HG/T 20592  法兰 PL 80-6 RF b=3 AA=621000-1

pl80(a)-6RF b=3 AA=621000-1

WN150(B)-150FF S=3.5 H=108 C=45 H1=10

WN25-150 RF Sch80 HG/TS10@0b-6320s604

WN25-40G S=3 f3=3 f2=4.

47023 fm400-2.5 �0-15F D0c6 S=40

WN20(A)-40 M S=4.5

WN350-600 G BoJ RFRF5arffc

HP-2 п╟п┘п╒ch3010S=9

WN150-30