2 = Indd ia In iann Standard
V
SPECIFICATION FO FOR R
j
STRUCTURAL STEEL (STANDARD QUALITY
(Fifth Revision) Fifth Repri Reprint nt JUNE 1986 (Incorporating Amendments N o. I to 3)
I
UDC 669’14~O1&292
E.c.G~IF3PAR~I MAD
A
0 Copyrlghf 1 9 7 9 STANDARDS INSTITUT INSTITUTION INDIAN STANDARD MANA MA NAK K UH UHAV AVAN AN,, ~ BA BAHA HADU DUR R SH SHAH AH ZA ZAFA FAR R MA MARO RO NEW DELHI 110002
Gr4
April 1*7k
IS: 226- 197$
CN\
Indian Standard
‘ -I . ..
\~
~SP~WiCATION FOR STRUCTURAL STEEL (STANDARD QUALITY)
(Fifth Revision) Wrought Steel Products Sectional Committee, SMDC 5 Chairman DR U.
Representing
Modella Steel and Alloys Ltd, liombay
N. BHRANY Members
Stoat S~ut
E. ABRAHAM
M. ANJANEYULU
Association of Indian Engineering Industry, Calcutta & Allied Machinery Corporation Ltd. Durgapur
Mining
Sisat D. P. SANYAL (Attereate) Sans N. C. BAocrn National Test House, Calcutta Metallurgical and Engineering Consultant ( India) SHRI A. K. BANERJEE Ltd, RancId Saxi B. N . Ssso~a (Alternate ) SaRI S. BANERJF~ Steel Rerolling Mills Association of India, Calcutta Guest, Keen, Williamt Ltd, Howrah SHRI S. K. BARr Sims A. RoY CHOWnHURY (Alprnate) Da S. S. BuATNAGAR National Metallnrgical Laboratory ( CSIR),
Jamshedpur Ssoax Y. P. S. Bt~itNoi 1~okaro Ste~sl Ltd, Bokaro Steel City Sititti. C. E,nty ( Alierch Tata Iron & Steel Co Ltd, Jamshedpur SHRI P. K. CttAxstA ~ARi7Y Stint M. C. KUMARASWAMY (Alternate) SHtu G. CUAYTS~RJe.E Hindustan Steel Ltd, Durgapur Sisni K. Z. MAYHEM (Alternate) Stoat P. K. CH~ATTERJEE M inistry of Defence (DGI) Stoat M. M. GUPTA (Alternate) Dn N. S. DATAOt Hindustan Steel Ltd, Rourkela Snax K. S. Surnis (Alternate)
(Coehmudou~qe2)
0
Cofrymight 1979
IS: 226 -1975 (Corutinuedftom page I
Members
Representing
M. G. DEWAN Tinplate Company of India Ltd, Golmur, S. BALASHANKAIS (Alternate) DIREcTOR (M & C) Ministry of Railways MAJ-GEN Stoat
CHEMtST & METALLURGIST, CISITTARANJAN LocoatorIVE WORKS ( Alternate) SaRI A. K. CubA
lntpecsion Wing, Directorate Ditposals, New Delhi
General of Supplies &
SssRs P. C. MUSTAFI ( Alternate JOINT DItsEc~sOn STANDA RIJS Ministry of Railways X X AG ON Jot~r l)mnEcroH IstoN &
~
STEEL ) ( Alternate V. C. KA~nYer
Special Steels l.td, Bombay Sisut S. S. NI UJIANJAN ( Alternate SHut M. N. KLIANNA Hindustan Steel Ltd, llhilai Smut K. C. SuM ( Alternate) SaRI K. M. KIHSHNAN Iron and Steel Control, Calcutta Du D. M. LAm tItAN! Indian Iron & Steel Co Ld, Burnpur Snut ‘F . 1K . DATTA ( .4lternate Sus~ P. LAX~!INARAYANA Hindustan SI’ipvard Lsd, Visakhapalnans Indian Steel and Wire Products Ltd, Indranagar StiRs R. C. MAMA JAN Situs AVTAR St~ott ( A jternate ) Metal Box Cu of India Ltd, Calcutta D im S. S. MALUOTRA SuEt K. R. NAV.ASIMtIAN ( Alternate Smsa D. Y. MoGIIE Directorate General, Ordnance Factories (Ministry of Defence), Calcutta SHut D. S~e Alternate) Sisut R. H. G. RAM Mukand Irots & Steel Workt Ltd, Bombay Siius S. A. NIGAM (Alternate) Indian Institute of Metals, Calcutta Sisisi D. V. REDDI Joint Plant Consmittce, Calcutta Sst HI N. SEN Roy SHRI D . SEINIVASAN (Alternate) SuEs R. K. SETh Industrial Fasteners’ Astociasion of India, Calcutta Da S.J. SHAH (Cotton System) Sectional Spinning Machinery
TECtoNIC AL ADVYSER (BOILERS
