标准 Standard
BS 1868; ASME B 16.34; API 6D; API598; ASME B 16.5; ASME B 16.25; ASME B 16.11; ASME B 16.10; ASME B 16.34; BS1868
控制方式 Control Type
手动,齿轮,电动
Manual, gear, electric
制造工艺Manufacturing Process
锻造 Forging