 S83.4 309.6

Total Mass for One Werking Length in kg

3.66 m 4m 4.5 m 5m 5.5 m 6m

(7) (8) (9) (lo) (11) (12)

59 64 — 79 — —

75 82 91 100 109 119

98 106 118 130 142 154

122 132 147 162 177 192

178 193 215 237 259 281

240 260 290 319 349 379

310 t 336 I 374 I 412 I 450 I 489

390 ] 423 I 471 I 519 I 567 I 615

474 I 514 I 572 I 631 ! 690 I 748

572 I 620 I 690 I 761 I 832 I 902

671 I 727 I 809 I 892 I 974 I 1057

894 I 968 I1078IL188I 12981 1408

I 153 I 250 I 391 1538 I 675 1816

1293 1400 1559 1718 1876 2035

1447 I 567 I 745 1922 2100 2277

1763 I 910 2126 2342 2558 2773

,2119 2295 2555 2814 3073 3392

2445 2643 2935 3227 3518 3810, ,. 1 , I

9

.‘LM-

4

IS 1536:2001 .

Table 7 Socket and Spigot I?ipes — Class A

(Clause 13.5 )

e=ll/12(7+0.02DN)

Nominal ‘ BarrelDiameter I Total Mass for One Working Length in kg

,, II

T7r73“66m4m4“5m(I) I (2) I (3) ] (4) I (5) I (6) (7) (8) (9) (lo) (11) (12)

64. 70 78 86 — —.

80 I 981 95, I 7.9 I 16.0 I 5.5

82 I 89 I 99 I 109 I 120’1 130 I100 118 115 8,3 20.5 7.1

125 I 44 141 8.7 26,4 9.2 106 I 115 I 128 I 141 I 155 I I 68 I

150 I 70 167 9.2 33.2 11.s

200 222 219 10.1 48.1 16.5

250 274 27 i 11.0 65.0 22.9

133 ‘ 144 161 178 I 94 211

193 209 233 257 281 305

261 I 283 I 315 I 348 \ 380 I 413 II 300 I 326 I 323 \ 11,9 I 84.0 I 29.8 337’ I 366 I 408 I 450 I 492 I 534 I

350 378 375 12.8 105.0 37.5

400 429 426 13.8 128.7 46.3

450 480 477 14.7 156.0 56.0

422 458 510 563 615 668

517 561 625 690 754 819

627 I 680 I 758 I 836 I 914 I 992 I

I 500 I 532 I 529 ~ 15.6 I 181.O I 66.0 7281 7901 8801 971] 10611 1152 \

I 600 I 635 I 632 I 17.4 I 241.4 I 89.3 97311055111761129611417 \ 1544 \

I 700 I 738 I 735 I 19.3 I 311.6 I 116.8 125711363115191167511830 I 1986 I

750 790 787 20.2 348.9 131.7

800 842 839 21. I 389.1 147.8

I 409 1 527 ‘ 1702 1876 ‘2051 2225 i

I 572 1704 1899 2093 2288 2482

1918 2080 2317 2554 2791 3028

2308 2502 2787 3072 3357 3642

2656 2874 3 195 3516 3836 4 157

I 900 I 945 [ 942 I 22.9 I 474.3 I 182.6

I 000 1048 1 045 24.8 570.0 222.3

1050 I 124 I 118 26.0 641.2 309.6

10

--L

IS 1536:2001

Table 8 Socket and Spigot Pipes — Class B

( Clause 13.5)

e=7+0.02DN

Nominal Barrel Total Mass for One Working Length in kgDiameter

DN DE DE e Mass Socket 3.66 m 4m 4.5 m 5m 5.5 m 6mmm Lead Push-on mm for Mass

Joint Joint One kmm mm Metre

k

(1) (2) (3) (4) (5) (6) (7) (8) (9) (lo) (11) (12)

