NB/T 47023  法兰 C-G 800-0.6/20δ0=16

3 CG 800-0.620δ0=16

BL50-900RJM

wn400-600rfF105 RF3-4s1201400FFF0RF

WN 50(B)-16 RF S=3 RF S=3=-1.05Sch140040200-000 R06 R

SO250(B)-16GS=5/159*950rf12/

WN 65(B)-40 M S/0-0р�RF-

WN100-300 RF Sch40šÃ‚Â

WN200-600RFSCH805rf1/71F=

WN 4"-300 R