HG/T 20592  法兰 WN 100(B)-25 RFRF=140 C=16 H=39956RFRF168 C1æ=

WN100B-25RFRF=140 C=16 H=39956RFRF168 C1æ=

1 RF 600-1.020erv

1 FM 600-1.080B-

1 G 800-0.6-1.6= h10F85 RF6=40b0/u.F60090 f1=2.50-16=

1 RF 800-1.0 вҖ

2 G 400-1.020δ1=80TRJ TB)0600(b)-s/

1 RF 800-1.05/525RF-=1511F-8040-2

1 RF 1000-0.6RF

1 RF600-0.