T5 Temper Acid Resistant Custom Aluminum Spline Round Tube for Greenhouse Frame Construction

T5 Temper Acid Resistant Custom Aluminum Spline Round Tube for Greenhouse Frame Construction. Integrated Extrusion Molding: Uniform wall thickness with high dimensional tolerance and no secondary welding. External Gear Spline Design: Large contact area providing strong torsion resistance and anti-slip torque transmission. Lightweight Aluminum Material: 6063-T5 alloy is 1/3 the weight of steel, effectively reducing equipment load. Natural Anodized Surface: Anti-corrosion, anti-oxidation, and wear-resistant for long indoor and outdoor service life. Smooth Hollow Cavity: Convenient for shaft penetration, wiring, and liquid circulation applications. Deep Processing Support: Available for cutting, drilling, tapping, CNC turning, and threading per customer drawings. High Annual Output Capacity: 50,000 tons annual output ensures stable delivery for standard and big orders. Comprehensive Certifications: ISO9001, CE, and RoHS compliant for hassle-free international customs clearance.