JIS-G-3452-2004-ENG.pdf

JIS JAPANESE INDUSTRIAL STANDARD Translated and Published by Japanese Standards Association (JIW Carbon steel pipes for ordinary piping ICs 23.040.10;77.140.75 Reference number : JIS G 3452 : 2004 (E) PROTECTED BY COPYRIGHT 7s G 3452 : 2004 Foreword This translation has been made based on the original Japanese Indus- trial 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 In- dustrial Standardization Law applicable to the case of revision by the provision of Article 1 4 . Consequently JIS G 345211997 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 identdying the patent right, application for a patent after opening to the public, utility model right or application for registra- tion of utility model after opening to the public which have the said tech- nical properties. Date of Establishment: 1962-03-01 Date of Revision: 2004-03-20 Date of Public Notice in Official Gazette: 2004-03-22 Investigated by: Japanese Industrial Standards Committee Standards Board Technical Committee on Iron and Steel JIS G 3452 : 2004, First English edition published in 2004-06 Translated and published by: Japanese Standards Association 4-1-24, Akasaka, Minato-ku, Tokyo, 107-8440 JAPAN In the event of any doubts arising as to the contents, the original JIS is to be the final authority. O JSA 2004 All rights reserved. Unies otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher. Printed in Japan PROTECTED BY COPYRIGHT -,-,- G 3452 : 2004 Contents Page 1 Scope 1 2 Normative references 1 . 3 Classi&ation and symbol 1 4 Manufacturing method 1 5 Chemical composition 2 6 Mechanical properties 2 6.1 Tensile strength and elongation 2 6.2 Flatness 3 6.3 Bendability. 3 7 Uniformity of zinc coating . 8 Hydrostatic test characteristics or nondestructive test characteristics 3 9 Dimensions, weight and dimensional tolerances . 3 10 Appearance 5 . . . 3 11 Test 5 11.1 11.2 Chemical analysis 6 11.3 Tensile test 6 11.4 Flattening test 6 11.5 Bend test 6 11.6 Sampling of test material and number of test pieces 5 . Zinc coating test . 7 11.7 Hydrostatic test or nondestructive examination 7 12 Inspection 7 12.1 Inspection 7 12.2 Reinspection 7 13 Marking 7 14 Report 7 . . . . (i) PROTECTED BY COPYRIGHT -,-,- JAPANESE INDUSTRIAL STANDARD Symbol of grade SGP JIS G 3452 : 2004 Division Remarks I Pipe without zinc coating Black pipe Galvanized pipe 1 Pipe with zinc coating Carbon steel pipes for ordinary piping 1 Scope This Japanese Industrial Standard specifies carbon steel pipes (hereafter referred to as “pipes“) used for the piping for conveying steam, water (except public water supply service), oil, gas, air, etc. at comparatively low working pressures. 2 Normative references The standards listed in attached table 1 contain provisions which, through reference in this Standard, constitute the provisions of this Standard. The most recent editions of the standards (including amendments) shall be applied. 4 Manufacturing method The manufacturing method shall be as follows: a) The pipe shall be manufactured by butt welding or electric resistance welding. b) The pipe shall stay as manufactured. However, cold-finished pipe shall be annealed after manufacture. Both ends of the pipe of nominal size 300 A or smaller shall be threaded or plain-ended and those for 350 A or larger shall be plain-ended. When required by the purchaser, the pipe may be furnished with bevel ends ( 1 ) . Note (l) Unless otherwise specified, the shape of the bevel end shall be as shown c) in figure 1. t : thickness Figure 1 Shape of bevel end PROTECTED BY COPYRIGHT -,-,- 2 G 3452 : 2004 Symbol of grade P S SGP 0.040 max. 0.040 Max. d) e 0 5 Symbol of grade SGP For threaded pipe, taper threads (2 specified in JIS B 0203 shall be applied on both ends, and a socket as in JIS B 2302 or JIS B 2301 shall be screwed into one end of the threads. The other end with a socket not screwed shall be provided with a thread protecting ring. For the smaller pipes this part may be protected by other suitable means. When specified by the purchaser, however, the threaded pipe may dispense with such a socket. Note (2 For galvanized pipe, the pipe and the socket shall be galvanized before threading. In this case, the black pipe and the socket that have passed inspection shall be thoroughly cleaned by sand blasting, pickling, etc. and then galvanized by a hot-dipped galvanizing process. The zinc used for galvanizing shall be at least equal to the distilled zinc metal Class 1 specified in JIS H 2107. The inspection of taper threads shall be in accordance with JIS B 0253. Tensile strength Elongation % No. 11 test piece No. 12 