
BS EN ISO 15614-1 AMD2. Specification and qualification of welding procedures for metallic materials. Welding procedure test. Part 1. Arc and gas welding of steels and arc welding of nickel and nickel alloys
出版:British Standards Institution

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BS EN ISO 15614-1 AMD2. Specification and qualification of welding procedures for metallic materials. Welding procedure test. Part 1. Arc and gas welding of steels and arc welding of nickel and nickel alloys
出版:British Standards Institution
专家解读视频