Composite Screws Bimetal design, High-strength, Anti-corrosion, Self-drilling

316L stainless steel heads provide ultimate corrosion resistance, passing 1000+ hours salt spray tests (ASTM B117). Our patented surface treatment enhances corrosion resistance by 40% compared to industry standards.

The alloy tips (Rockwell C58) deliver unmatched penetration, eliminating the need for pre-drilling and saving up to 70% of installation time. With 30% higher shear strength than carbon steel screws in concrete/metal substrates.

Our proprietary nano-ceramic/zinc-aluminium coating achieves 5-year zero-rust outdoor protection (ISO 12944 C5-M certified). It features self-healing for micro-scratches and galvanic isolation to prevent bimetallic corrosion.

High-frequency precision welding with weld-point tensile strength exceeding 1200MPa. Passing 100,000-cycle vibration tests with zero cracking, the seamless fusion maintains structural integrity even under extreme conditions.