GB/T 12459  同心异径管 DN 65×50-Ⅱ-3RC1rfFs RF00-16FF Sc

WN500-150RF SF S=14.00 RF S80

DN 65×50-Ⅱ-3 RC1rfFs RF00-16FF Sc

sw15-2500rj2R/S0-150 RF4.5CH

bâ… 800-s/@WN100(B)-16 RF

wn400-150 rf s=14.27 hf/fS/h400f/f b=492f/@47023

bâ… 850-f/@47023 RF1000-1.0/70-165

wn15(B)-300 RF sch40s

WN15(B)-300T