HG/T 20592  法兰 WN 500-16 RFS=5.6

SO 200-300 RF.7 f.42Sc0M@�7.5F¢

WN500-16RFS=5.6

3 B30=80R3

1 RF 450-1.6/60

wn40(b)-300 rf a

PL 100(B)-16 RFb/RF

47023 FM900-1.6-C

so125(B)-150rf12oFF

WN800-10 M000-150 r

so32-150rf b0 RRFrf b=160 RF RC4050RM2.5/5F Sch80S b=foru0S2 /u0´=6RFBL100-6