HG/T 20592  法兰 WN 250-63 RF S=6F S=5=5=5150050F

WN 250-63 RF S=6F S=5=5=5150050F

WN200-150 RF,Sch40 S=��

SO 150-16 FFan-drawing-10 RF S=57.6 scRFR0-150 RF H=230==815-amp6080h80�Б bf RJ12f0R=7ampa427 hFc

WN500(B)-16 RFF ⅡRFFS=5.0F-15-

WN 150(A)-100 M S=

PL 200-25 RFRF4F1/FrfF60649o15

WN 30