Sasts K. S. VAIDYANATISAN
Stoat G. VLEKA’rR~WARLV Snus L. S. IIItAUTRAYHA Sassi C. R. RAMA RAO, Director ( Struc & Met
)
Committee, TDC 30, ISI Central Boilers Board, Ministry i)evelopment, New Delhi
of Industrial
M. N. Dastur & Co ( Pvt ) Ltd,Calcutta Ministry of Defence ( K & D
RAO ( Alternate) Director General,
IS! (Ex-~fficio Member)
Secretary
Sisut SHANi’I SWARtTP Assistant Director
( Metals )
,
IS!
IS: 226. 197$ ZW
-
Indian Standard SPECIFICATION FOR
STRUCTURAL STEEL (STANDARD QUALITY)
(Fifth Revision) ORD 0. FOREW 0.1 This Indian Standard (Fifth Revision) was adopted by the Indian
Standards Institution on 15 January 1975, after the draft finalized by’ the Wrought Steel Products Sectional Committee had been approved by the Structural
and Metals Division Council.
0.2 This standard was first issued in 1950 in response to arequest made to the Steel Advisory Committee of the Government of India by steel It was revised in 1955, 1958, 1962 manufacturers in the cou~ary. and 1969. 0.3 In this revision, provision has been made for removal of surface defects by chipping or grinding as is being followed in many other countries. Further, it has been made clear that this standard covers structural steel ( standard quality ) intended to be used for all types of structures including those sttbjected to dynamic loading and where fatigue, wide fluctuation of stresses, reversal of stresses and great restraint are involved as for example in crane gantry girders and road and rail bridges. Steel specified in this stan atd is suitable for welding provided that the thickness of material (ices not exceed 20 mm. When the material conforming to this standard i: over 20 mm thick, special precautions may be required in case the material is to be welded (see IS: 823~l964*). 0.3.1 The designations of steels have been aligned with the revised designations given in IS: I 762 (Part I)-1974t. However, the old designattons are also given in parenthesis lbi~ information. 0.4 The steel products conforming to the requirements of this specificatton can be rolled from the billets conformitig to IS 2830-1975 or IS : 69l4-1973§. Code o f p r o c e d u r e f o r manual metal a rc welding of mild s t e e l . tCode for deaignation of steels: Part I B a s e d on l e t t e r s y m b o l s (first revisicE), Specification for carbon steel billets, blooms and s!abs for re-rolling into structui,J s t e e l ~standard quality) (Jirs: revision). ISpecification for carbon steel cast billet ingot. for re-rolling into structural steel st adard qisaility).
3
18:226-1975 0.5 F o r th e purpose of deciding whether a particular r e q u i r e m e n t of t h i s s t a n d a r d i s complied wi t h, t h e f i n a l value, o b s e r v e d or calculated, expressing th e r e s u l t of a t e s t or analysis, shall be rounded off in accordance with IS : 2 ~ l 9 6 0 * . The number of s i gn i f i ca nt places retained i n t h e rounded o f f v a l u e should be the same as that of the specified value
in this standard. 1. SCOPE 1.1 This standard c o v e r s t h e requirements f o r quality) plate, sections and bars, etc, d e s i g n a t e d
mild s t e e l (standard as Fe4lO-St ( 5 t 4 2 - S )
f o r use in structural w o r k .
