HG/T 20592  法兰盖 BL 25-25 RF=40 RF S500M S=1mpampaF4RF B=425 H=45.5F

BL 25-25 RF=40 RF S500M S=1mpampaF4RF B=425 H=45.5F

1 M 400-1.6 δs=6

pl50(b)-16 rf d=102 b=5-(b)-25d=15

WN15(B)-160RF

BL500-40RFFFSAR0 RF S=6=B=ampampampampa

wn25-300 t1500-2mRF)-40

WN40(B)-25 RF S=10/BB=1200

WN 25(B)-25 RF S=2.

BL 1"-150 RF

BI