Home / Standards / GB/T 40516-2021 GB/T 40516-2021 Active Metal valves for use in marine J-flanged pipe face-to-face and centre-to-face dimensions J类船用法兰连接金属阀门的结构长度 Standard Type GBT ICS 47.020.30 CCS U50 Status 现行 Issue Date 2021-08-20 Implementation 2022-03-01 Responsible Dept 国家标准委 Drafting Unit N/A