1.1.1 The s t e e l
may
also be supplied in copper-bearing quality in
which case it shall be designated a s Fe4lOCu-S (5t42-SC). 2. SUPPLY
OF MATERIAL
2.1 General requirements relating to th e supply of s t e e l shall conform
l387-l967~. 3. MANUFACTURE 3.1 Steel shall be manufactured by the open-hearth, electric, duplex, to IS :
b a s i c - o x y g e n o r a combination of these p r o c e s s e s . In case ar t y o t h e r process i s employed by th e m a n u f a c t u r e r , prior a p p r o v a l of th e p u r c h a s e r s h o u l d be obtained.
3.1.1 Steel shall be supplied semi-killed or killed. Rimming steel shall be supplied only by special agreement between the purchaser and
the manufacturer. 4. CHEMICAL COMPOSITION
4.1 The ladle an al y s i s of s t e e l , when made in accordance with IS : 2 2 8 1959§, shall be as follows: Constituent Carbon (for thicknessldiameter 20 mm and below) Carbon (for thickness/diameter over 20 mm) Sulphur
PhosphorL
Percent, Max 023 015
0055 0055
NOTE I — When steel is required in copper-bearing quality, the copper content shall be between .020 and 035 percent.
Rules forrotlndirlg off numerical values (revised). jSe~ 15:1762 ( Part I )-1974 C o d e f o r d e s i g n a t i o n o r s t e e l : P ar t I Ba s e d o n letter symbols (first revision). :G e ne r al requirements f o r the supply of metallurgical materials (first revision). o f c h e mi ca l a n a l y s i s o f pig i r o n , c a s t i r o n an d p l a i n carbon an d lo w - al lo y ~Ntetbods a t e e l s ( revised) ( S i nce r e v i s e d an d s p l i t i n t o t w o p a r t s ) .
4
IS ~226d975 Nom 2—When the steel is silicon killed,tl.se product analysis sh~ll~show a minimum of 010 percent silicon. When the steel is aluminium killed or killed with a combination of aluminium and silicon, tire requirement regarding minimum s i l i c o n co nt e nt d o e s n o t app l y .
4.2 Product Analysis — The product analysis s h al l be carried o u t
on
t h e f i ni s h e d product from the standard position. Permissible variation in case of such product analysis from the limits specified under 4.1 shall be a s f o l l o w s :
Constituent
Carbon (for thickness/diameter 20 mm
VariatiomT, Over Specf,ied Max:mum Limit, Percent, Max 0-02
and below)
Carbon (for thickness/diameter over 20 mm)
Sulphur Phosphorus NOTE — Product analysis shall not
003
0i305
0005
apply to rimming quality steel.
5. FREEDOM FROM DEFECTS 5.1 All finished steel shall be well and cleanly rolled to the dimensions, sections and weights specified. The finished material shall be ‘free from cracks; surface flaws; latninations; rough, jagged and imperfect edges; and all other harmful defects.
5.2 Minor surface defects may be removed by the manufacturer by grinding provided that the thick ness is not reduced locally by more than 4 percent (with a maximum of 3 mm). Reductions greater t h a n 4 percent but not exceeding 7 percent may be made only with the agreement of the purchaser. 5.2.1 Subject to agreement with the purchaser, surface defects which cannot be dealt with as in 5.2 may be repaired by chipping or grinding followed by welding provided that:
a) after complete removal of the defects .ind before welding, th~ thickness of the item is in no place reduced by more than 20 percent; b) welding is carried out by an apprcved procedure by competent operators with approved electrodes and that the weld is ground smooth to the correct nominal thickness; and c) subsequent to the finish grinding, the item may be required to be normalized or otherwise heat~treated. at the purchaser’s discretion. 5
15:226 -1975
6. SELECTION AND PREPARATION OF TEST SAMPLES 6.1 The points from which test samples are taken shall be so located in the product as to yield the clearest possible information regardin~ properties in the cross-sectional and longitudinal pLnes. The recommended locations for taking test samples for plates, sections and bar•s are indicated in Fig. 1. Alternatively, in case of sections, the samples may be taken from the web.
