NB/T 47022  法兰 G 500-1.0/20δ1=81=60(b)

2 G 500-1.020δ1=81=60(b)

WN125(B)-40 RF

pl250-10rfSch TJF=85-RF202 sch416b=325/forum5-0.

WN125B-25 FM/4F1=117 H=

B WN1000-300 RF)R00 RF)-10rfLv��

20615WN50-300M9rf500-6 M

WN50(B)-63RFokerseS5i= B276 RF-

47023 fm500-2.5/40-1235100-4b)-5/

PL100-10