NB/T 47021  法兰 C-M 1600-1.0/20δs=6/6-174/0RFF09b= n=3-5 h=8604

1 CM 1600-1.020δs=6/6-174/0RFF09b= n=3-5 h=8604

WN 200-300 RF f1=4.8 A=159 S=5

1 FM 800-1.0=656 b=250-30My=50 d=2B)-htmRFs=4016

SO50(b)-40 FM=4109S=S

PL140(B)-16 RF0rB6

WN350-600RJ- RFRF-4

SP-5 δ=12 S1=120010ch40SF Sch40S1=

WN40-300 FM

wn50-1500 rf