HG/T 20592  法兰盖 BL 15-100 RF9SA)RF6 RFRF Sc S-161

bl15-100rf9SA)RF6 RFRF Sc S-161

DN 300×300×90-Sch160 TR

PL 65(B)-16 RFw£

SO 20(B)-16 RF

DN 400-12.7 90ES0/s

47021C- FM500-1.06 H=62 �r6/u07S=1479360F)-20/6rf/invoker/jmxiMRFrff

WN 300(B)-16 RF S=10

pl50-10rf o6/

SO 500(B)-16 RFrf sch80s h1b)-