Overview

A Grade 6.8 Carbon Steel Hot Dip Galvanized Square U-Shape Bolt is a robust fastener designed for demanding applications where high strength, durability, and superior corrosion protection are essential. It’s characterized by its “U” shape with a square bend, specifically engineered to secure square or rectangular components. The use of Grade 6.8 carbon steel denotes a specific strength class, while the hot-dip galvanization process provides a thick, sacrificial zinc coating for exceptional resistance against environmental degradation.

Application

• Heavy Construction and Infrastructure: Ideal for attaching square or rectangular structural steel members, supporting heavy pipelines, securing bridge components, and fastening signposts and overhead structures where high strength and long-term outdoor exposure are factors.
• Utility and Telecommunications: Used to mount electrical boxes, conduits, cable trays, and antenna masts to steel framework, especially in outdoor environments where weather resistance is critical.
• Marine and Port Facilities (Non-Submerged): Suitable for securing square components on docks, marine platforms, and harbor equipment, offering good resistance to atmospheric corrosion near saltwater, though not typically recommended for direct immersion.
• Industrial and Agricultural Equipment: Employed in outdoor machinery, agricultural implements, and industrial structures exposed to harsh weather, dust, and general corrosive environments, for securing square axles, frames, and mounting brackets.
• Road and Railway Applications: Used in securing traffic barriers, railway track components, and various signals and overhead structures requiring significant strength and resistance to weathering.

Feature

• Grade 6.8 Carbon Steel Strength: This classification indicates a minimum tensile strength of 600 MPa (approx. 87,000 psi) and a minimum yield strength of 480 MPa (approx. 70,000 psi). This medium-strength carbon steel provides good mechanical properties and load-bearing capacity for general structural fastening.
• Hot-Dip Galvanization (HDG): This process applies a thick, durable coating of zinc through immersion in molten zinc. The zinc forms a metallurgical bond with the steel, creating a barrier that is highly resistant to impact and abrasion. More importantly, it provides cathodic protection, meaning the zinc corrodes preferentially to the steel, even if the coating is scratched, significantly extending the life of the bolt in corrosive environments.
• Square Bend Design: Specifically engineered to perfectly fit and tightly secure square or rectangular beams, pipes, channels, or frames. This ensures a stable, non-rotational hold that is more effective than round U-bolts for square components.
• Excellent Weather and Corrosion Resistance: The combination of carbon steel and HDG provides superior protection against rust, oxidation, and environmental degradation from rain, snow, humidity, and industrial pollutants, making it ideal for outdoor and exposed applications.
• Cost-Effective Strength and Protection: Offers a balance of good mechanical strength and excellent long-term corrosion resistance at a more cost-effective price point compared to high-grade stainless steels, especially for large-scale outdoor projects.