[国外标准] BS 5973-1993 Code of practice for Access and working scaffolds and special scaffold structures in st
[航空标准] HB 5971~5973-2008 21MPa无扩口直通管接头
[国家标准] GB/T 5973-2006 钢丝绳用楔形接头
[国家标准] GB 5973-1986 钢丝绳用楔形接头