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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.

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“Invent a New India Using Knowledge”

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“Step Out From the Old to the New”

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“The Right to Information, The Right to Live”

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“Knowledge is such a treasure which cannot be stolen”

“Invent a New India Using Knowledge”

है”ह”ह

IS 1568 (1970): wire cloth for general purposes [CED 55:Sieves, Sieving and other Sizing Methods]

Gr 2

IS : 1568 -1970(Reaffirmed 2008)

Indian StandardSPECIFICATION FOR

WIRE CLOTH FOR GENERAL PURPOSES

( First Revision)

Sixth Reprint SEPTEMBER 2007( Incorporating Amendment No.1)

UDC 621.778.57

<0 Copyright 1975

BUR E A U OF I N D I AN S TAN DAR D SMANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG

NEW DELHI 110002

May 1971

IS I 1568 • 1970

Indian StandardSPECIFICATION FOR

WIRE CLOTH FOR GENERAL PURPOSES

( First Revision)

Sieves, Sieving and Other Sizing Methods Sectional Committee, BDG 19

ChairmanDR K. N. MATHUR

Clo National Physical Laboratory,Hillside Road, New Delhi 12

Members Rlpresent;ngSHRI S. N. ARORA Shalimar \Vires & Industries Ltd, Uttarpara

SHRr D. N. CHAKRABORTY ( Alternate)SHRI S. K. BAJORIA Krishanlal Thirani & Co Ltd, Calcutta

SHRI S. K. GANDHI ( Alternat«)SHRI N. N. BANERJEE All India Instrument Manufacturers and Dealers

Association ( Bombay Region )SHRI R. R. CHAKRABORTY National Instruments Ltd, CalcuttaDR I. C. Dos M. PAlS CUDDOU Central \Vater & Power Commission, New Delhi

SHRI S. V. SURYANARAINA ( Alternate)SHRI H.uCHAND SINGH The Indian Steel & \\iire Products Ltd, Jamshedpur

SHRJ R. R. KAPUSH ( Alternate)DR R. R. HATnANOADI The Associated Cement Companies Ltd, Bombay

DR M. K. GHAR-PUllEY ( Alternate)JOINT DIRECTOR, R.ESEARcH Ministry of Railways

( F. E.), RDSODEPUTY DIRECTOR, RESEARCH

(F. E.), RDSa ( Altemat,)SHR.I D. S. JOSHI Hindustan Boilers, BombayLT-COL R. V. N. KADAMBl Ministry of Defence ( H. & D )

SHRI N. MOHAN RAo ( Alternate)SHR.I CHANDRAKANT L. KHAGRAM All India \Vire Netring Manufacturers' Association,

BombaySHRI V. KRISHNAMOORTHY Directorate General of Technical DevelopmentSaRI R. N. MALLICK Directorate General of Technical DevelopmentSHRI H. M. l\.fARWAH Hindustan \Vire Netting Co Ltd. Bombay

SHRt G. H. ~1ARWAH (Alternate)SHRI D. K. MEHTA Tara-Robins-Fraser Ltd, JanlShedpur

~HRI l\-1. H. RAO ( Alltrnate)

( Continued on page2 )

B II REA II () FIN I) I A N S rr A N I) A R I) S~1 ;\ N1\K HIIAVAN. 9 B1\II1\I)IIR ~ II1\II / t\ I !\ R M1\ R( J

NLW l)LLIlI I IO()O~

18.1_-1970

All India Instruments Manufacturen and DealenAssociation ( Delhi Region )

lUp,u-'National Physical Laboratory ( CSIR ). New DelhiCentral Board of Irrigation at Power, New DelhiNational Test House, CalcuttaThe Tata Iron at Steel Co Ltd. JatBIbedpurDefence Production Orpniziation (Ministry or

Defence)SHIll K. C. MISRA (AII,,,uII,)

SHIn K. K. SENGUPTA Hindustan Steel Ltd. P. O. DbanJarSmll A. K. SEN (AllmuJI')

SHIll P. N. SOOD

( C,,,liuIdjrotl& /Jill' 1)

MmabnlSHIU PREM PRAKASHSHRI R. RAJARAMANSHRI E. K. RAMACHANDJlANDR B.RAO5H"IJ. R. SAOHDEVA

SHRI S. R. T ALPADJ!, (Alt,f1U1t' )SHRI P. V. SUBBA RAo The Andbra Scientific Co Ltd, Maaulipatam8ml K. C. TOIHNIWAL All India Instruments Manufacturers and Dealers

Association ( Calcutta Region)Associated Instrument Manufacturen (India) Private

Ltd, New DelhiSHRI H. C. VERMA

SHRJ A. V. A. SHASTRI ( AIUnt4t, )SHRI D. AJlmA SIMHA, Director General, lSI ( Elt-offieio Mnnber )

Director ( Civ E.p )

SterllarySHR.l VINOD KUMAR

Assistant Director ( Civ Engg)t lSI

2

IS I 1568 • 1970

Indian StandardSPECIFICATION FOR

WIRE CLOTH FOR GENERAL PURPOSES

( First Revision)

o. FOR E WORD

0.1 This Indian Standard (First Revision) was adopted by the IndianStandards Institution on 19 December 1970, after the draft finalized by theSieves, Sieving and Other Sizing Methods Sectional Committee had beenapproved by the Civil Engineering Division Council.

