JIS-G-3132-2005-ENG.pdf

J IS JAPANESE I N DUSTR IAL STANDARD Translated and Published by Japanese Standards Association Hot-rolled carbon steel strip for pipes and tubes ICs 77.140.20 Reference number : JIS G 3132 : 2005 (E) PROTECTED BY COPYRIGHT G 3132 : 2005 Foreword This translation has been made based on the original Japanese Industrial Standard revised by the Minister of Economy, Trade and Industry through deliberations at the Japanese Industrial Standards Committee, as the result of proposal for revision of Japanese Industrial Standard submitted by The Japan Iron and Steel Federation (JISF) with the draft being attached, based on the provision of Article 12 Clause 1 of the Industrial Standardization Law applicable to the case of revision by the provision of Article 14. Consequently JIS G 3132 : 1990 is replaced with this Standard. Attention is drawn to the possibility that some parts of this Standard may conflict with a patent right, application for a patent after opening to the public, utility model right or application for registration of utility model after opening to the public which have technical properties. The relevant Minister and the Japanese Industrial Standards Committee are not responsible for identifying the patent right, application for a patent after opening to the public, utility model right or application for registration of utility model after opening to the public which have the said technical properties. Date of Establishment: 1968-04-01 Date of Revision: 2005-10-20 Date of Public Notice in Official Gazette: 2005-10-20 Investigated by: Japanese Industrial Standards Committee Standards Board Technical Committee on Iron and Steel JIS G 3132 : 2005, First English edition published in 2006-03 Translated aiid published by: Japanese Standards Association 4-1-24, Altasaka, Minato-ku, Tokyo, 107-5440 JAPAN In the event of any doubts arising as to the contents, the original JIS is to be the final authority. O JSA 2006 All rights reserved. Unless otherwise specified, no part of this publication inay be reproduced or utilized iii any form or by any ineans, electronic or mechanical, including pliotocopying and microfilin, without permission in writing froin the piiblisher. Printed in Japan PROTECTED BY COPYRIGHT AT G 3132 : 2005 Contents Page 1 2 3 4 5 6 7 8 8.1 8.2 9 9.1 9.2 10 11 Scope Normative references Classification. symbols and applicable thicknesses Chemical composition . Mechanical properties . Shapes. dimensions. mass and tolerances Appearance . Tests . Chemical analysis Mechanical test Inspection Inspection Reinspection Marking . Report 1 1 1 1 2 2 4 4 4 4 5 5 5 5 6 (i PROTECTED BY COPYRIGHT JAPANESE INDUSTRIAL STANDARD JIS G 3132 : 2005 Classification symbol Hot-rolled carbon steel strip for pipes and tubes Applicable thickness mm 1 This Japanese Industrial Standard specifies the hot-rolled carbon steel strip (hereafter referred to as “steel strip”) to be used for welded steel pipes and tubes. Scope 2 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this Standard. The most recent edi- tions of the standards (including amendments) indicated below shall be applied. JIS G 0320 Standard test methods for heat analysis of steel products JIS G O404 Steel and steel products-General technical delivery requirements JIS G 0415 Steel and steel products-Inspection documents JIS G 3193 Dimensions, mass and permissible variations of hot rolled steel plates, sheets and strips Test pieces for tensile test for metallic materials Bend test pieces for metallic materials Method of tensile test for metallic materials Method of bend test for metallic materials JIS Z 2201 JIS Z 2204 JIS Z 2241 JIS Z 2248 3 Classification, symbols and applicable thicknesses The steel strips shall be classified into 4 grades and their symbols and applicable thicknesses shall be as given in table 1. Table 1 Classification, symbols and applicable thicknesses 1.2 or over up to and incl. 13 SPHT2 1.6 or over up to and incl. 13 (1 SPHT4 Note (1) May be applied for thicknesses 1.2 mm or over up to and excluding 1.6 mm as agreed between the purchaser and the manufac- turer. 