阀门标准 BS 5351-1986 Specification for steel ball valves for the petroleum, petrochemical and allied industries.pdf [db:摘要]
阀门标准 BS 7350-1990 —ouble regulating globe valves and flow measurement devices for heating and chilled water systems.pdf [db:摘要]
阀门标准 BS 7438-1991 Steel and copper alloy wafer check valves, single disk, spring-loaded type.pdf [db:摘要]