0.2 With the increasing use of wire cloth as mosquito-proof screens, fly­proof screens and for many other purposes, manufacture of wire cloth isdeveloping at a rapid rate. There has been, however, wide variation inthe quality of material, methods of manufacture and of sizes, which hasmade wire cloth and screens unsuitable for particular purposes. Thisstandard was published in 1960 in order to give guidance to the wire clothindustry. The Sectional Committee responsible for this standard has nowrevised it in the light of the experience gained during the last decade. Inthis revision requirements of chemical constitution of wires has beendeleted. Crimping of warp and weft wires has been made optional. Notolerance has been specified for the length as it was not considered neces­sary. Several permissible diameters of wire have been specified for eachaperture size of wire cloth. The method of designating the wire cloth nowincludes mention of diameter and material of the wire used in the manu­facture of the cloth.

0.3 This standard contains clauses 3.2 and 3.3 which call for agreementbetween the purchaser and the supplier at the time of placing orders.Clause 5.1.1 permits the purchaser to use his option for selection of thelength and width of the wire cloth to suit his requirements, clause 4.1permits the user to specify rectangular apertures and clause 9.1 requiresthe purchaser to specify the packing.

0.4 In the formulation of this standard due weightage has been given tointernational co-ordination among the standards and practices prevailing indifferent countries in addition to relating it to the practices in the field inthis country. These considerations led the Sectional Committee to derive

3

IS I 1568 • 1970

assistance from the following publications:INDIA. MINISTRY OP SUPPLY. Galvanized wire 35-B standard

specification for brass or bronze woven wire gauze or cloth (otherthan the test seives ), 1947.

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

1. SCOPE

1.1 This standard lays down the mmimum requirements of material,dimensions and construction of woven wire cloth used for general purposes.

1.2 This standard does not cover wire cloth used for test sieves.

2. TERMINOLOGY2.0 For the purpose of this standard, the following definitions shall apply.

2.1 Woven Wire Cloth - A cloth produced by weaving wires to formuniform square apertures ( see Note under 4.1 ).

2.2 Aperture Size - The width of the clear space between successivewires measured at the centre line of the aperture.

3. WIRE

3.1 The wire used in the manufacture of the cloth shall be well and cleanlydrawn free from scale, inequalities, splits, etc, of circular cross-section andof uniform ductility throughout to avoid hard lumps or soft spots in thefinished cloth.

3.2 ~Iaterial of Wire - The wire used in the manufacture of the clothsha 11 be of brass, bronze, mild steel, aluminium alloy or plastics. Specifica­tions for the material and protective covering on the wire, if any, will beagreed upon between the purchaser and the manufacturer.

3.3 Diameter of Wire - The recommended diameters of wire for eachapci ture size is given in Table I.

~OTE - Deviations in the diameter of wire may be permitted by mutul agreementbetween the purchaser and the manufacturer provided the diameten 10 selected Call inthe R40 series of preferred numbers in IS : l016.1967t.

-Rules for rounding off numerical values ("uis,d ).t Preferred numbers (first "visioll ).

4

IS : 1568 • 1970

TABLE 1 DIMENSIONS OF WIRE CLOTH FOR GENERAL PURPOSES

(Clawes 3.3, 5_1, 5.2.2.1, 5.2.2.2, A-1.2 andA-2.1)

AVERAGE ""'IDrn ~IAXIMUM MA.~MUU

OP APERTURE PERMISSIBLE PERMISSIBLEVARIATION VARIATION

IN AVERAGE IN INDIVIDUALAPERTURE SIZE ApE.RTURE SIZE

percent percent

1'70 rom 1)-40" ± 10 + 201'18"1'00 H J

850 microns 1710"bOO" J ± 10 + 30

500425

"355

" 1300

" I250 I

" r ± 15 +40212" I

180 ., I150

" J

NOMINAL DtAlf!'!'EROP WlllB

DUD

0'32,0'4,0- 56,0·80'25,0' 32,0-45,0'63,0-710'25,0'32.0'41.0'45,0'56,0-630'22,0'28,0'36,0'5,0'56

0'2,0'25,0'32,0-45,0-50,0·560'18,0-25,0-32,0·450'16,0'22,0'28,0'40-14,0'2,0-25,0'32,0-360'14,0'2.0'25,0·28

0-125,0· J8,0·22,0-250.112,0-16,002,0°25

0'1 0°140-160-20°1:0-125,0°14,0-16,0-180-08,0-112,0-125,0·14­0'071,0.1,0°112,0.125

4. CONSTRUCTION

4.1 The cloth shall be regularly woven with a number of equally spacedparallel wires in both warp and weft directions to produce uniform squaremeshes or openings i se« Note). The wire cloth shall be properly salvedgedby one or more wires in each edge.

