Specification and qualification of welding procedures for metallic materials - welding procedure test - resistance butt and flash welding 金属材料焊接程序的规范和鉴定.焊接程序试验.电阻对接焊和电弧对接焊
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Specification and qualificationl of welding procedures for metallic materials - welding procedure test - part 13 : resistance butt and flash welding 金属材料焊接过程的规范和鉴定.焊接过程试验.第13部分:电阻对焊和电弧对接焊