Disclosure to Promote the Right To Information

Transcription

1 इ टरन ट म नक Disclosure to Promote the Right To Information 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 counities 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. ज न1 क अ+धक र, ज 1 क अ+धक र Mazdoor Kisan Shakti Sangathan The Right to Information, The Right to Live प0र 1 क छ ड न' 5 तरफ Jawaharlal Nehru Step Out From the Old to the New IS/ISO (2004): Steel Wire Rod - Dimensions and Tolerances [MTD 4: Wrought Steel Products]! न $ एक न' भ रत क +नम-ण Satyanarayan Gangaram Pitroda Invent a New India Using Knowledge! न एक ऐस खज न > ज कभ च0र य नहB ज सकत ह ह Bhartṛhari Nītiśatakam Knowledge is such a treasure which cannot be stolen

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4 IS/ISO : 2004 Indian Standard STEEL WIRE ROD DIMENSIONS AND TOLERANCES ICS BIS 2009 B U R E A U OF I N D I A N S T A N D A R D S MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG NEW DELHI April 2009 Price Group 4

5 Wrought Steel Products Sectional Coittee, MTD 4 NATIONAL FOREWORD This Indian Standard which is identical with ISO : 2004 'Steel wire rod Dimensions and tolerances' issued by the International Organization for Standardization (ISO) was adopted by the Bureau of Indian Standards on the recoendation of the Wrought Steel Products Sectional Coittee and approval of the Metallurgical Engineering Division Council. The text of ISO Standard has been approved as suitable for publication as an Indian Standard without deviations. Certain conventions are, however, not identical to those used in Indian Standards. Attention is particularly drawn to the following: a) Wherever the words 'International Standard' appear referring to this standard, they should be read as Indian Standard'. b) Coa {,) has been used as a decimal marker in the International Standard while in Indian Standards, the current practice is to use a point (.) as the decimal marker. In this adopted standard, reference appears to the following International Standard for which Indian Standard also exists. The corresponding Indian Standard which is to be substituted in its place is listed below along with its degree of equivalence for the edition indicated: International Standard Corresponding Indian Standard Degree of Equivalence ISO 6929 : 1987 Steel products IS 1956 (in various parts) Glossary of Technically Equivalent Definitions and classification terms relating to iron and steel In reporting the results of a test or analysis made in accordance with this standard, if the final value, observed or calculated, is to be rounded off, it shall be done in accordance with IS 2 : 1960 'Rules for rounding off numerical values {revised)'.

6 IS/ISO : 2004 Indian Standard STEEL WIRE ROD DIMENSIONS AND TOLERANCES 1 Scope This International standard specifies dimensions and tolerances to the dimensions applicable to steel wire rod as defined in ISO Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 6929:1987, Steel products Definitions and classification 3 Dimensions and tolerances on dimensions 3.1 General The dimensions and tolerances applicable to the dimensions of hot-rolled steel wire rod shall be as specified in 3.2 to Round wire rod The preferred nominal diameters and tolerances on diameters shall be as specified in Table 1 and Table 2 respectively. Three levels of tolerance are standardized T1, T2 and T3. The permissible out-of-round for all sizes, measured as the difference between the maximum and minimum diameters at any cross-section, shall be 80 % of the total tolerance specified on the diameter (see Table 2). 3.3 Square wire rod The nominal width of side and tolerance on width of side shall be as specified in Table 3 and Table 4 respectively. The permissible out-of-square for all sizes, measured as the difference of the distances between faces in the same cross-section, shall be 80 % of the total tolerance specified on the width of side (see Table 4). 3.4 Hexagonal wire rod The normal thickness, measured as the width across opposite flat faces, and tolerance on thickness shall be as specified in Table 5 and Table 6 respectively. The permissible out-of-hexagon for all sizes, measured as the difference between the widths across the flats at any cross-section, shall be 80 % of the total thickness tolerance (see Table 6). 1

7 IS/ISO : Rectangular wire rod The nominal size, defined as width b by thickness d, and tolerance on size shall be as specified in Table 7 and Table 8 respectively. Table 1 Preferred diameter, nominal section and nominal mass of round wire rod Preferred diameter, d Cross-sectional area, S a b 2 Mass per unit length a c kg/m 5 19,63 0,154 5,5 23,76 0, ,27 0,222 6,5 33,18 0, ,48 0,302 7,5 44,18 0, ,26 0,395 8,5 56,74 0, ,62 0,499 9,5 70,88 0, ,54 0,617 10,5 86,59 0, ,03 0,746 11,5 103,9 0, ,1 0,888 12,5 122,7 0, ,7 1,04 13,5 143,1 1, ,9 1,21 14,5 165,1 1, ,7 1,39 15,5 188,7 1, ,1 1,58 16,5 213,8 1, ,0 1,78 17,5 240,5 1, ,5 2,00 18,5 268,8 2, ,5 2,23 19,5 298,6 2, ,2 2, ,3 2, ,1 2, ,5 3, ,4 3, ,9 3, ,9 4,17 2