80 98 95 8.6 17.3 5.5 69 74 83 92 — —

100 118 115 9.0 22.0 7.1 88 95 106 117 128 139

125 144 141 9.5 28.7 9.2 114 124 138 153 167 181

150 170 167 10.0 35.9 11.5 143 155 173 191 209 227

200 222 . 219 11.o 52.1 16.8 207 225 251 278 304 329

250 274 271 12.0 70.6 22.9 281 305 341 376 411 447

300 326 323 13.0 91.4 29.8 364 395 441 487 533 578

350 378 375 14.0 114.5 37.5 457 495 553 610 667 725

400 429 426 15.0 139.5 46.3 557 604 674 744 814 883

450 480 477 16.0 169.0” 56.0 675 732 816 90 I 986 1070

500 532 529 17.O 196.7 66.0 786 853 951 1049 1 148 1246

600 635 632 19.O 262.9 89.3 I 052 1 141 1272 1404 1.535 1667

700 738 735 21.0 338.2 116.8 1355 1470 1639 1808 1977 2146

750 790 787 22.0 380.6 131.7 1525 1644 1844 2029 2225 2415

800 842 839 23.0 423. I 147.8 ‘1 696 1840 2052 2263 2475 2686

900 945 942 25.0 516.6 182.6 2073 2249 2507 2766 3024. 3282

1000 1048 1045 27.0 619.2 222.3 2489 2699 3009 3318 3621 3938

I 050 1 124 1 118 29.0 713.3 309.6 .2920 3 163 3519 3876 4233 4589

IS 1536:2001

Table 9 Flanged Pipe Centrifugally Cast with screwed Flange —Class B

( Clause 13.6)

e= 7 + 0.02 DN

DN DE e Mass Mass Total Mass for one Workiq Leagtti L ia kgfor One for OneMetre Flange

mm mm mm b .kl! 2.75 m 13m 4m 4.5 m 5m 5.25 m 5.5 m

(1) (2) (3) (4) (5) (6) (7) (8) (9) (lo) (11) (12)

80 98 8.6 17.3 4.3 56 60 78 86 95 99 104

100 118 9.0 22.0 5.0 70 76 98 109 120 126 131

125 144 9.5 28.7 6.6 92 99 128 142 157 164 171

150 170 10.0 35.9 8.2 115 124 160 178 196 205 214

200 222 11.o 52.1 1 I .4’ 16i5 179 23 I 257 283 296 309

250 274 !2.0 70.6 14.7 224 241 312 347 382 405 418

300 326 13.0 91.4 18.6 289 311 403 448 484 517 540

350 378 14.0 114.5 21.2 3s7 386 500 558 615 644 672

400 429 .15.0 i39.5 27.3 438 473 613 682 752 787 822

450 480 16.0 169.0 32.6 530 572 741 826 910 952 983

500 532 17.0 196.7 38. I ’617 666 863 961 1060 1 109 1 158

600 635 19.0 262.9 52.4 828 893.5 1156 I 288 1419 I 485 I 551

700 738 21.0 338.2 71.9 1074 1 158 1497 1666 I 835 i 919 2004

750 790 22.0 380.6 84.4 1216 1311 1691 1882 2072 2167 2262

800 842 23.0 423.1 96.9 1357 1463 1886 2098 2309 2415 2521

900 945 25.0 516.6 113.5 1645 1777 2293 2552 2810 2939 3068

1000 1048 27.0 619.2 134.0 1971 2126 2745 3054 3364 3519 3674

1050 1 124 29,0 713.3 169.9 2301 2480 3193 3550 3906 4085 4263

J

14.2.1 Tolerance on Ovality ( Push-on Joint )

In case of oval spigot ends (DE) the minor axis ispermitted tabe lessthan the minimumallowablediameterby value given below provided the mean diameter DEmeasured by circumferential tape comes within theminimum allowable dime~siemsofDE ( Table 4 ) afier

applying tolerance:. ...’..

Nominal Diameter Allowable DlflerenceDN Betweert Minor Axis ~ :

und DEj. Min z,’ .Snn. .

80-300 1.0

350-600 ,’ ~;75. .

700 2.00

750-800 ,2.4 “,

900-1000 3.5 ‘ “’

14.3 Tolerance on Thickness ‘

The tolerance on the pipe wall thicktiess “d’ shall beas follows:

Dimensions Tolerancem“

Wall thickness -(1+0.05 e)lJ

Flange thickness *(2+o.05b)

where

e = thickness of the pipe wall in mm, andb = thickness of the flange in mm.

1)NOlimit for the plus tolerance is specified..

