船用阀门及管路附件的标志
Marks for marine piping valves and fittings
2014-02-19
GB/T 600-2023
船舶管路阀件通用技术条件
General specifications for marine piping valves and fittings
2023-03-17
ASTM A338-84(2022)
Standard Specification for Malleable Iron Flanges, Pipe Fittings, and Valve Parts for Railroad, Marine, and Other Heavy-Duty Service at Temperatures Up to 650 °F (345 °C)
温度高达650℃的铁路、船舶和其他重型设备用可锻铸铁法兰、管件和阀门零件 华氏度(345 °C)