GB/T 12459  弯头 DN 20-Sch40S45EL

DN 20-Sch40S 45EL

WN 100(B)-25 RF S=7 A=115

bl40-63fm402.5sp012-1

SW 40-150 RF

PL132-16RFSF RF

WN15(B)-63 RF S=2

WN 15-600 RF S=4.5

SO200(B)-600 FF/5b260 R/=2FR

pl250b)-16rf d=

WN150-150 RF Sch406r406 mp0 Rh40SRFd=040sFfsourc160 n0s=4-82F0F ，65F164