HG/T 20592  法兰 PL 100(B)-16 RF d=310RF=50)10 RF ScfF P1FRF-RF-166/4

pl100(b)-16 rf d=310RF=50)10 RF ScfF P1FRF-RF-166/4

WN100(B)-160 M/)-16 R

WN500-150RFr0592)00.0=1221

PL 40(A)-16 RF rfrf1000-1-16FF0m.html

bl250-160rjHc0HGBF sch3

SO 20(B)-6 RF120-4-150 RF S RF6F14F5Fch40F0 RF-60

DN40/PN40/01BC=17040F H08)-10rf

SO150