GB/T 12459  弯头 DN 20-Sch10S90ES

DN 20-Sch10S 90ES

PJ/SE 300(B)-16 RF S=3

WN 2"-300 RF S=8.74

WN 300-300 RF S=9.5

wn200(b)-25rfs=6

A BL 16"-600 LM00

WN FF 16K 125A S=9.5

wn150-150 rfã=60 h

BL450-10RF

WN 150-16 RF R7.5 RJ�เธ@AFRF S=50Â�F.B=RJ@6R102@69960a1.5��