HG/T 20592  法兰盖 BL 80-10 FF

BL 80-10 FF

PL 100-16 RF

wn250-25rfs=12

DN40/PN16/05B

WN25-2500 RF

1 M 600-1.0 δs=5

WN 150-300 RF B=140

BL 450-16 RF

1 FM 600-1.0 δs=5

SO 4"-150 RFRFh40Sch5 SchF S=4 ch800 RF Sch7618-10RF8A1101�@0fF Sc 500-16 mSch800RF0 RFa@RF@ RJ250FBB030 f