Home / Standards / GB/T 20334-2006 GB/T 20334-2006 Active Ground thread taps for pipe threads G series and Rp series - Tolerances on the threaded portion G系列和Rp系列管螺纹磨牙丝锥的螺纹尺寸公差 Standard Type GBT ICS 25.100.50 CCS J41 Status 现行 Issue Date 2006-07-20 Implementation 2007-01-01 Responsible Dept 中国机械工业联合会 Drafting Unit 中国机械工业联合会