8 IS/ISO : 2004 Table 1 {continued) a b c Preferred diameter, d Cross-sectional area, S a b 2 Mass per unit length a c kg/m ,6 4, ,7 4, ,5 5, ,9 5, ,8 5, ,2 6, ,3 6, ,9 7, ,1 7, ,9 7, ,2 8, ,1 8, ,6 9, ,6 9,86 For information only. S = 0,785 4 d ,3 10, ,4 10, ,2 11, ,5 11, ,4 12, ,9 13, ,9 13, ,6 14, ,7 14, ,5 15,41 Mass/m = 0, S. a Table 2 Tolerances on nominal diameter and out-of-round of round wire rod Nominal diameter, d Tolerances Out-of-round ( ) T1 a T2 T3 T1 T2 T3 5,00 d 10,00 ±0,30 ±0,25 ±0,15 0,48 0,40 0,24 10,00 < d 15,00 ±0,40 ±0,30 ±0,20 0,64 0,48 0,32 15,00 < d ±0,50 ±0,35 ±0.25 0,80 0,56 0,40 25,00 < d 40,00 ±0,60 ±0,40 ± 0,30 0,96 0,64 0,48 40,00 < d 50,00 ±0,80 ±0,50 1,28 0,80 For the size range 5,00 d 10.00, larger values for the tolerance may be agreed upon between the parties. 3

9 IS/ISO : 2004 Table 3 Width of side, nominal section and nominal mass of square wire rod a Preferred width, a Cross-sectional area a 2 Mass per unit length a kg/m ,0 1, ,0 2, ,0 2, ,0 2, ,0 2, ,0 3, ,0 3, ,0 3, ,0 4, ,0 4, ,0 4, ,0 5, ,0 5, ,0 6, ,0 6, ,0 7, ,0 7, ,0 8,04 For information only. Table 4 Width tolerances and out-of-square of square wire rod Nominal width, a over up to and including Width tolerance Out-of-square ( ) 8,5 15 ±0,4 0, ±0,5 0, ±0,6 0,96 NOTE Limited corner radii are permissible. 4

10 IS/ISO : 2004 Table 5 Thickness, nominal section and nominal mass of hexagonal wire rod a Preferred thickness, a Cross-sectional area a 2 Mass per unit length a kg/m ,9 1, ,7 1, ,3 1, ,6 2, ,6 2, ,4 2, ,2 3, ,1 3, ,8 3, ,3 4, ,4 4, ,3 4, ,0 5, ,3 6, ,4 6, ,2 7, , ,1 8, ,1 8, ,8 9, ,3 9, ,5 10, ,5 10, ,2 11, ,6 12,12 For information only. Table 6 Thickness tolerances and out-of-hexagon of hexagonal wire rod over Nominal width, a up to and including Thickness tolerance Out-of- hexagon ( ) 8,5 15 ±0,4 0, ±0,5 0, ±0,6 0,96 NOTE Limited corner radii are permissible. 5

11 IS/ISO 16124:2004 Table 7 Size, nominal section and nominal mass of rectangular wire rod a Preferred b x d Cross-sectional area a 2 Mass per unit length a kg/m 18 x ,0 1,41 18 x , x ,0 1,57 20 x ,0 1,88 20 x ,0 2,20 22 x 8 176,0 1,38 22 x ,0 1,73 22 x ,0 2,07 22 x ,0 2,42 25 x 8 200,0 1,57 25 x ,0 1,96 25 x ,0 2,36 25 x ,0 2,75 25 x ,0 3,14 28 x 8 224,0 1,76 28 x ,0 2,20 28 x ,0 2,64 28 x ,0 3,08 28 x ,0 3,52 30 x 6 180,0 1,41 30 x 8 240,0 1,88 30 x ,0 2,36 30 x ,0 2,83 30 x ,0 3,30 30 x ,0 3,77 For information only. Table 8 Tolerances of rectangular wire rod over Nominal width, b or nominal thickness, d up to and including Width tolerance Thickness tolerance 8 ±0, ±0,4 ±0, ±0,5 ±0, ±0,6 NOTE Limited corner radii are permissible. 6

12 IS/ISO 16124: Inspection on the cross-sectional dimensions In cases of dispute, the cross-sectional dimensions shall be measured at a distance from the end of wire rod greater than those included in Table 9. Table 9 Measured distance from the end of the coil Nominal diameter (or dimension), d Distance from the end of the coil 5 d < d < d < d < d < d Mass of coils Mass and tolerance on mass of individual coils may be agreed upon between manufacturer and customer. It is permitted that a maximum of 5 % of the number of coils may be supplied with a mass less than the specified minimum mass. MGIPF 147 Deptt. of BIS/2009-~ Books. 7

13 Bureau of Indian Standards BIS is a statutory institution established under the Bureau of Indian 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 the 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 (Publications), BIS. Review of Indian Standards Amendments are issued to standards as the need arises on the basis of coents. Standards are also reviewed periodically; a standard alongwith 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 should 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 (4773). Amendments Issued Since Publication Amend No. Date of Issue Text Affected Headquarters: BUREAU OF INDIAN STANDARDS Manak Bhavan, 9 Bahadur Shah Zafar Marg, New Delhi Telephones: , , Website: Regional Offices : Central Eastern Manak Bhavan, 9 Bahadur Shah Zafar Marg NEW DELHI /14 C.I.T. Scheme VII M, V.I.P. Road, Kankurgachi KOLKATA Northern SCO , Sector 34-A, CHANDIGARH Southern C.I.T. Campus, IV Cross Road, CHENNAI Telephones , , , , Western Manakalaya, E9 MIDC, Marol, Andheri (East) MUMBAI , , Branches : AHMEDABAD. BANGALORE. BHOPAL. BHUBANESHWAR. COIMBATORE. FARIDABAD. GHAZIABAD. GUWAHATI. HYDERABAD. JAIPUR. KANPUR. LUCKNOW. NAGPUR. PARWANOO. PATNA. PUNE. RAJKOT.THIRUVANANTHAPURAM. VISAKHAPATNAM. Printed by the Manager, Govt, of India Press, Faridabad