法兰 WN 450-10 RF)-16470mpa=5.650-

WN450-10RF)-16470mpa=5.650-

47023 RF550-1.6/70-1650R

bi 900-s/1rf/@WN15B-16RF Sch400RF S00(B)-10 RF-1.0R100

NB/T47023 fm1300-10

LF/SE 20-150 RF Sch40SF D

WN250-300MF8 1件300 RSf

PL80(B)-16 RF=4

SO 40-150 RF TURFF1000-1.6-380 δt=20 H=158

WN80-