NB/T 47022  法兰 RF 2400-0.25

2 RF 2400-0.25

WN40B)-150 RF2) 1Sch80Sch4/FG/u60(B.0=83HG/T20615RF

WN 350-300 RF SCH600h schnWN100b

SO 18"-900 FF0 wn45

LWN50-300 RF Sch40g/ RF

PL500(a)-16RF2-12 RFFf8 s

PL25(A)-40 RF sch.0ch1

WN250b-16 RF00(B)-1Fetm sc H

47023 RF650-1.0

BL50-15