
Economizer ND Steel Heat Exchange Spiral Fin Tube High Temperature Piping. Certified Quality Assurance: CE, ISO, ASME, and En certified with 100% NDT and hydraulic testing. Customizable Design: Bespoke fin shapes and materials (Carbon/Alloy/Stainless Steel) available. High Efficiency Structure: H-fin tube design maximizes performance and energy saving for boilers. Wide Application Range: Suitable for power stations, industrial boilers, and high-pressure environments. Comprehensive Warranty: 18 months warranty for spare parts excluding fragile components. Professional Support: Technical training, spare parts supply, and regular customer visits. Flexible Customization: Supports customization from samples, designs, and full customization. Established Manufacturer: Factory founded in 1985 with 23 years of export experience.