Home / Standards / GB/T 11698-1989 GB/T 11698-1989 Abolished Metal valves for use in marine flanged pipe systems--Face-to-face and centre-to-face dimensions 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 废止 Issue Date 1989-10-14 Implementation 1990-05-01 Responsible Dept 国家标准委 Drafting Unit N/A