NB/T 47023  法兰 FF 2800-4.0/20δ0=80=60810-

3 FF 2800-4.020δ0=80=60810-

bl100-40 RF-000/26404 D

BL500-900M30.5F=540

pl80(B)-16rf f1=3 b

WN 80(B)-16 RFc1=1440.6FRJ5RF1=6F/0=300-10

5 FF 1750-6.42ampampampampamps=155

WN 100(B)-25 RF S=5F s=14F S=10

wn125-600FM00-150RFF ScB)-16 RF8.6wn25-400

wn20