GB/T 29465  法兰 C-M 650-6.4/20δ0=

5 CM 650-6.420δ0=

NB/T47023 C-RF1100-1.

wn15(b)-2500rf¢��ç�

wn40(b)-63rfs=40-1.6SA6 R2ss=9 r=8 S/l100ch40

lwn40-1500 rj b=S=4

BL15-300Rfrf402/RFF3h10SFFS=

47023 fm1200-1.6/80-3.4-20/40-110)-1616 RF b=4

DN300-PN100 WN RF Ⅱ S= S=13

bl40-63fm