Home / Standards / GB/T 12839-1997 GB/T 12839-1997 Abolished Tyre valves--Terms and definitions 轮胎气门嘴 术语及其定义 Standard Type GBT ICS 83.160.01 CCS G41 Status 废止 Issue Date 1997-10-14 Implementation 1998-04-01 Responsible Dept 中国石油和化学工业联合会 Drafting Unit N/A