阀门标准 AS 1357.1-2009 Valves primarily for use in heated water systems – Part 1 Protection valves.pdf [db:摘要]
阀门标准 AS 1357.2-2009 Valves Primarily for use in Heated Water Systems – Part 2 Control Valves.pdf [db:摘要]
阀门标准 BS 1868-1975(R1990) Steel check valves(flanged and butt-welding ends) for the petroleum,petrochemical and allied industries.pdf [db:摘要]
