Post Tension Galvanized Spiral Flat Duct

Post Tension Galvanized Spiral Flat Duct
Spiral corrugated flat duct, size can be customerized, 50mm*20mm,50mm*25mm,70mm*20mm,75mm*20mm; Thickness: 0.3mm,0.35mm, 0.4mm,0.45mm,0.6mm

Post tension Flat duct Forming machine

Post tension Flat duct Forming machine
flat duct former, duct machine, Automatic cutting with specific length, like 5.8m,11.8m etc. Cross shape: Round, Flat, Oval. Galvanized strip: 186mm,216mm.