GB/T 12459  弯头 DN 125-Sch6090EL376a21S1065

DN 125-Sch60 90EL376a21S1065

WN100(B)-100 RF S=13

BI 900RFFR RJF S ScF- C5an80�7

3 FM 1500-2.5

WN 50-150 RF Sch4

WN450(B)-16M5

bl10-25rf150r

BL 4"-150 RF-25rf1405 RF6F5RF

BII 2800fFf0rfBB=

3 RF 1600-1.6 δ0=16/hgRF=5) R)-150rf065F15B/1=23 d=0