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[国外标准] AWS B2.1-1-018-2021 碳素钢的药芯焊丝电弧焊的标准焊接工艺规程,(M-1P-1S-1,G1和2组),18到1-12英寸厚,E71T-8,焊接情况下网页执照
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[国外标准] AWS B2.1-1 8-014-2002 碳素钢到奥氏体不锈钢的气体金属弧焊的标准焊接工艺规程,(M-1到M-8P-8S-8,1组),18到10仪器,在焊接情况下,带或不带网页执照支持
202.22 KB2020-11-28