~OTE - Rectangular apertures may also be used for which the user win separatelyspecify the di mensrons and tolerances.

4.2 Crimping of wires may be done, where necessary, to facilitate construc­tion and to minimize distortion of apertures. ~

5. DIMENSIONS A.ND TOLERANCES

5.1 DiJDensions - The dimensions of wire cloth shall be in accordancewith Table 1.

5.1.1 The length of the wire cloth shall be 15 m or 30 m and the width300 mm, 450 mm, 600 mm, 900 mm or 1 200 mm. The length and thewidth shall be specified by the purchaser.

5

IS I 1568 • 1970

5.2 Toleraace.

5.2.1 Tolerantl on Width of tlu Cloth - A tolerance of :I: 5 mm shall beallowed on the width of the cloth as specified in 5.1.1.

5.2.2 TolertJnce on Width ofAperturl5.2.2.1 Toleranc« on alJeragl aperture - The average or the width! of all

measured apertures (sel Appendix A) shall not depart from the nominalaperture by more than appropriate tolerances specified in Table 1.

5.2.2.2 Maximum tolerance - No individual aperture shall exceedthe nominal aperture by more than the appropriate tolerances specified inTable 1.

6. DESIGNATION

6.1 The wire cloth shall be designated by its nominal aperture width anddiameter of the wire in rnillimetres or microns as the case may be followedby the material of the wire and the inscription C wire cloth J.

Example:a) 1·40 X 0-710 mm mild steel wire clothb) 600 X 400 microns phosphor bronze wire cloth

7. SAMPLING AND INSPECTION

7.1 One roll from every five rolls of wire cloth delivered shall be taken atrandom and a sample with a minimum length of 600 mm shall be cut fromthe entire width of the roll for inspection and test.

7.2 The wire cloth selected in accordance with 7.1 shall be inspected andtested for the requirements laid down in this standard.

8. REJECTION

8.1 If any sample fails to comply with the test the whole lot represented bysuch a sample shall be rejected.

9. PACKING

9.1 The wire cloth shall be wrapped in kraft paper and thereafter packedas desired by the purchaser.

10. MARKING

10.1 Each package shall be clearly marked with the following information:a) Wire cloth designation ( sle 6 ),b) Width and length, andc) Manufacturer's name or trade-mark.

6

IS I 1568 • 1970

10.2 The product may also be marked with Standard Mark

10.2.1 Ihe use of the Standai d Mark I~ governed by the provrsrons of theBureau of lndran Standai ds Act. 1986 and the Rules and Regulations madethereunder The dctailv of conditions under which the licence for the use ofStandard Malk mav be gl anted to manufactures or producers may be obtainedft 0111 the RUI call of Indian Standards

APPENDIX A(Clause 5.2.2.1 )

METHOD OF EXAMINATION OF CLOTH

A-I. APERTURE WIDTHA-I.I Average Aperture Width - To determine whether the wire clothcomplies with the requirement specified in Table 1, the total number ofapertures measured in each direction shall be not less than those given inTable 2. The measurements shall be made in ten or fifteen fields( Jet Table 2 ) as the case may be, so chosen that no two fields are crossedby the same wire. Diagrams of masks suitable for defining the fieldsof measurement are illustrated in Fig. 1.

DIRECTIONOF WIR!S

DIRECTION......-'~H--4~OF WIRES

DIRECTIONOF WIRES

.....--- 165 mm 165 mm ----4-..FIG. 1 MAIK. .OR DEFINING THE FIELDS OF MUSUJUtMU1T

7

IS I 1568. 1970

A-l.2 Measurement for Determination or Maximum Variation inIndividual Aperture - To determine whether the wire cloth complieswith the requirements specified in Table I, it shall be examined across twodiameters, one across the warp and the other across the weft.

A-2. WIRE DIAMETER

A-2.1 To determine whether the wire diameter complies with the require­ment specified in Table 1t ten consecutive wires shall be measured in eachdirection in each field.

TABLE 2 NUMBER OF APERTURES TO BE MEASURED

( Claus« A-l.1 )

NOMINAL Ap2RWRE No. OF ~1INIWUM NUMBER OF CoNSECUTIVEOP WIllE CLOTH FIELDS APERTURE TO BE MEASlJRt:.D IN

EACH DIRECTION

r- -A-~

In Each In AllField Fields

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

1-70 mm 10 5 50

1·40 " 10 o 601'18 " 10 8 801-00 " 10 9 90850 micron 10 10 100710 .t 10 12 120600 " 10 15 150500 " 10 15 150425

" 10 20 200355

" 10 25 250300 JJ 10 30 300250 " 10 30 300212

" 15 20 300180 " 15 20 300150 It 15 25 375

8

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