GB/T 12459  弯头 DN 80-SCH2090ELRFF RF��š´s= SR

DN80-SCH20 90elRFF RF��š´s= SR

BL450-600 ffs=6206151.0/95-155=33RF

PL 50(B)-10 RF B=BSPT 2&q

1 BL450(B)-16FF/

PJ/SE 25(B)-25 RF-120F

BL 200-10 RF80(B)-16RF

LF/SE 150-150 RFδ0=6R

WN150-300RF.6fm6 S=10=00/654h511-16RF5FSch8R FM-FNF-16RFh4-1p50r4