IS 277 (2003): Galvanized Steel Sheets (Plain and Corrugated)

1 Disclosure to Promote the Right To InformationWhereas 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.

2 ! $ ' + - Satyanarayan Gangaram Pitroda Invent a New India Using Knowledge 0 1 ' 5 Jawaharlal Nehru Step Out From the Old to the New 1 + , 1 + Mazdoor Kisan Shakti Sangathan The Right to Information, The Right to Live ! > 0 B Bhart hari N ti atakam Knowledge is such a treasure which cannot be stolen Invent a New India Using Knowledge IS 277 (2003): Galvanized Steel Sheets (Plain andCorrugated) [MTD 4: Wrought Steel Products]IS277:2003~JtFfCh~~~~(x:rrcfr~~ )-~(f 01 TRterur)IndianStandardGALVANIZEDSTEELSHE ETS(PLAINANDCORRUGATED)-SPECIFICATION( SixthRevision)First Reprint JUNE 2007( )ICS 2003 BUREAUOFINI> )BAIIADLJRSIIAIIZAFARMARGNEWl>ELIII11000 2 (.

3 Roup4 WroughtSteelProducts Sectional 'lD4 FOREWORDThis Indian Standard (Sixth Revision) was adopted by the Bureau of Indian Standards. after thedraft finalizedby theWroughtSteel Products SectionalCommitteehad beenapprovedby theMetallurgicalEngineeringDivision standardwasfirst published in1951andsubsequently revised , standard in the lightofexperiencedgained during these years, theCommitteedecided to revise revision, following changes havebeen made:a)AmendmentsnumberI, 2, 3, ) Table I has been modified, interstitial free gradeofbase metalhasbeen ) been ) Clause 2 have been Steel Sheets covered by this standard are intended tobeused forpurposessuch as panelling, roofing,lock forming all testsspecifiedin this standard(chemical/physical/others).

4 The method asspecif:~relevant ISOstandard111ayalso be followed as an alternate for formulationofthis-standard is given in Annex the purposeofdecidingwhether particular requirement of this standard is complied with the final value,observedorcalculated,expressingthe resultofa test or analysis. shall be roundedoffinaccordancewithIS2:1-960 Rules forroundingoffnumerical number of significant places retained in the"oundedoffvalue should be the same as thatofthespecified value in thisstandard. Al\'IENDl\lEN~rNO. 1 JULv 2005 TOIS277:2003 GALVANIZEDSTEELSHEETS( PLAINANDCORRUGATED)-SPECIFICATION(~f)ixt hRevision)( Page1,clause6 ) -Substitutethefollowingfor theexistingtable:Table1 ClassificationofGradesofGP/GCCoilsand Sheets (Clause 6) BaseMetalin ISl079iIs513(I)(2)(3)(4)i)DeepdrawingGPO G radeDDii)Extra deepdrawingOPEDG radeEDDiii)CorrugatedordinaryGCGTade0 NOTES1 ,itmaybemanufacturedfromGrade0ofIS51:'.

5 ( ,lastline)-Substitutethefollowingforthee xisting:'However, bend test shall not be applicable to GC grade of Sheets intended forcorrugation. '(MTD4)1-78 BIS/ND/07 277 : 2003 GALVANIZEDSTEELSHEETS(PLAINANDCORRUGATED )-SPECIFICATION(SixtllRevision){Page1,cl ause6(see )]-Insert the followinggrades in the existing table:SI (cofBaseMetalIS I079/1S513(I)(2)(3)(4)v)OrdinaryOPGrade 0vi)Ordinary-HardGPHG rade0-ii)lockFormingGPLG rade 0(PageI, ) - Insert the following new clause after :';'3 Passivation shallbecarried out on the surface,ifagreed to between theourchaser andthemanufacturer.'.(Page2, ) -Insert the following :~.}

6 5 Ifagreed to between the purchaser and the manufacturer, the gradeof'.coatings 100 and 80 may be used for non-critical applications other than mass of coating in such cases shall be as follows:GradeofMinimumAverageCoatingMini mumCoatingCoatingTripleSpot TestSingle SpotTestg/rrr'g/rrr'(1)(2)(3)10010090808 075 NOTE- For the above grade ofcoating,themandreldiameterfor bend test foradhesionofzinc coating shallbesubjecttomutualagreementbetweenth epurchaserand themanufacturer. IS 277 : 2003[Page2, ,lastsentence( )] -Substitutethefollowing fortheexisting: However, bend test shall not be carried out on Sheets intended for corrugation.

