HG/T 20592  法兰 PL 80(B)-16 FFF=CH-400 RF950r0-

PL80(B)-16 FFF=CH-400 RF950r0-

PL65(a)-16RFn50(b)-10 rf s=.6-6

WN25-40 G Sch10S000-1rSCH60ampquo25

wn 100-150 gs249800H=3.6-6

WN100-150RF B=289 RF B=572

BL600-150RFRF00b4=60 h=s

BL50(B)-16RF3.4091u00e=71F6/84

PL 80(B)-16 RF0(B)-140am RF)-1=

wn20-150