等径四通 DN 50-Sch80SCRS=

DN 50-Sch80S CRS=

SO500(B)-16RFL=-303.ch4

WN250-1500 RJ

SO50B-16 RF 40RF1500-0.6/70-165 SO 80

so450(b)-16rf sïà B=42.70-6rF=4 sch40

LWN150-300 RF Sch80S，H=2

LWN125-150 RF50-1rf6RF500 RJ SN600(B)

BI 600-1500 RFS-16RFM Sch80 Sc

WN100-300RF S