NB/T 47022  法兰 C-RF 300-1.0/20δ1=10

2 CRF 300-1.020δ1=10

PL200(B)-16RF52500-17vN50/mp0r

pL100(B)-6 RF001m=12.61

1 CRF 1300-0.25 δs=10F S

so50-150 rf b=510

PL400(B)-10 FF50 RF S=6RF

47008 lwn100-600 rj sch80

1 RF300-1.0 D=1f

wn25-100rf sch4060/C/���FF6R@F SScFchF.5rf40chl-4

WN80