6.2 Wherever practicable, the rolled surface of the steel shall be retained on th e two opposite sides of the test sample. 6.3 In case of flat test samples f o r t e n s i l e t e s t , both surfaces a r e normally tQ be left on the test specimen for plate up to 32 mm thick. At least .dne rolled surface shall be left on rectangulat test samples taken from plate more than 32 mm thick. Round test samples are permitted, but should only be adopted for thickness exceeding 2 8 mm. 6.4 In case of flats up t& 16 mm thick, the test sample shall undergo, if possible, no machining whatsoever prior to use as a test piece. If this is not possible, the test sample shall undergo the minimum amount of
machining. 6.5 Bars”belo~28 mm may also be tested without machining. In case of bars having diameters or thicknesses between 28 and 71 mm, the bars
-may be symmetrically reduced by machining. For bars having diameters or thicknesses e x c e e d i n g 7 1 mm, th e t e s t sample may be taken from th e position shown in F i g. 1 .
6.6 In th e c a s e of s e c t i o ns , f l a t s and pl a t e s , bend t e s t s a r e to be carried out on rectangular test samples which, as f ar as po s s i bl e , should be of the full thickness of the product. In the case of sections, flats and plates .exceeding 28 mm in thickness, it i s permissible to remove metal fnim one side of the test sample before using it as a t e s t pi e ce . The rolled s u r f a c e of the test piece shall be on the outer side of the bend during the test. 6.7 Before test samples are detached, full particulars regarding cast number, size and weight of plates, sections, flats and bars in each cast shall be furnished by the manufacturer to the purchaser. In case of plates, the number of plates in each cast shall also be given. 6.8 Test samples shall be cut in such a manner that deformation is avoid. ed as far as possible, if guillotining or flame-cutting is employed, an adequate allowance shall be left for removal by machining. 6.9 Test samples taken from rolled steel which have undergone deformation through bending or twisting shall in all cases be straightened cold. If the deformation is too severe to allow cold straightening, it is persnissible, in the case of materials to be delivered i~ the annealed or normalized condition. to carry out straightening under the application of heat, provided the temperature does not exceed 65000. While
straightening test samples, care shall be taken to avoid any cold-working or temperature rise which will alter the properties of the samples as compared with the finished product which they represent. 6
AMENDMENT N O . 5
FE B R U A R Y 1984
TO IS:226-1975 S P E C I F I C A T I O N F O R S T R U C TU R A L S T E EL (STANDARD Q U A L I T Y ) (Fifth Revision) Al terati o n s
(Page 4, clause 4 . 1 , f i r s t tw n lin~sl
—
Substitute
the following for the existing lines:
‘14.1 The ladle analysis of steel, when carried out either by the method specified in the relevant parts of IS:228~ o r any other established instrumental/chemical I n c as e of dispute, the method shall be as follows. procedure given in relevant p ar ts o f I S: 22 8§ s ha ll b e referee method.’
(Page 4, fo~It—note w i t h ‘§‘ mark) Substitute the following for the existing foot—note: —
‘~Methods of chemical analysis of steel (issued in various parts).’
Adden d u m (Page 4, clause 1.1)
—
Add the following note after
1.1:
‘NOTE S tr ip i n c oi l form may also be supplied Bubject to prior agreement between the supplier and the purchaser.’ —
(s M D c 5) Printed at Simco PrintIng Press, Delhi, India
IS:226-1975
EZZZZZ2 POSITI0o~
S A M P 1~ E S
FIG. I
or
STRUCTURAL STEEL SEcTIoNs, PosirIoN AND ORIENTATION OF SAMPLES
7
6.10 Test samples shall not be annealed or otherwise subjected to heat treatment unless the material from which they are cut is similarly treated, in which case the test samples shall be similarly and simultaneously treated with the materia! before testing. Any slight straightening of test samples which may be required shall be done cold.
