Home / Standards / GB/T 12239-2008 GB/T 12239-2008 Active Industrial valves - Diaphragm valves made of metallic materials 工业阀门 金属隔膜阀 Standard Type GBT ICS 23.060.99 CCS J16 Status 现行 Issue Date 2008-12-23 Implementation 2009-07-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A