HG/T 20592  法兰盖 BL 25(B)-63 RF S==2=8 Sc6RFB)6 RFch4025FF0sTDc6F b=4Fr-16pschotS=3

BL25(B)-63 RF S==2=8 Sc6RFB)6 RFch4025FF0sTDc6F b=4Fr-16pschotS=3

bl350-63m9=F/

DN 50-4 90EL

WN 250(B)-25 RF S=8

B WN 40"-300 RF s=30

bl300-100fmF-168.9116Rh40L/

TH 4"-150 RF

WN 50-63rf

bl200-10ff d12 H/

WN50(B)-63RFSch40-6 rf10t16/5400(b);