277 - Galvanised Steel Sheets
277 - Galvanised Steel Sheets
277 - Galvanised Steel Sheets
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Indian Standard
(Sixth Revision )
ICS 77.140.50
0 BIS 2003
BUREAU
MANAK
November 2003
OF
BHAVAN,
INDIAN
STANDARDS
9 BAHADUR
SHAH
NEW DELHI
110002
ZAFAR
MARG
Price Group 4
FOREWORD
This Indian Standard (Sixth Revision) was adopted by the Bureau of Indian Standards, after the draft finalized
by the Wrought Steel Products Sectional Committee had been approved by the Metallurgical Engineering
Division Council.
This standard was first published in 1951 and subsequently revised in 1962, 1969, 1977, 1985 and 1992. While
reviewing this standard in the light of experienced gained during these years, the Committee decided to revise the
standard. In this revision, following changes have been made:
a) Amendments number 1, 2, 3, 4 and 5 have been incorporated.
b) Table I has been modified, interstitial free grade of base metal has been included.
c) Clause 7.1 has been modified.
d) Clause 2 have been updated.
Galvanized steel sheets covered by this standard are intended to be used for purposes such as panelling, roofing,
lock forming etc.
For all tests specified in this standard (chemical/physical/others), the method as specified in relevant 1S0 standard
may also be followed as an alternate method.
The composition of Committee responsible for formulation of this standard is given in Annex A.
For the purpose of deciding whether particular requirement of this standard is complied with the final value,
observed or calculated, expressing the result of a test or analysis, shall be rounded off in accordance with
IS 2:1960 Rules for rounding off numerical values (revised.). The number of significant places retained in the
rounded off value should be the same as that of the specified value in this standard.
IS 277:2003
Indian Standard
GALVANIZED STEEL SHEETS
(PLAIN AND CORRUGATED) SPECIFICATION
(Sixth Revision)
1 SCOPE
Title
513:1994
1079:1994
2629:1985
revision)
6745:1972
8910:1978
13229:1991
SI
Type
Designation
Grade Reference
of Base Metal
Is lo79/ls 513
(2)
(3)
(4)
No.
3 TERMINOLOGY
(1)
Deep Drawing
GPD
Grade DD
ii)
GPED
Grade EDD
iii)
Interstitial Free
GPIF
Grade IF
iv)
Corrugated Ordinary
GC
Grade O
IS 277:2003
7 ZINC COATING
8 BEND TEST
S1
Grade of Zinc
Coaling
Thickness
No.
(2)
(3)
8.2 Requirements
i)
200
ii)
220
iii)
275
iv)
above 1.0 mm
350
(1)
NOTES
9 COATING TEST
SI
No.
Grade of
Coating
Minimum Average
Coating Triple
Spot Test
Minimum Coating
Single Spot
Test)
~m,
4M2
(1)
(2)
(3)
(4)
i)
600
600
510
ii)
450
450
380
iii)
350
350
300
iv)
275
275
235
v)
220
220
190
vi)
200
200
170
vii)
180
180
155
viii)
120
120
100
10 RETESTS
I) Mi~imom
individual
IS 277:2003
SI
Grade of
Coating
No.
Over
Over
Over
Over
Over
Over
2.3
1.6
1.25
1.0
0.8
up to
up to
up to
up to
up to
Over
0.5
up to
2.3
1.6
1.25
1.0
0.8
Over
0.4
up to
0.5
Over
0.3
Over
0.22
Over
0.16
up to
up to
up to
0.4
0.3
0.22
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10)
(11)
(12)
(13)
i)
600
10
11
12
ii)
450
10
11
iii)
350
iv)
275
v)
220
vi)
200
vii)
180
viii)
120
II
given in 8,2 and 9.2, two more set of test samples shall
be taken for the specific test requirements from the same
lot.
10.2 If any of the retest sample fails to meet the
requirements of this standard, the entire batch of the
sheets represented by the sample shall be deemed as
not conforming to the standard.
a) Length
b) Width
mayalsobesuppliedsubjectto themutualagreementbetween
the purchaserandthe manufacturer.
13.1.1 Unless otherwise agreed, the internal nominal
diameter of sheet supplied in coil shall be 450, 510 or
610mm.
13.2 Tolerances
12 MASS
13.2.1 Length
13.2.3 Width
in any combination
IS 277:2003
Table4
SI
No.
Type of
Material
Order of Calccrlation
Method of Calculation
Number of Numerals
in Resrdtmrt Value
(2)
(3)
(4)
(5)
(1)
Sheet
i)
ii)
Coil
Total mass
Integral number of kg
NOIES
I Nominal mass of single sheet shall be calculated by calculating the volume of the sheet and multiplying the same with density of
sheet (density 7.85 glcrn) and rounding the same to 4 effective figures.
2 Mass of the coating shall be calculated by multiplying the surface area of the single sheet with indicated nominal coating mass
(ghn) as shown for triple spot test (see Table 2).
3 for calculation of corrugated sheet mass, the width before corrugation considered while calculating the area.
13.2.4 Thickness
The tolerance on thickness of sheet and coil shall be
according to IS 1079 or IS 513 as applicable.
WIDTH
sl
No.
