JIS B2011-2004 Bronze gate globe angle and check valves(Amendment 1).pdf JIS B2011-2009 Bronze gate globe angle and check valves(Amendment 2).pdf 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