GB/T 12459  弯头 DN 50-845EL/0 s=

DN50-8 45EL/0 s=

wn400(b)-25 rf0 RF60100m/

wn32-2500 fm130-=8010/

wn20(b)-300 rfs=4m/

so65(b)-16rf b=3/u00bdamp550e/u00ef/u00bf/u00bdamp/r-10RF/

bl100-16 rf s31603ii 2p2RF/

bl 500(b)-16 m/

WN50(B)-63RFSch40-6 rf10t16/5400(b);amp;amp;amp;am/

WN400-300