[下载] 钢熔化焊对接接头射线照相和质量分级GB 3323-87 Post By:2005-11-2 16:15:00 [只看该作者]
中华人民共和国国家标准
钢熔化焊对接接头射线照相和质量分级GB 3323-87
Methods for radiographic inspection and 代替 GB 3323-82 classification of radiographs for fusion welded butt joints in steel
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GB3323-87
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