NB/T 47021  法兰 FM 500-1

NB/T47021 FM500-1

WN 50-300 RF Sch40/data

SO 500-150 RFRF SCH40SS=/M S

wn350(b)-63 rf

WN 2 1/2"-400 RF Sch40S

SO 150(B)-10 TF5 RJ RF

WN325B-16RF0 RJ

WN20(b)-63FMF2F&@п�=1016

47023 FM 1900-2.5-25FM5RF

wn400-600rfM6/64FrF/-12 RF S=1�¬Â¦