Q347, Y, F, American Standard worm gear forging steel natural gas pipeline ball valve design standard:
Design and manufacture in accordance with standards: GB12237;
According to the structural length: GB12221;
Connection dimension according to: JB/T79, GB9113, HG20592;
Inspection and testing in accordance with JB/T 9092, GB/T13927;
American standard gas ball valve design standard:
Design and manufacture in accordance with standards: ASME B16.34, API6D etc.;
Structural length according to : ASME B16.10;
Connection dimension according to: ASME B16.5, ASME B16.25;
Inspection and testing in accordance with: API598;
Fireproof design according to: API607;