lybro 发表于 2009-7-13 10:01:57

ASTM A 53-2002

ASTM A 53-2002
Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless
无镀层热浸的、镀锌的、焊接的及无缝钢管的技术规范
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