Home / Standards / GB/T 1855-1993 GB/T 1855-1993 Abolished Marine flanged cast iron single arrangement suction stop check box valve 船用法兰铸铁单排吸入截止止回阀箱 Standard Type GBT ICS 47.020.30 CCS U52 Status 废止 Issue Date 1993-05-24 Implementation 1994-01-01 Responsible Dept 国家标准委 Drafting Unit N/A