14.4 Tolerance on Length

The tolerance on length of pipes shall be as follows:

~pe of Casting Tolerancem’

a) Socket and spigot and ~ &100plain ended pipes

b) Flanged pipes *10

14.4.1 On the total number of socket and spigot pipes

IS 1536:2001

to be supplied in each diameter, the manufacturer maysupply up to 10 percent in lengths shorter than thespecified length as follows:

Spectfled Length

Upto4m

Over 4 m

Decrease in Length

0.5, 1m

0.5,1,1 .5,2m

14.5 Permissible Deviation from a Straight Line

The pipes shall be straight. When rolled along twogantries. Separated by approximately two-thirds thelength of the pipe to be checkathe maximum deviationfiomastraightline in mm shaUnot be greater than 1.25times the length ‘L’ in metres of the pipe, thus,.

&<l.25L

14:6 Flanges .

Tolerances for the various dimensions of flanges ~hallbeasgiven in Tables 10,11, 12and 13.

14.7 Toleranceom Masa “’ “

14.7.1 The ‘permissible tolerances on standard massof pipe shall be * 5 percent.

14.7.2 The pipes of the heavier m= than the maximumshall be accepted provided they comply in every otherrespect with the requirements of this standard.

15 COATING

15.1 Eachpipeshallbe coated inaccordancewith 15.1.1to 15.1.5.

15.1.1 Coating shalt not be applied’to any pipe unlessits surfaces are clean, dry and free from rust.

15.1.2 Unless otherwise agreed tytween the purchaserand the manufacturer all pipes shall be coated externallyahd internally with the saine material by dipping in atar or suitable base bath. The piped may be eitherpreheated before dipping or the bath maybe uniformlyheated. Alternatively, ifmutually agreed between thepurchaser and the manufacturck,thepipes may be coatedby ‘spraying or brush painting.

15.~.3 The coating iaterial shall set rapidly with goodadherence and shall not scale off.

Table 10 To1eraneas&t4he External Dmmeter ‘D’

(Clause 14.6 )

DN 80 100 125 150 200 250 300 350 400 450 500 boo 700 750 800 900 I 000and

I 0501

1.l,”~. *,;

“,

.

Tolerance k 4.5 I +5.5, -2.5 I +6.5, -3.5 I +7.5 , -4.0on D I

IS 1536:2001

Table 11 Tolerances on Raised Face Height(/)

( Clause 14.6)

13 I +1.5, -2.0 I4 +2, -3.0

5 +2.5, -4.0

Table 12 Tolerances on Thickness ON Flange

(Clause 14.6 )

I Type of Flange I Tolerance I

Screwed on flanges *(2 + 0.05 b)

Table 13 Tolerances on Flange Drilling

( Clause 14.6)

Dimension

Bolt hole diameter, d

Bolt HoleDiameter I

--i

Tolerance

+2-0

Pitch circle diameter, .C &2

Centre to centre of adjacent bolt holes ● 2

15.1.4 Coating test shall be conducted on a samplepiece cut from the pipe having a sample area not lessthan 10 sq cm.

15.1.5 Where the coating material has a bitumen “orsimilar base, it shall be smooth and tenacious and hardenough not to flow when exposedto a temperature of65°C for five minutesbutnot sobrittle ata temperatureof O’T asto chipoff whenscribedlightlywith apenknife.

15.1.6 When the pipes are to be used for conveyingpotable water the inside coating shall not contain anyconstituent soluble in such water or any ingredientwhich could impart any taste or whatsoever to thepotable water atler sterilization and suitable washingof the mains.

15.2 Pipes with or without socketsand flanges whichare imperfectly coated or where the coating does notsetorconforrnto therequiredquality,speeifiedin 15.I.1to 15.1.5 the coating shall be removed and the pipes/flanges recoated.

16 QUALITY ASSURANCE

16.1 General

The manufacturer shall demonstrate the conformityof his products with this standard by controlling themanufacturing processand carrying out the varioustests.

16..2Quality Assurance System

The manufacturer shall control the quality of hisproductsduringtheirmanufactureby asystemof processcontrol in order to comply with the technicalrequirements of this standard. Wherever possible,statistical sampling techniques should be used.

16.3 If the purchaser desires to inspect pipes at the ““manufacturers pl,ant, the purchaser shall so specifyon the purchase order.

17 MARKING

17.1 Each pipe shall have cast, stamped or indeliblypainted on it the following appropriate marks:

a)

b)

c)

d)

e)

Manufacturer’sname, initialsor identificationmk,

The nominal diamete~

Class reference;

Mass of pipe; and

The lasttwo digitsof the year of manufacture.

17.1.1 Marking may be done:

a) on the socket facesof pipe centrifugally castin metal mouid, and

b) on the outside of the socket or on the barrelof pipe centrifugally cast in sand mould.