test piece No. 5 test piece N/mm2 Longitudinal Transverse 290 min. 30 min. 25 min. Chemical composition The pipe shall be subjected to the test of 11.2 and the re- Remarks 1 2 The values of elongation given in table 3 shall not be ap- plied to the pipe whose nominal size is 32 A or smaller. However, the value of elongation shall be recorded. In sampling the tensile test pieces, No. 12 or No. 5 test piece shall be taken from the portion not involving welded seams. PROTECTED BY COPYRIGHT -,-,- 3 G 3452 : 2004 Shape of test piece No. 12 test piece No. 5 test piece Elongation values for wall thickness divisions Over 7 mm to Over 6 mm Over 5 mm Over 4 mm Over 3 mm and excl. 8 up to and up to and up to and up to and mm incl. 7 mm incl. 6 mm incl. 5 mm incl. 4 mm % 30 28 27 26 24 25 24 22 20 19 7 Uniformity of zinc coating Galvanized pipes shall be tested by 11.6 and the num- ber of immersions in the copper sulfate test as given in table 5. In this case, the pipe shall not show a fixed deposit of zinc even after the successive immersing operations of frequency given in table 5. Table 5 Uniformity test Symbol of grade SGP Number of immersions (One minute per dip) 5 8 Hydrostatic test characteristics or nondestructive test characteristics Black pipes shall be tested by 11.7 and the resulting hydrostatic characteristic or nondestructive characteristic shall conform to either of the followings. Though the preference depends upon the specification by the purchaser, when not specified by the purchaser, the pref- erence shall be selected by the manufacturer. a) For hydrostatic test characteristics, when a hydrostatic pressure of 2.5 MPa is ap- plied, black pipes shall withstand it without leakage. b) For nondestructive examination characteristics, a nondestructive examination by either an ultrasonic test on an eddy current test is carried out on black pipes, and there shall be no signal equivalent to or greater than those produced by the artifi- cial defects of the reference test block of division UE of the working sensitivity specified in JIS G 0582 or of division EZ of the working sensitivity specified in JIS G 0583. 9 Dimensions, weight, and dimensional tolerances The dimensions, weight, and di- PROTECTED BY COPYRIGHT 4 G 3452 : 2004 mensional tolerances of the pipes shall be as follows : a) The dimensions, weight, and dimensional tolerances of black pipes shall be as specified in table 6. Table 6 Nominal diameter - A - 6 8 10 15 20 25 32 40 50 65 80 90 1 O 0 125 150 175 200 225 250 300 350 400 450 500 - B - 18 1 1 3 14 4 3 '12 3/4 1 Il4 1 /2 2l12 1 2 3 3'12 4 5 6 7 8 9 10 12 14 16 18 20 - out- side dia- meter mm 10.5 13.8 17.3 21.7 27.2 34.0 42.7 48.6 60.5 76.3 89.1 101.6 114.3 139.8 165.2 190.7 216.3 241.8 267.4 318.5 355.6 406.4 457.2 508.0 Dimensions, weights and dimensional tolerances Tolerances on outside diameter Pipes to be cut in tapei thread *0.5 mm k0.5 mm k0.5 mm t0.5 mm 20.5 mm k0.5 mm k0.5 mm k0.5 mm f0.5 mm k0.7 mm k0.8 mm f0.8 mm t0.8 mm k 0 . 8 mm i0.8 mm I0.9 mm 4 1.0 mm f1.2mm f 1.3 mm i1.5 mm - - - - Remarks 1 For the nomin: Other pipes k 0.5 mm f0.5 mm kO.5 mm i-0.5 mm k0.5 mm f0.5 mm 10.5 mm k0.5 mm kl % f l % i l % it1 % +1 % I 1 % k1.6mm t 1.6 mm f0.8 % 10.8 % k0.8 % f0.8 % I0.8 % 10.8 % 10.8 % f0.8 % Wall thick- ness mm 2.0 2.3 2.3 2.8 2.8 3.2 3.5 3.5 3.8 4.2 4.2 4.2 4.5 4.5 5 .O 5.3 5.8 6.2 6.6 6.9 7.9 7.9 7.9 7.9 Tolerances on wall thickness + Not specified -12.5 % Unit mass exclud- ing socket kglm 0.419 0.652 0.85 1 1.31 1.68 2.43 3.38 3.89 5.31 7.47 8.79 10.1 12.2 15.0 19.8 24.2 30.1 36.0 42.4 53.0 67.7 77.6 87.5 97.4 size, either A or B shall be used, and the symbol of grade A or B shall be suffixed to the figures of nominal size to identify A or B series respectively. 2 For the pipe whose nominal size is 350 A or larger, the toler- ances on the outside diameter may be determined by the measurement of the length of the circumference. In this case, the tolerance shall be f 0.5 %. In addition, when the length of the circumference is used in measuring the outside diameter, either the measured value of the length of circumference or the diameter derived from the measured value may be used as the criteria. In both cases, the same value (* 0.5 % of tolerance shall be applied. The diame- ter (0) and the length of circumference (i) shall be calculated by transposition from the following formula: PROTECTED BY COPYRIGHT 5 G 3452 : 2004 Division Nominal size, 50 A or under Nominal size, 60 A or over up to and incl. 125A Nominal size, 350 A or over up to and incl. 300A Nominal size, 350 A or over I I=n-D where, 71: = 3.141 6 3 In the case where the