HG/T 20592  法兰盖 BL 300-40 G76b)-20

bl300-40G76b)-20

2 CM 600-2.520δ1=18500RF

BI 700 h=238=FF8 rf1.6/

wn80-25rf s=10.5 &ampampampampampnbsp

3 RF 600-1.0

WN 800(B)-10 FMh3)-16 RF Hm-Œ ذ±

WN40-16RF S=18.34.1 S=300-sch80 RF S/C

wn100-25 rfR25RF)-)

wn100b-600rf s=53fnS=1.0R120f b=