
EN 10253-3. Butt-welding pipe fittings. Part 3. Wrought austenitic and austenitic-ferritic, duplex, stainless steels without specific inspection requirements
出版:British Standards Institution

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EN 10253-3. Butt-welding pipe fittings. Part 3. Wrought austenitic and austenitic-ferritic, duplex, stainless steels without specific inspection requirements
出版:British Standards Institution
专家解读视频