承压设备用碳素钢和合金钢锻件
Carbon and alloy steel forgings for pressure equipment
2017-03-28
ASTM A694/A694M-16(2022)
Standard Specification for Carbon and Alloy Steel Forgings for Pipe Flanges, Fittings, Valves, and Parts for High-Pressure Transmission Service
高压传输设备用管法兰、管件、阀门和零件用碳素钢和合金钢锻件