GI Corrugated Duct Machine Dies

The GI Corrugated Duct Machine Dies, essential components of an automatic spiral duct former, are precision-engineered tools typically crafted from high-grade materials like CGR15 ball bearing steel to withstand continuous, heavy-duty operation. These dies or rolling mould heads are crucial for shaping galvanized steel strip (0.25-0.5mm thickness, ~ 36mm width) into various diameters, commonly ranging from 35mm to 150mm, with a specific spiral pitch and a double corrugation profile. The dies ensure high-quality, corrosion-resistant ducts used primarily in post-tensioning concrete structures, like bridges and buildings, maintaining dimensional accuracy and structural integrity for the protection of tendons.