法兰 RF 1700-1.0/6RF2=76-16 RF S=8 4

pl200(b)-10 RF

NB/T47021 RF1700-1.06RF2=76-16 RF S=8 4

bl600-600 rf400-1.6.0/6F11H1=6.22

pl25-40 rf/h/h

WN 20(B)-16 RF S=42+0.2 D=92.520615-2

NB=T47021 RF 800-1.0

PL100(B)-10 RF D=213 B1

wn350(b)-40 rf/40/275 c=b)/20-1.0 δ=11

BL50B-100FM)-10rf150