tolerances on wall thickness are con- firmed to meet the specifications in table 6, the tolerances on outside diameter in table 6 shall not be applied to the local part being subjected to repair, etc. 4 The value of mass shall be calculated from the following for- mula assuming 1 cm3 of steel to be 7.85 g and rounding it off to 3 significant figures in accordance with Rule A of JIS Z 8401. W = 0.024 66 t (D-t) Method of sampling specimen At least one pipe shall be taken from each group of 2 O00 pipes or less of the same dimensions (3) At least one pipe shall be taken from each group of 1 O00 pipes or less of the same dimensions At least one pipe shall be taken from each group of 500 pipes or less of the same dimensions At least one pipe shall be taken from each group of 300 pipes or less of the same dimensi0n.s where, W : unit mass of pipe (kg/m) t : D : wall thickness of pipe (mm) outside diameter of pipe (mm) b) The length of each pipe shall, as a rule, be 5 500 mm or over. The purchaser, how- ever, may specify a length 3 600 mm or over, as necessary. 10 Appearance The appearance shall be as follows: a) The pipe shall be practically straight, and both ends shall be at a right angle to its axis. b) The inside and outside surfaces of the pipe shall be well-finished and free from de- fects that are detrimental to practical use. Especially, the inside and outside sur- faces of the galvanized pipe shall be practically smooth. 11 Test 11. 1 a) The sampling of test specimen and the number of test pieces for the tensile test, the flattening test or bending test, and the zinc coating test shall be as follows: For the tensile test and the flattening test or bending test, take as test specimens as specified in table 7, and take one test piece from each test specimen. Sampling of test material and number of test pieces Table 7 Method of sampling specimen Note (3) The expression “same dimensions” means the same outside diame- ter as well as the same wall thickness. PROTECTED BY COPYRIGHT -,-,- 6 G 3452 2004 b) Either a hydrostatic test or a nondestructive examination shall be performed for each pipe. For the copper sulfate test, at least one pipe shall be taken as the test specimen from each 500 pipes or less of the same dimensions, from which each one set of test pieces (two) conforming to the specifications of clause 5 in JIS H 0401 shall be taken. c) 11.2 Chemical analysis The chemical analysis shall be as follows: a) General requirements common to chemical analysis and method of sampling speci- men for analysis shall be in accordance with clause 8 in JIS G 0404. b) The analytical method shall be in accordance with any one of the following Stan- dards: JIS G 1214, JIS G 1215, JIS G 1253 11.3 Tensile test The tensile test shall be as follows: a) The test specimen shall be No. 11, No. 12A, No. 12B, No. 12C or No. 5 test piece specified in JIS Z 2201 and shall be sampled from a pipe. b) The test method shall be in accordance with JIS Z 2241. 11.4 Flattening test The flattening test shall be as follows: a) b) A test piece 50 mm or over in length shall be cutoff from the end of a pipe. The test piece shall be placed between two flat plates at ordinary temperature and flattened by compression until the distance between the plates becomes the speci- fied value, and shall be checked for the occurrence of flaws or cracks on its wall surface. In this case, the weld shall be placed at right angles to the direction of compression as shown in figure 2. L s Direction of compression d i 42 E cd Figure 2 Flattening test 1 1 . 6 Bend test The bend test shall be as follows: A test piece with an appropriate length shall be cut off from the end of a pipe. The test piece shall be bent at ordinary temperature through the angle around a cylinder with the inside radius specified in 6 . 3 , and shall be checked for the occur- rence of flaws or cracks on its wall surface. In this case, the weld shall be placed at approximately 90“ to the outermost bent portion. PROTECTED BY COPYRIGHT -,-,- 7 G 3452 : 2004 1 1 . 6 with JIS H 0401. Zinc coating test The copper sulfate test of zinc coating shall be in accordance 11.7 Hydrostatic test or nondestructive examination The hydrostatic test or nonde- structive examination shall be in accordance with either a) or b) below. a) When the pipe is subjected to hydrostatic pressure and kept under the specified pressure, its strength to withstand the pressure without leakage shall be exam- ined. b) The test method of nondestructive examination shall be in accordance with either JIS G 0582 or JIS G 0583. 12 Inspection 12.1 Inspection The inspection shall be as foll