弯头 DN 300-890EL.01=T21FRFRFJ=70/900/6F¦Å“Â/(B)-1/sch5 rf sh

DN 300-8 90EL.01=T21FRFRFJ=70/900/6F¦Å“Â/(B)-1/sch5 rf sh

HG/T 20615-2009 WN50-150 RF S=≥8.100-2

WN100-600 RFS

3 FM 400-1.0/34-95 h=61

PL80(B)-6RF b=4/

BL 25-900 RJ

WN400-150RFFS6000-10/T9112720 δ1=14sch80sC-R

b WN1000-150RF

WN25-2500 RF RJ