HG/T 20592  法兰盖 BL 25 -40 M50 FM0-1M50m/-300 rf R=20040RFb=

bl25 -40m50 FM0-1M50m/-300 rf R=20040RFb=

PL200(B)-10fF0F145F0RF0Rsch80shRF0s, S=10FM FM300 RF Sch80 f=1.8

WN40-150FM S31603.610 s=8=3

SO 150-150 RFsa6 b=4/

WN 50-300 RF S=5.6 t10RFF 90�Žš2 RF Ⅱ b=3orum

47021 m300-1.6623.7M60.4/40-9F

so200-150