7 . TENSILE TEST 7.1 Number of Tensile Tests
7.1.1 Plates, Sections ( Angles, Tees, Beams, Channels, ele) and Flats — One tensile test shall be made from finished steel for every 40 tonnes or part thereof rolled continuously from each cast, a separate test being made for each class of steel product ( namely, plates, sections and flats ) rolled from a cast.
7.1.1.1 Where plates, sections or flats of more than one thickness are rolled from the same cast, one additional tensile test shall be made from the material in each class of prochtct for each viriation in thick ness of 6 mm.
7.1.2 Ben’s ( Round, Square and Hexagonal) — One tensile test shall be made from finished steel for every 4U tonnes or part thereof rolled continuously from each cast and for every class of product. When more than one diameter or t h i c k n e s s o f t h e ba r is specified, ~ne additional tensile test shall be made for each diameter ‘or thickness of the bar ordered, if so desired by the purchaser. 7.2 Tensile Test Pieces The tensile strength, yield stress and percentage elongation of steel shell be determined from standard test pieces cut lengthwise or crosswise front plates and lengthwise from sections, flats and bars. The tests shall be carried out on Indian Standard test pieces prepared in accordance with IS : I~08~l972*. 7.3 Tensile Test The tensile strength, yield stress and percentage elongation, when determined in accordance with IS: l608~l972* shall be as given in Table I. —
7.3.1 Th case of sections, the thidtncss of whiTh is not uniform throughout the profile, the limits shall be applied according to the actual maximum thickness of the piece selected for testing. 7.3.2 Should a tensile test piece break outside the middi~ half of its and the percentage elongation ol)tained is less than that specified, the test may be discar~dtd at the manufacturer’s option, and another. test made from the same plate, section, flat or bar. gauge length (see IS: l608~l972*)
Method for tensile testing of steI~ products (first reviiioe). 8
IS:226-1975 TABLE 1 MECHANICAL PROPERTIES OF STRUCTURAL STFEL (STANDARD QUALITY)
CLASS OF STEEL
(Clause 7.3) NOMtNAL
PuorsucT
‘rtotcx-
NESS/
TENSILE STISENOTIt
5YIELD STuEss,
Mm
DIAMETER
PERCENTAGE ElONGATION, Mm, GAUGE LENGTH
565 V~
(I)
(3)
(2) mm
*Bend test only shall
Below 6 Plates, sections (for
example, angles, tees, beamt, channels, etc ) and flats
6 up to and including
20
Over 20 up to including
and
40
Over 40
250 (26)
23
410 to 530 (42 to 54)
240 (24)
23
230
23
410 to 530
hexagonal)
NOTE
410’ to 530
10 up to and
(42to54)
~ including 20
LOver I —1 N/mm1
— 1
(23)
tBend test only shall he required
Below 1 0 reand
be required
410 to 530 (42to54)
(42to54)
Bars (round, squa-
~5)
(4)
N/mm’ N/mm! ( kgflmrnt) (kgf/mm’)
410 to 530 (42to54)
20
250
23
26 240 24
23
MNm’ — 0102 0 kgfmm5.
NOTE 2 — Provided that the yield stress and elongation requirements are omplied with, the upper limit for tensile strength may be raised by 30 N/mm2 ( 3 kgf.mm2). NOTE 3—Gauge lengths other than 5~65VS
0 may alto be used, in which case the elongation shall be read from IS 3803-1967 ‘Methods for elongation conversions for steel’. 51n case of plates, sections, and flats below 6 mm, the yield stress shall he assumed to be at least the same as that for thickness between 6 and 20 mm. tIn case of bars below 10 mm diameter, the yield stress shall he assumed to [se at least the same as for bars of dianseter between 10 atsd 2(1 mm.
8. BEND TEST
8.1 Number of Bend Tests — Bend test shall be made from finished steel from each cast. The number of tests for every 20 tonnes of material, or part thereof, rolled contintotssly, shall be as shown in Table 2. One additional test shall be made for each class of product and for each variation in thickness.
