
Brushed Custom Aluminum Spline Round Tube for Heat Exchanger Tubes. Integrated Extrusion Molding: Uniform wall thickness with high dimensional tolerance and no secondary welding. High Torsion Resistance: External gear spline design ensures strong anti-slip torque transmission. Lightweight Aluminum Material: 6063 alloy offers 1/3 weight of steel to effectively reduce equipment load. Anti-Corrosion Surface: Natural anodized finish provides wear resistance for indoor and outdoor use. Comprehensive Customization: Supports CNC machining, cutting, drilling, and custom mold opening services. High Production Capacity: Annual output of 50,000 tons ensures stable delivery for large orders. International Certifications: Products certified with ISO9001, CE, and RoHS for global market access. Versatile Applications: Ideal for automation, new energy, medical machinery, and heat dissipation.