Home / Standards / GB/T 21387-2008 GB/T 21387-2008 Abolished Aaxial flow check valve 轴流式止回阀 Standard Type GBT ICS 23.060.50 CCS J16 Status 废止 Issue Date 2008-02-02 Implementation 2008-07-01 Responsible Dept 中国机械工业联合会 Drafting Unit 中国机械工业联合会