Number of
Corrugation
Grade
&
(1)
Grade
A
B
Depth of
Corrugation
mm
17.5
12.5
Pitch of
Corrugation
mm
75
75
(2)
(3)
Before
Corrugation
mm
Atler
Corrugation
mm
(4)
(5)
i)
750
660
ii)
10
900
810
iii)
11
1000
910
iv)
13
1200
1110
v)
750
680
vi)
10
900
830
vii)
11
1000
930
viii)
13
1200
1130
IS 277:2003
15.1.1 The material may also be marked with the
Standard Mark.
ET+
DEPTH
PITCH 75mm
14.2 Tolerances
15 MARKING
15.1 Manufacturers name or trade-mark, grade of
S1 No.
Dimensions
(1)
(2)
O
ii)
iii)
Depth of corrugation
(3)
+ 2.5 mm
Pitch of corrugation
5mm
+ 25 mm
1)Average of 4 measurements.
Tolerance)
IS 277:2003
ANNEX A
(Foreword)
COMMITTEE COMPOSITION
Organization
DRT. MOKHEIUEE
(Chairman)
%U R. P. VARSHNEY
SHMR. K. SETH
SHMK. K. GUPTA(Alternate)
Swu V. K. GOEL
SHRIM. L. AHOJA(Ahernale)
SHRIB. VAIDYNATHAN
Smu R. D. B. SINGH
(Ahernute)
SsmrDEVINDER
KUMAR
Smt B. D. GHOSH
SHRIS. K. GANGULY
SHRIB. S. RANA(Alterna(e)
SHRIALOKNAYAR
SrrruR. PRABHAKAR
(Alternate)
Smu KAPILKApCOR
SHM B. R. BAPAT
DRS. R. MEDULAmA
SHSU
JAYANATA
KUMAR
SAHA(Ahernafe)
Smu ARVINDJ. BHIDE
SsrruP. U. C. AYVER(Alternate)
Smu M. K, MAHESHWARI
(Alternafe)
SHRSA. K. MISHRA
DRS. K. GOPTA
SHRIS. K. HEGDE(Alternate)
BHASKAR
ROY
Srrrrr
(Alternate)
Smu SUBHABIUTA
SENGUPTA
DR S, B. SARKAR
(Alternate)
SHRIK. G. N. MOHAN
JoawrCONTROLLER
(CQA MET)
(Alternate)
SQAE (METALS)
RepreSentatiVe
JOINTDIRECTOR
(CHEMCAL)
JOINTDIRECTOR
(1&L) (Alternate I)
DEPUTY
DIRECTOR
(MET-3)(Alternate 11)
SHIOS. S. SAHA
SHSU
A. C. R. DAS(Alternate)
SHRJC. H. SHARMA
(Alternate)
SHRIK. R. SSONIVASAN
DRS. TARAFDAR
(Afterrrate)
SHIUR. GOPALKRISHAN
SHRIG, TIWARI
Smo D. B. SRIVASTAVA
(Alternate)
SHRIS. K. KOTBAGHI
Smu A. S. MATHOR
(Alternate)
SmrrG. B. PRADHAN
SHIOA. K. CHAUDHORI
(Alternate)
SHRIB. V. S. PANDIT
REPRESENT.4TrvE
DRSANAK
MISHRA
(Alternate)
SHRIM. PRASAD
JHA
SHRISUDHAKAR
(Alternafe)
DRB. K. PANIGRAHI
SHRIS. SISODIA
(Alternate)
SHWH. K. ARORA
SHRIM. S. UNNINAYAR
SHWR. P. BHATIA
SHRI~. D. KHERA(Alternate)
(Continued on page 7)
IS 277:2003
(Continuedfrom
page 6)
Representative(s)
SHIUARUL JAYACHANDWN
SHRIS. J. MOHAN
(Alternate)
Stnu R. K. MALHOTKA
SHIUR. K. VERMA (Alternate)
SHM J. D. HARIDAS
SHRIB. R. GALGALI(Alternate)
Organization
Drr M, D. MAHESHWAIU
SHRIS. K.
DR S.
SHRIM. C.
SADHU
(Alternate)
SENGUPTA
DR. P. C. CHOWDHORY
(Alternate)
CHAKRABORTY
.SHRIN. MITRA
[J.P.)
[11S Directorate General
SHIUDEEPAK
JAIN
Joint Director (MTD), BIS
Bureau
of
Indian
Standards
BIS isastatutory institution established under the Bureau oJIndian Standards Act, 1986 to promote harmonious
development of the activities of standardization, marking and quality certification of goods and attending to
connected matters in the country.
Copyright
BIS has the copyright of all its publications. No part of these publications may be reproduced in any form
without the prior permission in writing of BIS. This does not preclude the free use, in the course of implementing
the standard, of necessary details, such as symbols and sizes, type or grade designations. Enquiries relating to
copyright be addressed to the Director (Publication), BIS.
Review
of Indian Standards
Amendments are issued to standards as the need arises on the basis of comments. Standards are also reviewed
periodically; a standard along with amendments is reaffirmed when such review indicates that no changes are
needed; if the review indicates that changes are needed, it is taken up for revision. Users of Indian Standards
shou Id 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.
This Indian Standard has been developed from DOC: No. MTD 4 (4374).
Amendments Issued Since Publication
Amend No.
Date of Issue
Text Affected
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