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English Translations » 信息处理 » Seek standard HG21631-1999 steel welded butt pipe fittings

Seek standard HG21631-1999 steel welded butt pipe fittings

2010-03-20View Original

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This post was last edited by ptfll on 2010-3-22 at 10:14. Who has this standard: HG21631-1999 for steel welded butt fittings? Please upload one.
Reply #22010-03-21
The current standard is the 1990 version; the forum can be found at: http://bbs.hcbbs.com/viewthread.php?tid=5428&highlight=21631

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Translated at 2026-07-27 06:07:03

Original: https://bbs.hcbbs.com/thread-636253-1-1.html

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