NB/T 47022  法兰 C-FF 500-4.0=B-20 RF S=457 D=121b

47022 c-ff500-4.00=B-20 RF S=457 D=121b

wn125-150rfs=710

WN100(B)-16RF sch40S

WN 50-63t70=3 f1=3-25 RFru

WN150(B)-40RF000=3 f1=3-25 RFru

WN150-25RFfm 400-)0.S0a-4./FR

BL 250-300 FF0-1.0B=00-0083/u00c6/u0092/u00c3/data

WN 50-150 RF)16 A=60.5 S=/2l

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