NB/T 47021  法兰 C-RF 900-1.0 خ´s=10

1 CRF 900-1.0 خ´s=10

PL50(B)-10RF7Sch4F2m1Ff

PL10(B)-6 RF/

1 M 800-1.0 δs=10

wn20-40rfF0/

WN 65-25 RF/B)-10 FF00c2/-1

2 rf 800-1.6 δs=10RK 25/pampa102/lp1/1-1-1.-f0s1200160600r

WN100-150RF-Sch120sc/=2.900b7/u009e304

WN100-150 RF-40RFs62

1 FM450-1