17.2 Any other marks required by the purchaser maybe painted on.

.

.

14

1S 1536:2001

ANNEX A

( Clause 11.2 )

MECHANICALTESI’S

A-1 RINCTESWORPIPESCEN’IRIFUGALLYCHJNMETAL MOULDS

A-1.1 On pipesof upto andincluding300 mm nominaldiameter,ringsof approximately 25 mm width shall,betested on a suitable machine. The rings shall besupported on two knife edges diametrically opposedand the load applied from the inside at these points(see Fig. 1).

A-1.2 The modulus of rupture of the ring shall becalculated from the breaking load by the followingformula:

3P(D-e)R=

xbt+where

R=

P=

D=

e .

b=

modulus of rupture of the ring in MPa,

breaking load in newtons,

external dia of the ring in mm,

wall thickness of the ring in mm, and

breadth of the rin mm.

A-2 TENSILE TESTS ON BARS FOR PIPESCENTRIFUGALLY CAST IN METAL OR RESINSAND MOULDS

A-2.1 The tensiletestbarscutfrom the pipesare about90 mm long, and have diameter of about 6 mm whichmay vary with the thicknessof the pipe. The endsareprepared soasto fit the testing machine ( see Fig, 2 ).

NOTE — If agreed to between the purchaser and themanufacturer the dimensions of the test bars shal I be asfollows :

Thickness of Diameter of Radius ofPipes Test Bar Curvature (Min)

mm mm mm

up to 13 9 32

Over 13 andup to 17 10 32

Over 17 14 32

.-

A!,:

FIG.1 RING TEST FORPwas CEJIITRIFUGALLYCASTINMETALMourns

15

9

H-w-H-

WAll dimensions in millimetres.

FIG.2 TENSILETESTSONBARSTORPJPmCENTRIFUGALLYCASTINMETALQNRESINSANDMOULD

.

.i.,,,;. ,, .,,v,

L

16

1S 1536:2001

ANNEX B

[ Clause 12.2( Note)]

HYDROSTATIC TEST PRESSURE AND HYDRAULIC WORKING PRESSURE

Nominal Description Suggested Maximum Suggested MaximutnDiameter Hydrostatic Site Hydraulic Working

DN Test Pressure in IVIPa Pressure (Inclusive ofSurge) in MPa

(1] (2) (3) (4)

80400 Spigot and socket spun pipes 1.6 1.0Class LA

80-600 Spigot and socket spun pipes 2.0 1.25Class A

Spigot and socket spun pipes 2.5 1.6Class B

700-1050 Spigot and socket spun pipes 1.5 1.0Class LA

700-1050 Spigot and socket spun pipes 2.0 1.2Class A

700-1050 Spigot and socket spun pipes 25 1.5Class B

W-3(K) Flanged pipes, Class B 2.5 1.6

350-600 Flanged pipes, Class B 20 1.6

.-

.

17

IS 1536:2001

ANNEX C( Foreword)

COMMITTEE COMPOSITION

Pig Iron and Cast Iron Sectional Committee, MTD 6

Chairman

DR P. N. BHA6WATI

Members

SHRIB. D. GHOSHSHRIR. N. GUIN ( Alterna/e )

SHIUV. PRAKASHSHRi N. K. KAUSHAL( A/ternate )

SHRIS. B. SENGUPTASHRIV. M. RALLI( Alternate )

SHRI K. V. RAMAKRISHNAN

SHRI M. P. PurwuswwY ( Ahernate )

SHRIUDAYANSEN

SHRIR. L. DUIIEY

SHRI L. P. BAFNA ( Alternate )

SHRIL. B. SINGHSHRI S. K. DOGRA( Alternate )

SHRIRAOHEYSHYAM

DR P. K. PANDA

DR P. T. PUSHP( Alternate )

DR S. PRAKASH

DR S. D. SINGH( Alterna/e )

SHRI A. CHATTERJEE

SHRIR. C. SOODSHRI R. P. BHALOTIA( Alternate )

SHRID. PRASADSHRI P. K. BASUTKAR( Alternate )

SHRIH. P. JETWARE

SHRI P. DHAR ( Alternate )

SHRIZ. AHWED

SHRIU. J. GUPTA( Alternate )

SHRIN. P. SHRSVASTAV

SHRIN. K. DUTTA( Alternate )

SHRI K. A. NAIDU

SHRIG. Tlw.a ( Alternate )

