GB/T 12459  弯头 DN 32-690EL/ S=10860.3 SC6sFFN5

DN 32-6 90EL/ S=10860.3 SC6sFFN5

WN100-300RF SCH10SCH10Sc

WN 50-40RFcs

pl450(a)-6ff0RF7FR6.640614 Fm0-=12п©б╘п╠Б∙≤п©Б√�

WN40(B)-100FMS=6f)-1565-

WN150(a)-10 RF f1=3/d=79rf s RF/1.RF6f H40

WN 50(B)-16 RF S=5.5

WN450-300 RF A=457