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 MSS SP-85-2002 法兰端和螺纹端灰铸铁截止阀和角阀 GRAY IRON GLOBE &ANGLE VALVES FLANGED AND THREADED ENDS.pdf [db:摘要]
