JIS-G-3452-2004-ENG.pdf
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1、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 origin
2、al 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 draf
3、t 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 Stan
4、dard 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
5、 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-
6、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,
7、 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, electroni
8、c 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 Mech
9、anical 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 Chemi
10、cal 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 . . . . (
11、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
12、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 thi
13、s 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 pip
14、e 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 be
15、vel 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, tape
16、r 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 o
17、ther 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 cle
18、aned 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 E
19、longation % 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 nomi
20、nal 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 p
21、iece 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
22、 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 minut
23、e 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
24、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,
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