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OEM customized, Cut by drawings
EMERSONMETAL
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ASTM Compliance for Structural Reliability: Manufactured to ASTM standards (A36, A572 Gr.50, A709 Gr.50W, etc.), our carbon steel plates offer consistent mechanical properties, including high tensile strength (370-500 MPa) and yield strength (≥250 MPa), critical for withstanding dynamic loads, seismic activity, and environmental stress.
Precision CNC Laser Cutting: Equipped with state-of-the-art laser cutting systems, we achieve tolerances as tight as ±0.05mm, ensuring complex shapes (gussets, flanges, connection plates) fit perfectly during assembly. This eliminates on-site rework and reduces project timelines.
Weather and Corrosion Resistance: Special grades like ASTM A709 Gr.50W feature weathering steel properties, forming a protective oxide layer ("patina") that resists corrosion, ideal for bridges in coastal, industrial, or high-humidity regions.
Customization Flexibility: From standard plate sizes to tailor-made structural components, we accommodate diverse project requirements, including thicknesses up to 150mm and dimensions up to 12m in length.
Cost-Efficiency: High-strength ASTM grades (e.g., A572 Gr.50) allow for thinner plate designs without compromising performance, reducing material usage and transportation costs.
| Parameter | ASTM A36 | ASTM A572 Gr.50 | ASTM A709 Gr.50W |
|---|---|---|---|
| Tensile Strength | 400-550 MPa | 450-620 MPa | 485-655 MPa |
| Yield Strength | ≥250 MPa | ≥345 MPa | ≥345 MPa |
| Elongation | ≥20% | ≥18% | ≥18% |
| Thickness Range | 3mm-150mm | 5mm-120mm | 6mm-100mm |
| Width | 1000mm-3000mm | 1000mm-3000mm | 1000mm-3000mm |
| Length | 2000mm-12000mm | 2000mm-12000mm | 2000mm-12000mm |
| Surface Treatment | Mill finish, anti-rust paint | Mill finish, weathering patina | Weathering patina, epoxy coating |
| Laser Cutting Tolerance | ±0.05mm | ±0.05mm | ±0.05mm |
| Max Cutting Size | 3000mm×12000mm | 3000mm×12000mm | 3000mm×12000mm |
Girder Bridges: A572 Gr.50 plates form main girders and crossbeams, supporting heavy vehicular loads with minimal deflection.
Truss Bridges: Laser-cut A36 connection plates and brackets ensure precise alignment of truss members, enhancing structural stability.
Cable-Stayed Bridges: A709 Gr.50W weathering steel plates resist corrosion in exposed cable anchorages and deck structures.
Pedestrian Bridges: Custom-cut lightweight components reduce overall weight while maintaining safety, ideal for urban and scenic crossings.
Railway Bridges: High-strength plates withstand repeated dynamic loads from trains, ensuring long-term structural integrity.
Complex Shapes: Cut intricate geometries (slots, holes, curves) for connection fittings, reducing the need for secondary machining.
High-Speed Processing: Advanced fiber laser systems handle thick plates (up to 50mm) efficiently, with cutting speeds up to 10m/min for thin sheets.
No Thermal Distortion: Low-heat laser cutting minimizes material warping, preserving the mechanical properties of the steel.
Material Versatility: Compatible with all ASTM carbon steel grades, as well as alloy steels for specialized bridge components.
Quality Inspection: Post-cutting dimensional checks using 3D scanning ensure compliance with design specifications.
Material Certification: Each plate comes with a mill test report (MTR) verifying chemical composition (C: 0.25-0.29%, Mn: 0.80-1.35% for A36) and mechanical properties.
Non-Destructive Testing (NDT): Ultrasonic testing (UT) detects internal defects; magnetic particle inspection (MPI) checks for surface cracks in critical components.
Compliance Documentation: Conforms to ASTM A6/A6M (structural steel specifications) and AASHTO (American Association of State Highway and Transportation Officials) standards for bridge materials.
Traceability: Full batch tracking from raw material to finished product ensures accountability throughout the supply chain.
Plate Processing: Cutting-to-length, beveling, and drilling for direct integration into bridge assemblies.
Surface Treatments: Weather-resistant coatings, galvanizing, or painting to extend service life in aggressive environments.
Structural Fabrication: Welding and assembling pre-cut components into subassemblies (e.g., bridge joints, support brackets) to simplify on-site installation.
Engineering Support: Collaboration with design teams to optimize plate thickness, cut patterns, and material selection for cost and performance.
Proven Track Record: Supplied steel plates and components for over 50 major bridge projects globally, including highway and railway crossings.
Technical Expertise: In-house engineers with deep knowledge of ASTM standards and bridge design codes (AASHTO, Eurocode 3).
Efficiency: Fast turnaround on custom cuts (7-10 business days) and bulk orders, supporting tight construction schedules.
Sustainability: Weathering steel grades reduce maintenance needs and extend bridge lifespan, lowering long-term environmental impact.
