法兰 WN 65(B)-25 RF S=4.5

WN 65(B)-25 RF S=4.5

wn 80-16rf/6/F

WN700-150RFS=12Sh00 rf

LWN50-300 RF Sch40s

WN175-40Mf4+h40S1.0-0sF2.5/wp-logiF.6/-135f4+6 RF S=4RFch80sF2.5/wp-logiF

GB/T9119 PL15(B)-16 RF0-1.0-16RF/S=1-16rf37)-1δ=37)-1 RFb)-116 rfb)-114060sc

LWN150-300RF B=14