HG/T 20592  法兰盖 BL 200-40 FF00-0.25fof00(B)-

bl200-40ff00-0.25fof00(B)-

pl25B)-10RF g60r6/�ÃFM S0 RF1290

wn80-150rfsch1601400-10F0-60=CH

BL150-150 RF55�=16f

WN 80(B)-16 RF

PL 500-2.5 RF

LWN40-300 RF Sch60j

SO 1"-150 FF

WN 250(B)-16 RF S=8

SO 80-300 RF0S16 RFFF C=100=156+5 B=15.580e4h