Disclosure to Promote the Right To Information

Whereas the Parliament of India has set out to provide a practical regime of right to information for citizens to secure access to information under the control of public authorities, in order to promote transparency and accountability in the working of every public authority, and whereas the attached publication of the Bureau of Indian Standards is of particular interest to the public, particularly disadvantaged communities and those engaged in the pursuit of education and knowledge, the attached public safety standard is made available to promote the timely dissemination of this information in an accurate manner to the public.

इंटरनेट मानक

“!ान $ एक न' भारत का +नम-ण”Satyanarayan Gangaram Pitroda

“Invent a New India Using Knowledge”

“प0रा1 को छोड न' 5 तरफ”Jawaharlal Nehru

“Step Out From the Old to the New”

“जान1 का अ+धकार, जी1 का अ+धकार”Mazdoor Kisan Shakti Sangathan

“The Right to Information, The Right to Live”

“!ान एक ऐसा खजाना > जो कभी च0राया नहB जा सकता है”Bhartṛhari—Nītiśatakam

“Knowledge is such a treasure which cannot be stolen”

“Invent a New India Using Knowledge”

है”ह”ह

IS 6913 (1973): Stainless steel tubes for the food andbeverage industry [MTD 19: Steel Tubes, Pipes abd Fittings]

i

IS: 6913-1973

Indian StandardSPECIFICATION FOR

STAINLESS STEEL TUBES FOR THE FOODAND BEVERAGE INDUSTRY

Steel Tubes, Pipes and Fittings Sectional Committee, SMDC 22

Chairman Representing

SHRIJ. G. KESWAM Indian Tube Co Ltd, Calcutta

Members

Smsr S. C. A~A~D Bharat Steel Tubes Ltd, New DelhiSHRI K. C. SsuvAS’rAvA ( A/fernate )

SHRI E. AXANDA RAO Tube Products of India, MadrasSHRIT. SIVASHANKAR( Alternate)

ASSISTANT IXBZCTOR STANDARDS Ministry of Railways( Loco), LUCKNOW

Sx~I D. K. ARORA Jyoti Limited, 13aroda%qtx B. BKHERA Hindustan Steel Ltd, Rourkela

SHRXC. DAS GUPTA ( Alternate)SfiRI D. D. BHUPTANX Indian Tube CO Ltd, Jamshedpur.SHRI B. B. CHAKRAVrSRTI Superintendence Co of India Pvt Ltd, Calcutta

SHRI A. K. SHOME( Alternate)DR R. K. DUBEY National Metallurgical Laboratory ( CSIR ).

Jamshedpur. .

EXIiCUTIVE ENCHNBER, CENTRAL Catral Public Works Department, New DelhiSToam DIVISIONNo. 1

SHRI C. P. GUPTA Zenith Steel Pipes Ltd, KhopoliSHRI K. S. RAt.SAIiRISHNAN( A[ternate )

SHRI T. N. JHA Central Boilers Board, New DelhiSHRIJACOBJOHN Kalinga Tubes Ltd, Calcutta

SHRI AjIT MOHAPATRA ( Alternate)SHRI M. ‘1’. KANSK Direc~orate General of Supplies & Disposals

( Inspection Wing), New DelhiSHRI S. C. KAPUR ( Alternate)

SHRI B. KUMAR Stewarts & Lloyds of India Lttd, CalcuttaSHRI A. N. C.HA~PATY ( Alternate)

SHRI S. MXTTAL Indian Oil Co Lid, BombaySHRXR. K. AIRY ( Alternate)

LT-CDR V. N. MADHAV RAO Defence Metallurgical Research Laboratory,Hvderabad

SHRI P. S. AUAVINDAKSHAN( Alternah ) ‘

I!f+HUIGOPALJ. PATEL Gujarat Steel Tubes Ltd, Ahmedabad

SHRI SHAUESHV. SHAH ( Alternate)I ( Continued ws@sgs 2 )

]@ Copyright 1973

IINDIAN STANDARDS INSTITUTION

)This publication is protc:ted under the Indian Copyright Aet ( XIV of 19s7 ) andreproduction in whole or m part by arv.means except with. written permission of the

/p~~lisher shaIi be deemed tobe an mfrmr3emeBt of copyright under the said Act.

d, 4

ts : 6913 - 1943

( Continuedfrom page 1 )

Members Representing

SHRI N. B. ROYCHOWDHURY Burmah-Shell Refineries Ltd, Bombay SHRI S. L. ARANHA ( Altsrnate )

