阀门及零件 meaning in English

standard specification for forged or rolled uns

Specification for forged or rolled alloy - steel pipe flanges , forged fittings , and valves and parts for high - temperature service
高温设备用锻制或轧制合金钢管法兰锻制管件阀门及零件规范
Standard specification for forged or rolled alloy - steel pipe flanges , forged fittings , and valves and parts for high - temperature service
高温设备用锻制或轧制合金钢管法兰锻制管件阀门及零件的标准规范
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配件阀门及零件用碳素钢及合金钢锻件的标准规范