HG/T 20592  法兰 WN 40(B)-63 RFBL RF Ⅱ4/ 2.5 R-15mp

WN40(B)-63RFBL RF Ⅱ4/ 2.5 R-15mp

WN250-300 M sch so65-150 rf0-1.6/

wn50-600rf sch1200RF�14schF-1.0623 M 30

so 200-150 RFch80Sc50RF /

PL65-16FF b=150 RFRF6 rf c‚â´1=8am

wn50-40rf B607 A=1

pl50(a-16 rf 22л┐┬Е

47021 c-rf1000-0.6&ampamp;