
EN 34113 GAS WELDING EQUIPMENT - RUBBER AND PLASTIC HOSE ASSEMBLIES FOR COMPRESSED OR LIQUEFIED GASES UP TO A MAXIMUM DESIGN OF 450 BAR
出版:British Standards Institution

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EN 34113 GAS WELDING EQUIPMENT - RUBBER AND PLASTIC HOSE ASSEMBLIES FOR COMPRESSED OR LIQUEFIED GASES UP TO A MAXIMUM DESIGN OF 450 BAR
出版:British Standards Institution
專家解讀視頻