4 and the determined cast analysis values shall be as specified in table 2. Chemical composition The steel strip shall be tested in accordance with 8.1 PROTECTED BY COPYRIGHT 2 G 3132 : 2005 Classification symbol SPHT1 Table 2 Chemical composition Unit: % C Si Mn P S O. 10 max. 0.35 max. (2) 0.50 max. 0.040 max. 0.040 max. 180“ 180“ 180“ 180“ I SPHT2 I 0.18max. I 0.35 max. I 0.60 max. I 0.040 max. I 0.040 max. I Flat Thick- on ness itself x 0.5 Thick- Thick- ness ness x 1.0 x 1.5 Thick- Thick- ness ness x 1.5 x 2.0 Thick- Thick- ness ness x 1.5 x 2.0 I SPHT3 I 0.25 max. I 0.35 max. I 0.30 to 0.90 I 0.040 max. I 0.040 max. I 340 min. I SPHT4 I 0.30 max. I 0.35 max. I 0.30 to 1.00 I 0.040 max. I 0.040 max. I 25 min. 27 min. Note (2) It may be modified to 0.04 5% max. by agreement between the purchaser and the supplier. 490 min. 5 Mechanical properties The steel strip shall be tested in accordance with 8.2 and the determined tensile strength, elongation and bendability shall comply with table 3. In the bend test, no cracks shall be generated on the outside of the bent portion. The bend test may be omitted unless otherwise specified by the purchaser. 15 min. 18 min. Table 3 Mechanical properties Classi- fication symbol Tensile test piece Bendability Elongation strength N/mm2 Bend- ing angle I Inside radius Test piece I mm Thickness to and incl. 13 3.0 or over to and excl. 6.0 6.0 or over up to and incl. 13 SPHT1 270 min. 30 min. 32 min. II 35 min. 37 min. No. 5 taken in rolling direction No. 3 taken in rolling direction SPHT2 30 min. 32 min. SPHT3 410 min. 20 min. 22 min. II 25 min. 27 min. SPHT4 20 min. 22 min. Remarks 1 The value given above are not applicable to the irregular portions at either and of the steel strip. 2 1 N/mm* = 1 MPa 6 Shapes, dimensions, mass and tolerances The shapes, dimensions, mass of the steel strip and their tolerances shall comply with JIS G 3193. When especially required, however, the range of mass for a steel strip may be agreed upon by the purchaser and the supplier. PROTECTED BY COPYRIGHT 3 G 3132 : 2005 Tolerances on thickness shall comply with table 4 or table 5. The thickness shall be measured at a position not less than 20 mm from the side edge, or at the centre of the width, if the steel strip is less than 40 mm in width. The maximum value of cam- ber shall be 5 mm for any 2 m length irrespective of the width of the steel strip. The measurement of camber shall be carried out only when requested by the purchaser. Table 4 Tolerances on thickness (applicable to SPHTl, SPHTS and SPHTS) Unit: mm Notes (3) The value shall be applied to width of 1500 mm or over to and excl. 1600 mm. (4) The value shall be applied to width of 1800 mm or over to and excl. 2 O00 mm. Remarks : The values specified above are not applicable to the irregular portions at either end of the steel strip. PROTECTED BY COPYRIGHT 4 G 3132 : 2005 Table 5 Tolerances on thickness (applicable to SPHT4) Unit: mm Thickness Under 1.60 Under 1200 = 0.14 Width I +0.15 I -0.16P) 1 800 or over up to and incl. 2 300 11.60orovertoandexcl.2.00 I -0.16 I k0.19 I 0 . 2 0 I - I 2.00 or over to and excl. 2.50 I 0 . 1 8 I IO.22 I =0.23 I I0.25(6) I 2.50 or over to and excl. 3.15 I -0.20 I i0.24 I -0.26 I i0.29 3.15 0 1 - over to and excl. 4.00 z 0.23 i 0.26 = 0.28 i 0.30 4.00 or over to and excl. 5.00 = 0.26 I 0.29 - 0.31 I0.32 5.00orovertoandexcl.6.00 I -0.29 I k0.31 I 0 . 3 2 I k0.34 6.00 or over to and excl. 8.00 I 0 . 3 2 I *0.33 I =0.34 I i0.38 8.00 01- over to and excl. 10.00 I =0.35 I +0.36 I -0.37 I +0.44 I 10.00 0 1 - over to and excl. 12.5 I -0.38 I i0.40 I 0 . 