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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