9
18:226-1975 TABLE 2 NUMBER OF 3END TUTU (~lasss. 8.1) CLAss or S T E E L P R O D U C T
Nuxaaa 07 Enun TZUTs
(1)
(2)
1 lengthwise (for each type) lengthwise andlor I crosswise
Section Plates
I
Flats and bars (rousd, square and hexagonal)
I
lengthwise
8.2 Bend Test Pieces — The test pieces shall be cut lengthwise or crossws’e or both from plates, and lengthwise from sections, flats and bars. When sections permit, these shall be not less than 40 mm wide. If the manufacturer so desires, round, square, hexagonal and flat bars shall be bent in the full section as rolled. 8.2.1 In all bend test pieces, the rough edge or arris resulting from shearing may be removed by filing or grinding or machining, but the tr-:t pieces shall receive no other preparatton. 8.2.2 The test pieces shall not be annealed or otherwise subjected to heat treatment unless the material from which they are cut i s similarly treated, in which case the test pieces shall be similarly and simultaneously treated with the material, before testing. 8.3 Bend Test IS l599~l974*.
—~
Bend test shall be conducted in accordance witlk
8.3.1 For bend tests except in the case of round bars 25 mm in diameter and under, the test piece when cold shall, without cracking, be doubled over either by pressure or by blows from a hammer until the internal diameter is not greater than three times the thickness of the test piece and the sides are parallel. 8 . 3 . 2 In t h e case of round bars 25 mm in diameter and under, the i nt e r na l d i a m e t e r of th e bend s h al l be n o t g s i a t e r than t w i c e th e
diameter of the bar. 9. DIMENSIONS
9.1 Unless otherwise agreed to between the purchaser and the manufacturer the nominal dimensions of rolled steel products conforming to this specification shall be in accordance with the relevant Indian S t a n d a r d s ; currently available Indian Standards ar e t i s t e d in Table 3 . Method for bend test for steel products other than sheet, strip, wire and tube (first revs, ion).
10
IS ~226-1975 TABLE 3 INDIAN STANDARDS WHICH GIVE NOMINAL DIMENSIONS OF ROLLED STEEL j’RODUCTS lCtausey.l j RELEVANT INnIAN STANDAuD
PRODUCT
Beam chans’iel and angle sections
IS 808-1964 Specification fQr rolled tseel beam channel and angle sections (revised)
Beams, M B
IS:tlOB (Partl)-1973 Dimensions of hot rolled steel hcam~ :Part 1 MB series (second
series
rolled s
Beam, channel and angle sections
IS: 1864-1963 Dimensions for angle sections with legs of unequal width and thickness 15: 3954-1966 Specification for hoe rolled steel channel sections
for general engineering
purposes Tee bars
IS: 1173-1967 Specification for
Bulb angles
IS:1252-1958 Specification
hot rolled and
slit steel,tee bars (first revision) for
rolled
steel
sections, bulb angle Plates, sheet and strip
IS :1730-1974 Dimensions for steel plate, sheet and strip for structural and general engineerisig purposes (first revisio,s
Part I Plate Part 2 Sheet Part 3 Strip
Flats
IS:1731-1971 Dimensions for steel flats for str~ctural and general ?ngineering purposes
(first revision
Round and tquare bars
IS:1732-1971 Dimensions for round and square
steel bars
for structural and
general
engineering purposes (first revision) Bulb plates
15 :1863-1961 Dimensions for rolled steel bulb
plates Sheet, piling sections Channel sections
IS : 2314-1963 Specification for steel sheet piling scctions IS : 3954-1966 Specification for l~ot rolled steel channel sections for general engineering purposes
Plates for ship’s hull structure
IS : 5488-1969 Dimensions
for hot rolled steel
plates for ship’s hull structures
10. TOLERANCES
10.1 UnIt
otherwise agreed to between the purchaser and the manu-
facturer, the rolling and cutting tolerances for steel products conforming to this standard shall be those specified in IS l852~l973*. Rolhing and cutting tolerances for hot rolled steel products (second revision). 11
IS :226- 1975 11. RETESTS
11.1 Should any one of the test pieces first selected fail to pass any of the tests specified in this standard, two further samples shall be selected for testisig in respect of each failure, Should the test pieces from both these additional samples pass, the material represented by the test samples shall he (leerned to comply with the reqt tiremeists of that particular test. Shotild the test pieces from either of these additional samples fail, the material represented by the test samples shall be considered as not having complied with tlsis standard.
