Home / Standards / GB/T 12716-2002 GB/T 12716-2002 Abolished Pipe threads with the thread angle of 60 degrees where pressure-tight joints are made on the threads 60°密封管螺纹 Standard Type GBT ICS 21.040.30 CCS J04 Status 废止 Issue Date 2002-03-10 Implementation 2002-08-01 Responsible Dept 国家标准委 Drafting Unit N/A