弯头 DN 25-Ⅱ-690EL H=1605

DN 25-Ⅱ-6 90EL H=1605

WN 300-40 M16150rf sCH40Ff4

WN 20-300 G Sch80

PL40(B)-6 RF B1=49 d=78

GB/@BL100-300 RF

wn150(b)-16 rf s=5 s31603ii 3片

So600B-10 RF S=600-1.0 δ

DN 50-Ⅱ-8 90EL

BL25(B)-16MELschRF-10

WN300(B)-16RF/S=10/5

wn50-40g f2

bl100-2