4 1 I i0.49 12.5 or over up to and incl. 13.0 = 0.41 I 0.44 = 0.45 I0.54 Notes ( 5 ) The value shall be applied to width of 1 500 mm or over to and excl. 1600 mm ( 6 ) The value shall be applied to width of 1 800 mm or over to and excl. 2 O00 mm Remarks : The values specified above are not applicable to the irregular por- tions at either end of the steel strip. 7 Appearance The appearance of the steel strip shall comply with the require- ments of clause 7 of JIS G 3193. However, it may be agreed upon by the purchaser and the supplier when there is a special request from the purchaser. 8 Tests 8.1 Chemical analysis 8.1.1 General requirements and sampling method for chemical analysis The chemical analysis for the steel strip shall be conducted by cast analysis, and the general requirements for chemical analysis and the sampling method for analysis shall be as specified in clause 8 of JIS G 0404. 8.1.2 Test method The method for cast analysis shall conform to JIS G 0320. 8.2 Mechanical test 8.2.1 General The general requirements for the mechanical test shall be as specified in clause 9 of JIS G 0404. However, the sampling method shall be Class A of clause 7 in JIS G 0404, and the number of test pieces and the sampling position and direc- tion shall be as follows: PROTECTED BY COPYRIGHT 5 G 3132 : 2005 Number of test pieces for tensile and bend tests Take one test piece each for the tensile test and bending test from each lot of the same heat rolled to the same thickness. However, for lots over 50 t, take two specimen products, from each one of which one test piece for tensile and one for bend test shall be sampled. Sampling position and direction of tensile and bend test pieces The test piece shall be taken in parallel with the rolling direction, and the centre of a test piece shall be at a quarter-width from the side edge. However, when it is infeasible to observe the requirement of a quarter-width from the side edge, the sampling position should be as close to the specified position as possible. 8.2.2 Tensile test a) b) The tensile test shall comply with the following. No. 5 test piece specified in JIS Z 2201 shall be used. The test method shall be in accordance with JIS Z 2241. 8.2.3 Bend test a) b) The bend test shall be as specified in the following. No. 3 test piece specified in JIS Z 2204 shall be used. The test method shall be in accordance with JIS Z 2248. 9 Inspection 9.1 Inspection The inspection shall be carried out as follows: a) b) c) d) e) The general requirements for the inspection shall be as specified in JIS G 0404. The chemical composition shall conform to the requirements of clause 4. The mechanical properties shall conform to the requirements of clause 5. The shapes, dimensions and mass shall conform to the requirements of clause 6. The appearance shall conform to the requirements of clause 7. 9.2 Reinspection The steel strip having failed to meet the requirements for ten- sile and bend tests may be subjected to a retest for final acceptance in accordance with 9.8 of JIS G 0404. 10 Marking each bundle with the following details by suitable means. The steel strip which has passed the inspection shall be marked for a) Classification symbol b) Heat number or inspection number c) Dimensions d) Mass e) Manufacturers name or identifying brand PROTECTED BY COPYRIGHT 6. G 3132 : 2005 11 Report When requested by the purchaser in advance, the manufacturer shall submit an inspection document in accordance with clause 13 of JIS G 0404. The type of inspection document shall be, unless otherwise specified, 2.3 or 3.1.B in table 1 of JIS G 0415. PROTECTED BY COPYRIGHT Errata for JIS (English edition) are printed in Standardization Journal, published monthly by the Japanese Standards Association, and also provided to subscribers of JIS (English edition) in A4oritIil Information. Errata will be provided upon request, please contact: Standardization Promotion Department, Japanese Standards Association 4- 1-24, Akasaka, Minato-ku, Tokyo, 107-8440 JAPAN TEL. 03-3583-8002 FAX. 03-3583-0462 PROTECTED BY COPYRIGHT