IS 277 2003 galvanized steel sheets.pdf

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S277:2003
7G)と万
Gi9??(?a?id?dy)-食它
tot Yerr
Indian Standard
GALVANIZED STEEL SHEETS
PLAIN AND CORRUGATED) -SPECIFICATION
(Sixth Revision)
ICS.77、140.50
C BIS 2003
BUREAU AN STANDARDS
MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG
NEW DELH1 02
ovember: 200
Price Gr
Wrought Steel Products Sectional Committee, MTD 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 Commitee had been approved by the Metallurgical Engineerin
Division Council
This standard wasfirst published in 1951 and subsequently revised in 1962, 1969, 1977, 1985 and 1992. While
reviewing this standard in the light of experieced gained during these ears, the Committee decided to revise the
standard. In this revision, following changes have been made:
a) Ammendments 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
dock forming etc
For all tests specified in his s anda chm p her the method as specified in relevant ISO 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,
bserved or calculated, expressing the result of a test or analysis, shall be rounded off in accordance with
IS 2: 1960rules 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.
IS277:2003
Indian Standard
GALVANIZED STEEL SHEETS
(PLAIN AND CORRUGATED)-SPECIFICATION
(Sixth Revision
I SCOPE
3.4 Thickness of Sheet -Thickness of hot-rolled oi
This standard covers the requirements of plain
cold-rolled sheet in cut length or coil form
galvanized steel sheets and strips(coils )and corrugated 4 SUPPLY OF MATERIAL
galvanized sheets
The general requirements relating to the supply of
2 REFERENCES
galvanized sheets and strips shall conform to IS 8910
The following standards contain provisions which 5 MANUFACTURE
through reference in this text, constitute provisions o
this standard. At the time of publication, the editions
5.1 The base metal of plain galvanized sheets and coils
indicated were valid All standards are subiect to shall conform tois 107 or is 513 as the case may be
revision and parties to agreements based on this 5.1.1 When it is not possible to test the base metal
standard are encouraged to investigate the possibility
of applying the most recent editions of the standards
before galvanizing, the base meta] may be tested after
indicated below:
stripping off the zinc coating.
5.1.2. For corrugated sheets, the maximum phosphor
content may be 0.09 percent
209:1992
Zinc ingot-specification (fourth
shall be
by first pickling
the black sheets or by cleaning the cold-rolled coils in
513:1994
Cold-rolle
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