
High Quality Energy Saving Spiral Double Fin Tube for Boiler. High Heat Transfer Efficiency: Maintains high capacity for heat transfer with superior self-cleaning properties. Anti-Wear and Anti-Fouling: Unique groove structure provides excellent resistance to wear and fouling. Customized Material Options: Available in Carbon steel, Alloy steel, SUS, and other materials. Full Customization Service: Supports customization from samples, designs, and flexible minor adjustments. ISO and CE Certified: Manufactured in strict accordance with ISO9001 and CE system requirements. Waste Heat Recovery: Retains ability to effect flue gas waste heat recovery in boiler renovations. Factory Direct Supply: Direct from manufacturer located 2 hours from Shanghai Airport with pickup service. Comprehensive QC Process: Includes RT, PT, hydraulic pressure test, and 100% finished product inspection.