兑水 发表于 2009-11-10 15:05:03

ASTM E 1955-2004 对照ASTM E390标准射线照片对钢材的焊接...

E1955-04 Standard Radiographic Examination for Soundness of Welds in Steel by Comparison to Graded ASTM E 390 Reference Radiographs
页: [1]
查看完整版本: ASTM E 1955-2004 对照ASTM E390标准射线照片对钢材的焊接...