100 to 1250mm Round Ventilation Duct Galvanized Steel Spiral Pipe and Fittings

100 to 1250mm Round Ventilation Duct Galvanized Steel Spiral Pipe and Fittings. Superior Structural Strength: Spiral design offers higher rigidity and reduced air leakage compared to rectangular ducts. Wide Size Range: Available in diameters from 100mm to 1250mm with thickness options from 0.5mm to 1.2mm. Dual Material Options: Manufactured from Galvanized Steel or 201/304 Stainless Steel for enhanced corrosion resistance. Smooth Interior Surface: SR style features minimal friction loss for optimal airflow efficiency. Comprehensive Fittings: Includes End Caps, Elbows, Reducers, 3-Way, 4-Way connectors, and Clamps. ISO and CE Certified: Products meet international quality and safety standards for global markets. Customized Cutting: Flexible manufacturing supports tailored configurations for specific project needs. Fast Delivery: Off-peak lead time within 15 workdays; peak season one month.