HG/T 20592  法兰盖 BL 400(B)-10 RFb/ch4049 rf900

bl400b-10RFb/ch4049 rf900

WN 80-150 RF B=2

WN 200(B)-25 RF S=8-9h4.510 H1= h-FGFScSch.80S558 B=101.55

BL 2 1/2"-150 RF=81

WN 50(B)-100 RJ S=65

WN 80-25 RF RF Sch40S80

WN 200(B)-63 RF S=4.

WN 80-300 RFRFS=600-150 SFM≥6.0RFRS=1

WN 200(B)-63 RF S