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GB/T 3639-2009 Seamless cold-drawn or cold-rolled steel tubes for precision applications

Standard Number:  GB/T 3639-2009
Title:  Seamless cold-drawn or cold-rolled steel tubes for precision applications
Language:  Simplified Chinese
Publication Date:  2009/10/30
Execute Date:  2010/5/1
Status:  Current
Standard Type:  Product
International Classification for Standards (ICS)METALLURGY>>Iron and steel products>>Steels pipes and tubes for specific use
Publisher:  Chinese Standards(GB)
Number of Pages:16  

Preface: Modified using this standard EN 10305  1:02 "precision USES steel technical conditions of delivery Part 1: cold drawn seamless steel tube "(English version). According to this standard EN10305  1:20 02 redraft, this standard is given in annex A chapter article number and EN10305  1:20 Article chapter 02 numbered reference list. In adopting EN10305  1:02, made some changes to this standard. The technical differences have been codified in the text and in their terms and conditions of the involved with the vertical single identification on the margin. Is given in appendix B technical differences and the reasons of these list for your reference. For ease of use, the EN10305  1:20 02 also made the following editorial changes: A) the word this European standard to this standard; B) use the decimal point. Instead of as a decimal point,; C) delete EN10305  1:20 02 standard introduction, increased the preface of this standard. This standard instead of G B/T3639-2000 "cold drawn or cold rolled precision seamless steel tube". Compared this standard with GB/T3639-2000, the main changes are as follows: - revised classification code; - increases the content of the order; - changed the steel tube bending; - remove the tag sample; - increased Steel grades; - changed the steel smelting method; - remove the tube billet manufacturing method; - the mechanical properties of modified the steel pipe; - increases the flattening test; - increases the flaring test; - increases the magnetic flux leakage testing; - increased standard appendix A, appendix B, appendix C, the appendix D. The appendix A of this international standard, appendix B, appendix C and appendix D for informative appendices. This standard put forward by the China iron and steel association. This standard by the national standardization technical committee under centralized steel. This standard is responsible for drafting unit: baoshan iron and steel co., LTD. Attend this standard drafting unit: jiangsu FengLi precision steel pipe co., LTD Department of special steel pipe co., LTD., jiangyin industry. Main drafter of this standard: yu-qing luo, Zhang Yaofei, cai-ling liu, Wu Yueming, jian-liang xue, Chen Weichi. This standard replaced all previous releases of standard: GB/T3639-1983, GB/T 3639-2000 Cold-drawn or cold-rolled precision seamless steel tubes.   
Description:This standard specifies the classification of cold drawn or cold rolled precision seamless steel tubes, symbol, size, shape, weight and allowable deviation, technical requirements, test methods, inspection rules, packaging, mark and quality certificate.
this standard is applicable to manufacturing the mechanical structure, hydraulic equipment, auto parts with special high dimensional accuracy and surface quality requirement of cold drawn or cold rolled precision seamless steel tube.
Cross References:,,,,
File Format:  PDF(Acrobat Reader) or Word version doc Document
File Size:  431KB
Tile in English:  Seamless cold-drawn or cold-rolled steel tubes for precision applications

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