Rustproof iron custom doors by Yu Jian (Hangzhou) Trading Co., Ltd. represent the pinnacle of functional design and longevity, engineered to resist corrosion while adapting to individual architectural visions. The rustproofing process is a sophisticated multi layer system: hot dip galvanizing coats the entire iron structure with a zinc layer (90 110μm thick), creating a sacrificial barrier that prevents oxidation at the molecular level. This is followed by a chromate conversion treatment to enhance paint adhesion, and a final application of a UV stable, epoxy polyester powder coating (80 100μm) that resists chipping, fading, and chemical erosion. This combination ensures the doors withstand 8,000+ hours of salt spray testing (per ASTM B117), making them suitable for extreme environments—coastal regions with salt laden air, industrial zones with pollutants, or humid tropical climates. Customization extends beyond aesthetics to structural adaptability: clients can specify dimensions (from standard 2m x 0.9m to oversized 3m x 2.5m), panel configurations (single, double, or with sidelights), and operation styles (swing, sliding, or pivot). Design options span global aesthetics: minimalist geometric cutouts for Scandinavian homes, intricate scrollwork for Mediterranean villas, or lattice patterns inspired by traditional Chinese architecture. Each custom door integrates hidden reinforcements—internal steel channels that preserve design integrity while adding impact resistance. Hardware is selected for both functionality and rust resistance: 316 stainless steel hinges with nylon bushings for silent operation, and multi point locking systems with corrosion resistant cylinders. The finishing touches include customizable colors (200+ RAL options) and textures (matte, gloss, or hammered), with special finishes like antique patina available to mimic aged iron without sacrificing protection. These doors undergo rigorous testing, including thermal cycling to resist warping and impact tests to ensure security, all while maintaining their rustproof properties. Exported to 65+ countries, they comply with regional standards such as EU CE marking and US ANSI/BHMA certification, proving that customization and durability can coexist seamlessly.