
Premium Grade 8.8 Carbon Steel Hex Head Bolts for Construction. Hot-Dip Galvanized Finish: Thick zinc alloy coating provides superior resistance to salt spray, rain, and atmospheric corrosion. Grade 8.8 Carbon Steel: High-strength material ensures durability and reliability for heavy-duty machinery and infrastructure. Strong Metallurgical Bond: Zinc layer forms a permanent bond with steel, preventing peeling or exposure of the base layer. Long Service Life: Outlasts ordinary electro-galvanizing with minimal rust risk even after long-term outdoor exposure. Cost-Effective Solution: Offers excellent anti-corrosion performance at a lower cost compared to stainless steel and duralumin. Versatile Applications: Ideal for outdoor steel structures, power grids, transportation, and building infrastructure. DIN, ANSI, GB Standard: Manufactured to meet multiple international standards for global compatibility and quality assurance. Proven Industry Track Record: Trusted by China Railway for high-speed and ordinary rail infrastructure projects over a decade.