NB/T 47022  法兰 RF 650-0.6/20δ1=16

2 RF 650-0.620δ1=16

WN 20(B)-100 FM S=3.5r

5 M 1200-2.5F=�-1 W

HP-65mpned=43 f

BL 50B-16 RF0 8m6RF RRf6baM.6/

PL25(B)-16 RFc-rf1000-0.6F Scr

WN125(B)-25 RF S=6.R60

4 B510RF-16rf00=5.6w/60-15-

WN 250(B)-16 RFd= L5(B16F Sch4hg=t20592-200 RF/0

so15(b