法兰 BL 400-6 RF b=3 d

BL400(a)-6RF b=3 d

NB/T47023-2012 -RF 900-1.6

WN20(B)-16 RF40S¥C=220 s=F sÃ80-1b=50.716

wn150-2500rjs150r

BⅡ180-0.25 S=6A=168.3 S=14 H1=71.6/-0.6δ=4

WN 40-150 RF=16.2S心 H

pl25(a)-16 rf b=3-1.

WN80(B)-16 RF S=3.5 0-4.0/fo

BL400-150RFCHh1

PL600-