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回复:GBT6417.1-2005金属熔化焊接头缺欠分类及说明

it is very great. it is available for us to inspect weld structure during works.‡YT!]±H?Ýbbs.3c3t.com克%Í̝
thank you very much.‡YT!]±H?Ýbbs.3c3t.com克%Í̝