12. CALCULATION OF WEIGHT
i2.I The weight of steel plates. sections flats and bars shall be calculated 3. t)t/ the basis that steel weigi 7’85 g cm 13. DELIVERY 13.1 Stibject to prtor ~sgreernent betweets he purchaser atsrl the rnanu— f/n i rer, suitable prntecl ive treatment may be givets to the material at wr tOll/fl/f.
14. MARKING oh pr-el oct. except eund, square and hexagonal bars aticl flats catr; a 1 ) tat/I or Ito >tampKd with the mann factt rer~ nasne or e—tsiark. In the ase of bars and Hats, the tag shall bear Use mats n I. r V 5 na ml ir trade—tn/s rk. II)e.~imna t icts o steel should also be n//iatlv rnarkd rn the pro~i ttct or ags. 14.1
lIvery htavv and snedi/itn e m rticturms miii pt elsicts and each plate of 10 m m and over shall be stau.j d dx ich the east nt/rn her and Itt r//atlt ta(;tiirers name or trade—mark. in of ph ales below 10 mm I ickne~s, the lop ItImite of each pile ( which m is consist of approximna— telx 16 plates ) shall he marked wit I t the i~ utimber. 3>1.?
iiticktie
m.
14.3 The steel hall hr S m it ably painted
xx
t
a colour in accordance with
IS : 204~i-l~J63~
14.3.1 The material may also h/ mat two with the ISI Certifteatioc Mask. NOTE— The u.se of the ISI Ccrtificatic,n Mark is governed by the provisions of the Indian Standards Institution ( Certification Marks) Act and the Rules and Regulation, made thereunder. The 1St Mark on products covered by an Indian Standard conveys the assurance that they have been produced to comply with the requirements
of that standard under a well-defined system of inspection, testing and quality control which is devised and supervised by IS! and operated by the producer. 1St marked
products are also continuously checked by IS! for conformity to that standard as a further safeguard. Details of condition, under which a licence for the use of the ISI Certification Mark may be granted to manufacturers or processors, may be obtained from the Indian Standards Institution.
Colos.r code for she idenmification of wrought steels for general engineering put i~0s5
12
IS:226- 1975 Centinuad from page 2
1
Strttctural Steels Subcommittee, SMDC 5 : 2 Cant’.n o r
Re pr es e~ tt sn g Modella Steel & Alloys Ltd, Bombay
Da U. N. BERANY
Mem ber s ASSISTANT Dsstxcroa (MS) DEPUTY 1)iaEcToa (B&S DaJ.J. IaANs SEES M. N. KIIANNA Saas S. B. KNAHE Sgsts B . L. KSRATRIYA DR D. M. LAKESANI Sstas P. LAXMINARAYANA Da S. NARAHALIS RAO REPRESENTATIVE SEES X V . R. D. SAXTON StiRs H. S. RAO ( Atternate Saas M. K. SEN Sass V. R. SUHRAMANIAN
Sstas S. MALIK (Alternate)
Ssas K . M. TANEJA
)-I
Ministry of Ra,ilways Alternate
Tata Iron & Steel Co Ltd,Jamshedpur Bhilai Steel Plant, Bhilai Central Boilers Board, New Delhi Rourkela Steel Plant, Rourkela Indian Iron & Steel Co Ltd, Burnpur Hindustan Shipyard Ltd, Visakhapatnam Structural Engineering Research Centre, Roorkee Braithwaite & Co ( I ) Ltd, Calcutta Lloyd’s Register of Shipping, Bombay Ministry of Defeace (DGI
Indian Oxygen Ltd, Calcuua Directorate General of Supplies & ~)isposats
13
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