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Help CenterLow Alloy Steel I Beam Q345B Wide Flange Equivalent to IPE A36 Used in Bridge Fabrication
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Hemaokang Steel (Shandong) Co., Ltd. is proud to offer our premium Low Alloy Steel I Beam Q345B Wide Flange, an engineered solution directly equivalent to IPE A36 and ASTM A36 standards. As a trusted supplier with ISO9001 certification and annual export value exceeding US$50 million, we ensure that every beam meets the rigorous demands of bridge fabrication and heavy structural applications. Our product combines high strength, excellent weldability, and precise dimensional tolerances, making it the ideal choice for engineers and fabricators worldwide.
This I beam features a wide flange design that provides superior load distribution and stability, especially in long-span bridge structures. The Q345B low alloy steel composition offers enhanced yield strength and toughness compared to standard carbon steel, while maintaining good formability. Whether you need custom lengths, specific surface treatments, or just-in-time delivery, our team is ready to support your project from concept to completion.
Key Features & Technical Specifications
- Material Grade: Q345B low alloy steel, with chemical composition optimized for strength and ductility.
- Equivalent Standards: Fully interchangeable with IPE A36, ASTM A36, and EN 10025 S355JR.
- Wide Flange Design: Increased flange width and thickness for higher moment of inertia and bending resistance.
- Bridge Fabrication Ready: Designed to withstand dynamic loads, fatigue, and environmental exposure.
- Customizable Dimensions: Available in a wide range of beam heights, flange widths, web thicknesses, and lengths.
- Surface Options: Painted (standard primer), hot-dip galvanized, or bare per customer requirement.
- Quality Assurance: 100% dimensional inspection and mechanical testing per ISO9001 procedures.
- Traceability: Mill test certificates provided with each shipment for full material traceability.
| Parameter | Value |
|---|---|
| Yield Strength (min) | 345 MPa (50 ksi) |
| Tensile Strength | 470–630 MPa (68–91 ksi) |
| Elongation (min) | 21% |
| Beam Height Range | 100 mm – 1000 mm (customizable) |
| Flange Width Range | 100 mm – 400 mm |
| Web Thickness | 5 mm – 20 mm |
| Length | 6 m, 12 m, or custom (up to 18 m) |
| Surface Treatment | Primer painted, galvanized, or as required |
The combination of Q345B material and wide flange geometry offers distinct advantages in bridge fabrication. The beam’s high strength-to-weight ratio reduces dead load on the structure, allowing for longer spans and lighter foundations. Its excellent weldability ensures reliable connections in complex joints, while the consistent mechanical properties minimize rejection rates during fabrication. Additionally, the dimensional stability of our hot-rolled sections reduces the need for straightening, saving time and cost on site.
Hemaokang Steel sources billets from reputable mills and controls every step of the production process—from rolling to inspection—to ensure compliance with international standards. Each beam is marked with grade, heat number, and dimensions for easy identification. Our inventory covers a wide range of sizes, enabling quick turnaround for both standard and custom orders.
Why Choose Hemaokang Steel for Your Bridge Projects?
- ISO9001 Certified Quality Management: Our production and inspection processes are audited annually to maintain strict quality standards.
- Massive Production Capacity: With 51–100 skilled employees and advanced rolling lines, we can handle large-volume orders efficiently.
- Global Export Experience: We ship to North America, South America, Europe, Africa, Oceania, Asia, and the Middle East, with a deep understanding of international logistics and documentation.
- Custom Fabrication Services: Need cut-to-length, drilling, or beveling? We offer value-added services to reduce your secondary processing.
- Competitive Pricing: Direct mill pricing and optimized supply chain allow us to deliver cost-effective solutions without compromising quality.
- Technical Support: Our engineers can assist with material selection, specification verification, and welding procedure recommendations.
Trust Hemaokang Steel to provide the reliable steel beams your bridge fabrication demands. With annual export value exceeding US$50 million and a commitment to customer satisfaction, we are a preferred partner for infrastructure projects worldwide. Contact us today for a quote, sample, or technical consultation—let’s build the future together.
Frequently Asked Questions (FAQ)
-
Q: What is the difference between Q345B and ASTM A36 steel?
A: Q345B has a minimum yield strength of 345 MPa, which is about 50% higher than A36 (250 MPa). It also offers better low-temperature toughness. However, our Q345B beams are designed to be geometrically and functionally equivalent to A36 sections, making them interchangeable in many applications. -
Q: Can your beams be used for bridge deck support?
A: Yes. The wide flange design provides excellent lateral stability and load distribution, making them suitable for bridge girders, cross beams, and deck supports. Our beams meet the structural requirements of most bridge design codes (AASHTO, EN, etc.). -
Q: What lengths and sizes are available from stock?
A: We commonly stock 6m and 12m lengths in beam heights from 100mm to 400mm. For larger sizes or custom lengths, we offer a fast production lead time of 2–4 weeks. Please contact us with your specific requirements. -
Q: Do you provide mill test certificates (MTC)?
A: Absolutely. Each shipment includes a mill test certificate showing chemical composition, mechanical properties, and heat number traceability. Third-party inspection can also be arranged upon request. -
Q: What surface treatments are available for corrosion protection?
A: We offer standard primer painting (red oxide or zinc-rich), hot-dip galvanizing, and bare surface. For bridge environments, we recommend a zinc-rich primer or galvanizing, but the final choice depends on your corrosion protection specification. -
Q: How do you ensure dimensional accuracy for wide flange beams?
A: Our rolling mill uses automatic gauge control and laser measurement systems. After rolling, every beam is checked for straightness, flange width, web thickness, and length. Our tolerance meets EN 10034 and ASTM A6 standards. -
Q: What is the minimum order quantity (MOQ)?
A: For standard sizes, MOQ is 5 tons. For custom sizes, MOQ is 10 tons. We can also accommodate trial orders for sample testing. Please contact our sales team for details. -
Q: Can you deliver to my project site internationally?
A: Yes. We have extensive experience in export logistics, including FOB, CIF, and door-to-door delivery. We work with reliable shipping lines and freight forwarders to ensure timely and safe delivery to any port worldwide.
Hemaokang Steel (Shandong) Co., Ltd. – Your reliable partner in bridge steel solutions. Contact us now for a prompt quotation!
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