HG/T 20592  法兰盖 BL 500-16 RFT20Sa)-16rf6RF37

BL 500-16 RFT20Sa)-16rf6RF37

a105 hg/@b wn1000-150 rf

wn10-16gã¯b1so65F--23668-RF.5 RJ

WN 50(B)-10 RF10rfRFS=6RF16 RF S

so25a-300rf-59nG/T/0RF15”

SO 20-1500 RF B=18.5

WN 300-300 RF Sch60g/fo21RFn0 S

WN 40-300 RF S=25Ssch60& S

WN250-150RF SCH10Srf