Guardrail screws
Custom Guardrail Bolts with Long-Life Corrosion Protection
(Body Content)
Engineered specifically for outdoor structural applications, our custom guardrail bolts feature a high-performance Dacromet® coating, providing over 1500 hours of salt spray resistance. We deliver a fastening solution that permanently solves the problem of rust and structural degradation for highway barriers, municipal fencing, and architectural railings.
Common Problems in Railing & Fencing Projects
Is your project’s quality being compromised by inferior bolts?
Problem 1: Rust Stains Ruin the Appearance?
Ordinary galvanized bolts often show rust stains within 1-2 years, degrading the overall look of your project. Our Dacromet® coated bolts maintain a clean, uniform finish for years, preserving your project’s aesthetic value.Problem 2: Corrosion Reduces Structural Safety?
Rust is not just ugly; it weakens the bolt, compromising the structural integrity of the entire barrier. For guardrails, safety is the number one priority.Problem 3: Slow & Difficult On-site Installation?
Poorly made bolts with rough surfaces and inconsistent tolerances are difficult to install, slowing down your construction crew and increasing labor costs.Problem 4: Loosening Caused by Vibration or Temperature Changes?
Guardrails on highways and bridges are subject to constant vibration from traffic. Standard bolts can loosen over time, creating safety hazards and requiring costly maintenance.
Our Solution: A Professional Bolt to Safeguard Your Project
1. Core Technology: Dacromet® Coating for Long-Term Protection
We use industry-proven Dacromet® coating, whose multi-layered zinc-aluminum flake structure provides superior barrier and cathodic protection against rain, de-icing salts, and acid rain.
2. Optimized Design: Easy Installation, Secure Fastening
Our optimized thread design ensures smooth, low-effort installation, speeding up on-site work. Once tightened, it provides a strong, reliable clamp force that resists loosening from vibration, ensuring the long-term stability of the railing connection.
3. Material Strength: Class 10.9/12.9 High-Tensile Steel
We use high-tensile steel and a controlled heat treatment process to ensure every bolt has the mechanical strength to handle expected loads and impacts.
Guardrail Bolt Technical Specifications：
| Parameter | Specification & Options | Notes & Benefits |
|---|---|---|
| Product Name | High-Performance Anti-Corrosion Guardrail Bolt | Specifically engineered for outdoor railing and fencing projects. |
| Core Technology | Genuine Dacromet® Coating | Industry-proven zinc-aluminum flake coating with no hydrogen embrittlement risk. |
| Salt Spray Resistance | Grade A: ≥ 1500 Hours Grade B: ≥ 2000 Hours (Selectable based on project requirements) | Tested per ASTM B117 / ISO 9227 (NSS) for exceptional long-term outdoor corrosion protection. |
| Substrate Material | Class 10.9 / Class 12.9 High-Tensile Alloy Steel | Provides superior mechanical strength and impact resistance to ensure guardrail safety. |
| Head Types | Round Head w/ Square Neck (Carriage Bolt Style), Hex Head | Customized to fit your railing system design for easy on-site installation. |
| Thread Technology | Optimized Thread Profile | Ensures low-effort installation while providing excellent anti-vibration and anti-loosening performance. |
| Applicable Standards | Can be manufactured to meet regional standards (e.g., AASHTO, EN 1317, JT/T). | Guarantees compliance with relevant engineering codes. |
| Environmental Compliance | Compliant with EU RoHS and REACH directives | Environmentally friendly and safe for public use. |
| Available Reports | Material Certificate / Heat Treatment Report / Salt Spray Test Report / Full Dimensional Report | Full quality documentation provided for traceability and peace of mind. |
Application Fields:
Highway & Roadside Guardrails (W-Beam Barriers)
Bridge & Overpass Railings
Municipal & Public Works Fencing
Architectural Railings for Balconies & Stairs
Industrial Safety Barriers
