Home / Standards / GB/T 193-2003 GB/T 193-2003 Active General purpose metric screw threads--Generalplan 普通螺纹 直径与螺距系列 Standard Type GBT ICS 21.040.10 CCS J04 Status 现行 Issue Date 2003-05-22 Implementation 2004-01-01 Responsible Dept 国家标准委 Drafting Unit N/A