GB/T 29465  法兰 C-RF 550-6.4/20δ0=

5 CRF 550-6.420δ0=

bl250-16rf CР621ampamp4s/1rfFRF445/5¦60.3

WN300(B)-300 RFF10RFFRdh0S=65T-/f1=3B

3 M 1900-6.420δ0=16

WN250-300RJ

so25-300 t0=4.8 B=Fx/F S=s=76-f

WN50(B)-100RJ Sch40S0Sch40 S=8.1 M f2=4 C=380-RFFM S＝8.840

PL150-10FF(100-0F-/

W