Hat Section Steel Purlin
Hat section steel, characterized by its distinctive cross-sectional shape resembling a hat, is primarily manufactured from 09CuPRE low-alloy high-strength weathering steel through hot-rolling processes. This specialized profile steel exhibits exceptional atmospheric corrosion resistance, high tensile strength, and superior weldability, making it indispensable in rail transport and structural engineering applications.
Key Applications
Railway Freight Cars
Used as side pillars in coal gondola cars due to its optimized load-bearing capacity and vibration resistance.
The 22-gauge model (with bottom width in centimeters) is standardized for Chinese rail vehicles.
Foundation Engineering
Combined with H-beams (e.g., 700×300×13×24) to form composite piles for soft-soil, enhancing lateral stiffness while reducing material usage.
Waterfront Structures
Serves as water-stop barriers insystems, demonstrating excellent sealing performance in hydraulic projects.
Technical Advantages
FeatureBenefitMaterial Properties≤0.12% carbon content ensures ductility and low-temperature impact toughness (-40°C)Structural Efficiency30-40% weight reduction compared to conventional I-beams, lowering transport/installation costsCorrosion Resistance09CuPRE alloy forms protective oxide layers, extending service life in humid environmentsModular DesignPre-fabricated welding joints enable rapid on-site assembly (45m/day progress achievable)
Comparative Analysis
vs. C-section Steel: Higher torsional rigidity due to closed-top geometry
vs. H-beams: Better localized stress distribution at connection points
Future Trends
Lightweight development (thinner webs/flanges) is prioritized to further reduce vehicle deadweight while maintaining structural integrity.
