NB/T 47021  法兰 M 1400-0.6/20δs=12

1 M 1400-0.620δs=12

WN 3/4"-150 RF f=1.6 R2=3 R1=4.5 O=98.8 W=6

pl 300(b)-6rff16031 RFF2

DN20/PN25/11A Sch80h1rf s

WN 65(B)-100 FM S=63S0rf6/F-2500 R

JWN 50×80(B)-63 RF S=5S=32FF-20RJRF16F

pl350(b)-10 rf0-

BI 406JchB/-111

WN32(B)-40 FM=400

So2