Home / Standards / GB/T 1953-2008 GB/T 1953-2008 Active Marine low pressure bronze male threaded stop check valves 船用低压外螺纹青铜截止止回阀 Standard Type GBT ICS 47.020.30 CCS U52 Status 现行 Issue Date 2008-08-04 Implementation 2009-02-01 Responsible Dept 国家标准委 Drafting Unit N/A