兑水 发表于 2009-9-10 19:59:30

ASTM A 1005-2000 双埋弧焊、带纵向的和螺旋状的缝、平头...

A1005/A1005M-00e1 Standard Specification for Steel Line Pipe, Black, Plain End, Longitudinal and Helical Seam, Double Submerged-Arc Welded
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