SHRI A. B. PANDEYSHRIB. K. BHAGAT( A/terns/e )

SHRI RAKESHCHANDERJAIN

SHRIMANDEEP.%NGH

SHRIN. MITRA

Director ( Met Engg )

Representing

Bhagwati Spherocast Ltd, Ahmedabad

Development Commissioner for Iron and Steels, Kolkata

Directorate General of Supplies and Disposals, New Delhi

Electrosteel Castings Ltd, Kolkata

Ennore Foundries Ltd, Chennai

Institute of Indian Foundrymen

Kesoram Spun Pipes and Foundries, Kolkata

Ministry of Defence (OFB), Jabalpur

Ministry of Railways, Ajmer

National Institute of Foundry and Forge Technology, Ranchi

National Metallurgical Lab, lamshedpur

Orient Trading Co, Kolkata

SAIL, Rourkela Steel PlanL Rourkela

Tata Engineering and Locomotive Co Ltd, Pune

The Indian Iron and Steel Co Ltd, Burnpur

The Indian Iron and Steel Co, Jamshedpur

The Tata Iron and Steel Co Ltd, Jamshedpur

Vkhakhapatnam Steel Plant, Vkhakhapatnam

Jayaswal Neco Ltd, Nagpur

Jainsons Industries, Jabalpur

High Tech Industries, Jalandhar

Direetor General, BIS ( Ex-oficio Member )

Secretaty

SHRISUNJAYKUMAR

Joint Director (Met Engg), BIS( Cantinued on page 19)

18

IS 1536:2001

( Confinuecfjbm page 18 )

Subcommittee on Pipes and Fittings, MTD 6:8

Convener Representing

SHRIA. CHATTERJEE Orient Trading Company, Kolkata

Members

SHRI A. N. PALCHOWDHURY A: N. Palchowdhury and Co, Kolkata

SHRI SUBRATAPALCHOWDHURY( Alternate )

SHRIS. B. SENGUPTA Electrosteel Castings Ltd, Kolkata

SHRI V. M. RALLI ( Alternate )

SHRI R. K. KEJRIWAL Indian Foundry Association, Kolkata

SHRI G. D. AGARWAL( Alternate )

SHRI D. K. HADA Indu Engineering and Textiles Ltd, New Delhi

SHRIC. P. RATHI ( Alternate )

SHRIR. L. DUBEY Kesoram Spun Pipes and Foundries, Kolkata

SHRJA. B. PANDEY Jayaswals Neco Ltd, Nagpur

SHRi B. K. BHAGAT( Alternate )

SHRI ASHOKAGARWAL Central Public Works Department, Delhi

SHRI RAJENDERPRASAD( Alternate )

SHRI T. B. PAUL The Indian Iron and Steel Co Ltd, Kulti

SHRIV. KUMAn ( Al(ernate )

SHRIB. L. GOYAL Paman Iron Foundry and Steel Rolling Mills, Mathura

SHRI RAKESHGOYAL( Alternate )

SHRI S. P. MOHANTI Spun Pipe Plant, Barbil

19

Bureau of Indian Standards

BIS is a statutory institution established under the Bureau of Indian Standards Act, 1986 to promote~, .,

harmonious development of the activities of standardization, marking and quality certification of goods andi=~k ~,

attending to connected matters in the country.,,

)1

Copyright

BIS has the copyright of all its publications. No part ofthesepnblications maybe reproducedin any form without If

the prior permission in writing of BIS. This does not preclude the free use, in the course of implementing the i,

standard, of necessary details, such as symbols and sizes, type or grade designations. Enquiries relating to ,,copyright be addressed to the Director (Publications), BIS. \

Review of Indian Standards

Amendments are issued to standards as the need arises on the basis of comments. Standards are also reviewedperiodically; a standard along with amendments is reaffirmed when such review indicates that no changes areneeded; if the review indicates that changes are needed, it is taken up for revision. Users of Indian Standardsshould ascertain that they are in possession of the latest amendments or ediiion by referring to the latest issueof ‘BIS Catalogue’ and ‘Standards: Monthly Additions’. (

This Indian Standard has been developed from DOG: No, MTD 6 (4226 ).

