HG/T 20592  法兰 PL 10(B)-40 G‚â 500f/@SO100(B)s/6/S.4F-1

pl10b-40g‚â 500f/@SO100(B)s/6/S.4F-1

WN80-16RF2RF31RF/u5ampB)s/6/S.4F-1

PL25(B)-10 RF b=4 s0540s么意ã�

BL 600-600 RF0b=2F6 RF10RFRFJ Sch20020Sch403.5S=3.516 RFRF1=

3 RF 1600-4.0 scF RFN6

WN 25-10 RFfm..65.480f940/uSCH40F-40

WN 100-300RFB)FB