NB/T 47023  法兰 RF 600-0.6/20δ0=1

3 RF 600-0.620δ0=1

lwn65-300rf/i-16FF16T40j6

wn350(b)-25 m ,1.6/45-

WN50-25 RFm0-1.0ch80 h=100

wn150-300g s=5.5-230f20rf08-12=85/6

WN32-16M2009m rfFRF=435RF50

BL 2"-300 ST7

WN150-300 RF SchFb=1FF0 RF S=6/4&amp

SO 25-150 RFF �

WN80-150 RF S