Amendments Issu@d Since Publication

Amend No. Date of Issue Text AffCcted

BUREAU OF INDIAN STANDARDS {

Headquarters: 1,

ManakBhavan, 9 Bahadur ShahZafarMarg, New Delhi 110002 Telegrams: ManaksansthaTelephones: 3230131,3233375,3239402 ( Common to all offices)

Regional OffIces: Telephone

Central: ManakBhavan, 9 Bahadur ShahZafar Marg

{3237617

NEWDELHI 110002 , 3233841

Eastern: 1/14 C. I. T. Scheme VIIM, V. I. P. Road, Kankurgachi{

3378499,3378561CALCUTTA700054

43378626,3379120

Northern: SCO 335-336, Sector34-A, CHANDIGARH 160022

{

603843602025

Southern: C. I. T. Campus, IV Cross Road, CHENNA1600 113

{2350216,23504422351519,2352315

Western: Manakalaya, E9 MIDC, Marol, Andheri (East)

{8329295,8327858

MUMBAI 400093 8327891,8327892

AHMADABAD. BANGALORJ3. BHOPAL, BHUBANESHWAR. COIMBATORE.FARIDABAD. GHAZIABAD. GUWAHATI. HYDEMBAD. JAIPUR. KANPUR.LUCKNOW. NAGPUR. PATNA. PUNE. RAJKOT. THIRUVANANTHAPURAM.

Printed at New India PrintingPress,Khurja,India

AMENDMENT NO. 1 MAY 2002TO

IS 1536:2001 CENTRIFUGALLY CAST (SPUN)IRON PRESSURE PIPES FOR WATER, GAS AND

SEWAGE — SPECIFICATION

(Fourth Reviswn )

( Page 2, clause 6.3 ) — Insert the following sentence in the end of theclause:

‘Pipes cast under controlled cooling conditions need not be heat treated’.

(MTD6)Reprography Unit, BIS, New Delhi, India

AMENDMENT NO. 2 DECEMBER 2003TO

IS 1536:2001 CENTRIFUGALLY CAST (SPUN) IRONPRESSURE PIPES FOR WATER, GAS ANIi

SEWAGE — SPECIFICATION

( Fourth Reviswn )

‘a)

Page 4, clause 11.2(a) ] — Substitute the following for the existing:

Ring test (for pipes centrifugally cast in metal moulds)’

[ Page 4, clause 11.2(b)] —Substitute the following for the existing:

‘b) Tensile test for pipes’

( Page 5, Table under clause 14.2, CO11 ) — Substitute ‘900-1 050’ for‘900-”1 6t3t3’.

( Page 5, table under clause 14.2, CO1 9 ) — Delete and renumber CO1‘10’a:}co] ’9’.

( Page 7, tabfe 4 ) —Substitute thefigure:

FQ

I

following figure for the existing upper

(MTD6)~progmphy Unit, 91S, New Delhi, India

AMENDMENT NO. 3 JULY 2008TO

IS 1536:2001 CENTRIFUGALLY CAST (SPUN) IRONPRESSURE PIPES FOR WATER, GAS AND

SEWAGE — SPECIFICATION

( Fourth Revision)

(Page 5, c/uuse 13.2) — Add the following new clause 13.2.1:

113.2.1 Length other than specified in 13.2 may also be supplied on mutualagreement between the manufacturer and the purchaser.’

(Page 5, c/uuse 13.5, fine 1) — Delete ‘and mass’.

(Page 5, c/ause 13.6, line 1) — Delete ‘and mass’.

(Page 5, clause 13.6, Note) — Substitute the following for the existing:

‘NOTE — Mass for sockets, pipe barrels and flanges are calculated on the basis of the

density of cast iron as 715 kg/dm3.’

(F’a~e 9, Table 6, CO15 to 12) — Delete alongwith their column headings.

(Page 10, Tab/e 7, CO1 5 to 12) — Delete alongwith their columnheadings.

(Page 11, Table 8, CO1 5 to 12) — Delete alongwith their columnheadings.

(Page 12, Table 9, CO1 4 to 12) — Delete alongwith their columnheadings.

(Page 13, c/ause 14.7) — Delete.

(Page 13, clause 15.1.2, line 3) — Insert ‘lined’ between ‘and’ and‘internally’. .

..

.-. l—— ——-., -- . . .. —..- ..- —..—. —___

*

Amend No. 3 to IS 1536:2001

(Page 13, clause 15.1.2) – Add the following at the end of last sentence:

‘and internal lining as required by the purchaser.’.

[Page 14, clause 17.l(d)] — Delete.

I

.

(MTD 6)

ReprographyUnit,BIS,New Delhi,India

2

.