HG/T 20592  法兰 PL 200-16 FFH0fF=140)-100 RF S=6rf-1

PL200-16FFH0fF=140)-100 RF S=6rf-1

LWN 50-300 RF H=328

47021 rf 400-1.0/3RF b=4F RF Sch80315=170hFF00.F Sc=1

BL350-16 RF20(00mp625M-hg/t0n=4l=194.

bl350-6fmS=6RFF00-1.096c3/-2350RCH1600 k=10

aWN 700-150 RF

bl25b)-150 rfS=36 nH40S0

BL125(B)-25 m

bii