SXIU J. L. SETH1 Public Works Department ( Public Health Government of Haryana, Chandigarh

SHRI A. N. MEHANDALE ( Alternate ) SHRX S. SRINIVA~AN Hindustan Shipyard Ltd, Visakhapatnam

SHRI M. C. KESAVA RAO ( Altematc ) SHRI R. K. SRWMTAVA, Director General, IS1 (Ex-oflcio Member )

Deputy Director ( Strnc 8~ Met )

Secretary

SHRI P. K. JAIN

Assistant Director (Metals ), IS1

Branch ),

Is: 0913-’1973

Irm!iarzStandardSPECIFICATION FOR

STAIPWESS STEEL TUBES FOR THE FOODAND BEVERAGE INDUSTRY

e 0. FOREWORD

0.1 Thk Indian Standard was adopted by the Indian Standards Institutionon 16 March 1973, after tk draft finalized by the Steel Tubes, Pipes and

+ Fittings Sectional Committee had been approved by the Structural andMetals Division Council.

0.2 This standard has bee?i prepared to assist the users and manufacturersof stainless steel tubes for use in the food and beverage industry.

0.3 In the preparation of this standard assistance has ken derived fromISO/R. 1127-1969 ‘ Stainless steel tubes — Dimensions, tolerances andconventional mass s per unit length’ and ISO/R 2037-1 W 1 ‘ Pipes andfittings — Stainless steel tubes for the food industry’, issued by theInternational Qrganizatim for Standardization.

0.4 For stainless steel milk pipes and fittings reference may be made toH : 3382-1965*.

0.5 For the purpose of deciding whether a particular requirement of thisstandard is complied with, the final value, observed or calculated, expressingthe result of a test or aflalysis, shall be rounded off in accordance withIS: 2-1960?: The number of significant places retained in the rounded offvalue should be the same as ihat of the specified value in this standard.

1. SCOPE

1.1 This standard covers the requirements for welded and wamkss stainlesssteel tubes for the food and beverage industry.

2. SUPPLY (IIF‘MATERIAL

2.1 General requirements relating to the SUPPIYof material shall be as laiddown in IS: 1387-1967$,

-——.—..—-———.*Specificationfw stainlesswed milk pipesand fittings.

tIMe3 fearrounding off numerical values ( rruid ).

$CAeral requirements for the supplyof metallurgicalmaterials($7s/reuition).

3

IS : 6913 - 1973

3. MANUFACTURE

3.1 The steel shall be made by the electric-furnace process or other processc approved by the purchaser.

3.2 The tubes shall be made by seamless or welded process.

3.2.1 Tubes may be furnished either hot mushed or cold finished.

4. HEAT TREATMENT

4.1 All tubes shall be supplied in the heat-treated condition. The he; treatment shall consist in heating the pipe uniformly to 950 to 1 100°C ar then cooling rapidly in air, water or oil.

5. CZIEMICAL COMPOSITION

5.1 The ladle analysis of steel shall conform to one of the grades specific in Table 1.

NOTE - An Indian Standard for the methods of chemical analysis of stainless steel: under preparation. Till it is published, the method of analysis shall be as agreed between the purchaser and the manufacturer.

TABLE 1 CHEMICAL COMPOSITION

GRADE c---------

C Si Mn MLW Max Max

A. @OS0 1.0 2’0

B 0.08 1.0 2.0

C 0*03 1.0 2.0

D 0.08 1.0 2.0

CONSTITUENT, PRRCENT .__-_A-_-___--____

S P Ni Cr MO

‘Max Max

0.030 0’045 9*0-13.0 17.0-20’0 -

0.030 0.045 9.0-13.0 17.0-20.0 -

0’030 0.045 1@5-14.0 16.0-18.5 2.0~3*(

0.030 0.045 10~5-1~0 16.0-18.5 2*0-3*(

5.2 When requested by the purchaser, analysis of one billet per heat or tv lengths offlat-rolled stock per heat or two tubes from each heat shall be mad The chemical composition thus determined shall conform to the requiremen

5.3 If the analysis of one of these test specimens does not conform to t] requirements specified, an analysis of two billets or two lengths of flat-rolb stock or two tubes from the same heat may be made, each of which sh; conform to the requirements specified.