7 '(Page4, )-Substitute the following informal table agreement between the purchaser and themanufacturersheets of other profile,depth and pitch of corrugationmayalso be supplied subject torequiredcondition forimposed load on roofs as IS 875 (Part 2) : 1987(Page4, ,first.'tentence)-Substitutethefollowing fortheexisting:'The numberofcorrugations shall be as per the table given below,dependingonthe widthofthe (Page4,Table5) -Substitutethefollowingtablegivenonpage 3forthe existing:2 IS 277 : 2003 Table5 OverallWidthsandCorrugationsofSheets( ) ofGradeOverallWidthofSheet(mm)(~orrugatl onBeforeAfter CorrugationCorrugation(I)(2)(3)(4)(5).)

8 ; )8A750660ii)10A900 KIOiii)IIA1000910iv)13"A12001110v)14A122 0I 125vi)16A13501220vii)18A15001370viii)20A 16501520ix)8B750680x)10B900830xi)IIB1000 930xii)13B1200I 130xiii)16BJ350J240xiv)18B15001390xv)20B 16501540xvi)10C840720xvii)12()1000875(MT D4)ReprographyUnit, 81S, NewDelhi,India3 AMENtA'""T1' 277 :2003 GALVANIZEDSTEELSHEETS(PLAINANDCORRUGATED )-SPECIFICATION( )(Page3, ) - Substitute the following for the existing:'Galvanizedplain Sheets , corrugated Sheets and coils shall be reasonably flat andfreefrombare spots, pin holes, tears and other harmful ,imperfectionssuch as rough/non-uniform coating, minor dents,water/passivationmarks, etc, may be present at certainportionswhicharenotharmfulfor intendeduse.

9 '(MTD4)ReprographyUnit,8~.New Delhi. India IS 277 :2003 IndianStandardGALVANIZEDSTEELSHEETS(PLAI NANDCORRUGATED)-SPECIFICATION( SixthRevision)I SCOPET hisstandardcoverstherequirementsofplaing alvanized Steel Sheets and strips (coils) and corrugatedgalvanized incutlengthorcoi SUPPLYOFMATERIALT hegeneralrequirementsrelatingto thesupplyofgalvanizedsheetsandstripsshal lconform toIS For the purposeofthisstandard,thedefinition givenin IS 1956 (Part 4)and the following sheetprior referenceinthis text, constitute provisionsofthis the timeofpublication, thisstandard are encouraged to investigatethe possibilityofapplying the most recent editionsofthe standardsindicated below:IS.

10 1992513 : 19941079 : 19941956(Part 4) : 19752629 : 19856745 : 19728910 :191813229:1991 TitleZinc ingot - Specification(fourthrevision)Cold-rolled lowcarbon Steel sheetsandstrips( ]Hot-rolled carbonsteelsheetandstrip(fifthrevision)G lossary of terms relating toironand Steel :Part 4 Steel sheetandstrip(firstrevision)Recommendedp ractice forhot dipgalvanizing on iron andsteel(firstrevision)Methodfor determination of massofzinccoatingon zinc coatedironandsteel acticlesGeneral technical delivery require-ments for Steel andsteel Thebasemetalofplaingalvanizedsheetsandco ilsshall conformto IS 1079orIS 513 as thecasemay not possible to test the base metalbeforegalvanizing,thebase metal may be tested afterstrippingoffthe zinc Forcorrugatedsheets, the becarriedoutbyfirstpicklingthe blacksheets orbycleaningthecold-rolledcoilsinthe line and thendippingthernin a bathof11101":nzincat atemperaturesuitableto produce acompleteanduniformlyadhesivezinccoating (secIS:!))