
Round Ductwork Fittings 3 Way Y Shape Galvanized Spiral Duct Pipe Branch. Corrosion Resistance: Made from galvanized or stainless steel for excellent durability and corrosion resistance. Smooth Airflow Design: Spiral structure with smooth interior surface minimizes friction loss and pressure drop. High Structural Strength: Rigid spiral design offers superior strength and reduced air leakage compared to rectangular ducts. Customizable Materials: Available in 201/304 Stainless Steel or Galvanized Iron with thickness options from 0.5-1.2mm. Wide Size Range: D1 diameters from 100mm to 1250mm and D3 from 100mm to 1250mm available. Certified Quality: Products are ISO and CE certified, ensuring compliance with international standards. Integrated Manufacturing: Full integration from trading to manufacturing with advanced automated welding and forming. Global Service Network: Serving over 50 countries with dedicated logistics and trade departments for fast delivery.