HGJ 223-1992 Technical specification for welding and brazing of copper and copper alloys

This standard specifies the size, performance parameters, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of copper-aluminum composite column wing-shaped radiators, which are formed by expanding and bonding copper tube columns and aluminum wing tubes and then welding them to upper and lower copper tube headers. HGJ 223-1992 Technical Specification for Welding and Brazing of Copper and Copper Alloys HGJ223-1992 Standard Download Decompression Password: www.bzxz.net

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