HG/T 20592  法兰盖 BL 200-10 FF100-1.62(0)-25

bl200-10ff100-1.62(0)-25

WN50B)-25 fM00A000-56Sc2@RF@ Sch40F b=3FF0h400-1@0�-R RRF-6.4S=7RF3

WN 20(B)-16 RF S

WN 40-25 RF Sch80/data

3 RF 1300-2.5 δ0=18-b=1007F Sch40S sch46G5 RJSc

WN 50-300 M Sch807 AA=00-2.

BL200-300RF50RF Sch2==1R

wn80(b)-150