Highway bridge guardrail mesh, also known as hook mesh, is a specialized facility used for the protection of highway bridges. The following are its detailed specifications:
? Material: Typically made from high-quality low-carbon steel wire, galvanized wire, stainless steel wire, etc. Low-carbon steel wire is cost-effective and can be treated with galvanization to enhance corrosion resistance; galvanized wire offers better anti-corrosion performance, making it suitable for outdoor bridge environments; stainless steel wire provides superior corrosion and oxidation resistance but comes at a relatively higher cost.
? Specifications: Wire diameter generally ranges from 2.0mm to 5.0mm, with common sizes being 3.6mm, 4mm, and 5mm; mesh aperture sizes are mostly between 30mm×30mm and 80mm×80mm, such as 50mm×50mm and 60mm×60mm; the height of the guardrail mesh is typically 1.5 meters, 1.8 meters, or 2 meters; post diameters commonly used are 48mm, 58mm, and 76mm, with post spacing generally at 3 meters.
? Weaving Process: The metal wires are woven using a hook mesh machine, which can be categorized into folded-edge shrunken handle and twisted-edge locked handle. This weaving method ensures uniform mesh openings and a flat surface, providing excellent elasticity and the ability to buffer external impacts.
? Surface Treatment: Mainly includes galvanization (electro-galvanization, hot-dip galvanization), plastic dipping, and plastic coating (PVC, PE plastic coating). Hot-dip galvanized hook mesh offers outstanding corrosion resistance, making it suitable for long-term outdoor use without rusting or corroding easily; plastic dipping and coating treatments enhance the mesh's weather resistance and aesthetics while further improving its anti-corrosion performance.
? Features
? Excellent Protective Performance: The high strength of the hook mesh enables it to effectively withstand impact forces from vehicles, reducing traffic accidents and ensuring the safety of pedestrians and vehicles.
? Strong Corrosion Resistance: Through surface treatments such as galvanization and plastic dipping, it effectively resists erosion from acidic and alkaline substances, as well as corrosion from rain and moisture, making it durable even in natural environments like bridges.
? Aesthetic and Elegant: The diamond-shaped mesh openings and simple structure, combined with a variety of colors after plastic coating (such as common dark green and grass green), allow it to blend harmoniously with the surrounding environment, enhancing the overall aesthetics of the bridge.
? Easy Installation: No complex tools or techniques are required, making the installation process straightforward. It can also be flexibly adjusted according to the bridge's terrain and environment, saving installation time and costs.
? Applications: Primarily used for protection on both sides of highway bridges to prevent vehicles or pedestrians from falling off, serving as isolation and protection to ensure traffic safety. It can also be used for central dividers on bridges to separate opposing lanes and prevent vehicles from crossing into oncoming traffic.