NB/T 47023  法兰 FM 900-4.0/5F.2 K=298.5 LcM5rf RF,S=6B)-25 FMn50

3 FM900-4.05F.2 K=298.5 LcM5rf RF,S=6B)-25 FMn50

PL400-16 RFF=2=6Rampampampampampamp.6-96FRF SCh40s H00ch160f-15

wn10b-40m-610f d=100-3C0pampamRFch3060S/ H=130-40

1 RF 450-1.6 δs=5-150 RF B=Sch10S0dRmpam

WN25-300 RF S=2.9000-1.02.96 d=120 n=4-16

2 F