6. DIMENSIONS

6.1 The outside diameters of tubes and thicknesses shall be as given Table 2.

4

IS :x913 - 1973

OUTPIDE DIAMETER

12.7

15.9 19.0 25.4 31.8 38-O 44.5 51.0 57.0 63.5 70.0 76.2 8@9

101.6 1143 133.0 139.7 168.3 193.7 219.1

TABLE 2 DIMENSIONS

( Clabsc 6.1 )

All dimepions in millimetres.

THKXNESS +--- ,

Welded Tubes ‘Seamless Tubes

1.2, 1.6 -

1.6, 2.0 -

1.6, 2.0 -

1.6, 2.0, 2.8 3.2, 3.6 2.0, 2.3 3.2, 3.6 2.0, 23 3.2, 3.6 20, 2*3- 3.2, 3.6 2.0, 2.3 3.2, 3.6 2.3, 2.6 3.6, 4.0 2.3, 2.6 3.6, 4.0 P3, 2.6 26, 4,O 2.3, 2’6 3.6, 40 2.6, 2.9 3.6, 4.0 2.6, 2.9 3.6, 40 2.6, 2.9 4+0,4’5 2.9, 3.2 4.0,*5 2.9, 32 4.0, 4’5 2.9, 3.2 4.0, 4.5 2.9, 3.2 4.0, 4.5 2.9, 3.2 4.0, 4.5

7. TOLERANCES

7.1 Outside Diameter - Two sets of tolerances on the outside diameter save been specified as follows. Depending on his requirements the purchaser hhould specify one of the two sets in his order:

a) f 0.50 percent with a minimum f O-10 mm, and

b) f 0.75 percent with a minimum of f @30 mm.

7.2 wall Thickness - The tolerance on the wall thickness for seamless tubes shall be f 12.5 percent and for welded tubes shall be f 10 percent.

8. X?XNXSH

8.1 Finished tubes shall be reasonably straight and have smooth ends free from burrs. They shall be free from injurious defects and shall have a -Nork- manlike finish.

5

IS: 6913-1973

8.2 For tubes polished cm the inside surface only, the outside surface may haveminor defects removed by grinding, provided the wall thicknesses are notdecreased to less than that specified in 7.2.

8.3 Surface Finishes — The surface finish shall be measured in accordancewith 1S: 3073-1967*. For critical surfaces ( in contact with fwd or bever-age ) & shall be <1 ‘O pm, For other surfaces & shall be <2-5 pm.

Nom — The roughnessof thewelded bead should not exceed 16 PXI.

9. CORROSION RESISTANCE

9.1 If required by the purchaser, th~, pipes shall be tested for corrosionresistance. The method of testand specdieation requirements shaUbe agreedto between. the purchaser and the manufacturer.

10. TENSILE TEST’

10.1 TWO percent of tubes from each batch, with a minimum of two tubesshall be tested in accordance with IS: 18941972t and the material shallconform to the following ~equirements.

Grade Temile $trength Elongation on 5-6.5dSy, MinN/mm~ percent

A, B and C +90-605 30

D 510-705 30

11. HYcmu’+nm CONDITIONS

11.1 Proper care shoul$ be t~en tQsee that non-f~moys metals and alloysthat are joined with st~mle~ssteei tubes during fabrication do not leave anyhadul deposits fiectmg @her the -Sembly or the food or beverage beingmanufactured.

12. MARKdW

12.1 Each pipe shall be rmrked with the following details:

a) C%ade,b) Outside diameter,c) %’hicknew, and

d) Length of the tube (it is not usual to mark the length and suppl!can be in random lengths).

*Assesamen t of surface roughn-.

tlvletbd for t~dle t~tingdfsta tubes (fist rdion ).

6

IS: 6W3 -1973

12.1.1 The pipes may also be marked with the 1S1 Certification Mark.

Nom — The use of the ISI Certification Mark is governed by the protilons of theIndian Standards Institution ( Certification Marks) Act and the Rules and Regulationsmade thereunder. The 1S1 Mark on products covered by an Indian Standardconveys the assurance that they have been produced to comply with the requirementsof that standard under a w$-deilned system of inspection, testing and quality contkolwhich is devised and supcmnsed by 1S1 and operated by the producer. 1S1 marked

%ther safeguard.roducts are also continuously checked by ISI for conformity to that standard as a

Details of conditions under which a licence for the use of the 1S1Certification Mark may be gr~ted to manufacturers or processors, may be obtainedfkom the Indian Standards Ins@tution.

I

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