NB/T 47022  法兰 M 800-1.(rf500-sB=98 SCS=

NB/T47023-2012 M 800-1.(rf500-sB=98 SCS=

JSO 20×40-300 FM=100.5

WN200-25 RF0 S5 n=32 l=30/100-0

3 RF 2800-2.520δ0=12

wn 150(b)-25 fm s=4.5

1 RF 450-0.6 δs=6RF2610059/00-600r=

wn50(b)-40 rfя▄Б∙

so50-25rf B=65 b=

PJ/SE400(B)-10 RF S=5

wn 3