Home / Standards / GB/T 10878-2011 GB/T 10878-2011 Active Special taps of taper threads for gas cylinders 气瓶锥螺纹丝锥 Standard Type GBT ICS 23.020.30 CCS J74 Status 现行 Issue Date 2011-12-30 Implementation 2012-07-01 Responsible Dept 国家标准委 Drafting Unit 国家标准委