Hot Rolled Structural Steel Plate Factory Leading China Suppliers Of Q345Gjb Q390Gjc Q420Gjc
Our hot rolled structural steel plates are designed for the demanding requirements of high-rise buildings and heavy-duty infrastructure. Produced using advanced metallurgical processes, this range includes Q235GJB, Q345GJB, Q390GJC, and Q420GJC grades. These options support a variety of project needs, from general building supports to super-high-rise structures, with a balance of strength, toughness, and weldability suited to structural applications.
As a steel manufacturer and technical exporter, we supply structural steel solutions with CE and ISO9001 certifications. Whether your project calls for a basic grade for general structures or a higher-yield-strength plate for bridge components and skyscrapers, our products are developed for demanding loads and controlled dimensions to support practical fabrication and installation.
Hot Rolled Structural Steel Plate Specifications
| Product Name | Hot Rolled Steel Plate | Available Grades | Q235GJB, Q345GJB, Q390GJC, Q420GJC |
|---|---|---|---|
| Manufacturing Technique | Hot Rolled | Length Range | 4 - 12 Meters |
| Width Range | 1000 - 2200 mm | Thickness Range | 2.5 - 50 mm |
| Certification | CE, ISO9001 | Tolerance | ± 1% |
| Alloy Status | Non-Alloy | Delivery Lead Time | 10 - 20 Days |
Key Benefits of Our Structural Steel Plates
High-Strength Grade Options
Choose from structural grades up to Q420GJC (≥420 MPa) for projects requiring high strength, including super-high-rise structures.
Planned Delivery
Production and logistics are arranged to support a delivery lead time of 10–20 days.
Certified Quality
CE and ISO9001 certifications support quality assurance and acceptance across international markets.
Impact Toughness
Specialized “C” grade plates offer enhanced toughness at 0°C for applications such as bridge and stadium beams.
Controlled Tolerance
A stated ±1% tolerance helps limit material waste and supports efficient on-site assembly.
Export Packing Options
Export-standard packing can be tailored to your requirements to help protect steel plates during overseas transit.
Structural Steel Plate Gallery
Manufacturing and Export Services
Direct Manufacturing
Production-line oversight supports consistent metallurgical properties throughout manufacturing.
Technical Export Support
Our foreign trade team assists with export logistics and compliance requirements.
24-Hour Response
Global clients can reach our team around the clock through WhatsApp, Skype, and WeChat.
Quality Assurance
Internal testing is conducted, and third-party inspections are supported.
Sample Program
Samples are available to help you assess the material before placing a bulk order.
Delivery Commitment
We are committed to on-time delivery, including when market prices fluctuate.
Structural Steel Grade Comparison
| Steel Grade | Strength Level | Typical Application |
|---|---|---|
| Q235GJB | Basic (235 MPa) | General Supports / Secondary Parts |
| Q345GJB | Moderate (345 MPa) | Mid-demand Building Components |
| Q390GJC | High (390 MPa) | Stadium Beams / Bridge Structures |
| Q420GJC | Ultra-High (420 MPa) | Super-High-Rise Key Structures |
| Specialized | Customized | Project-specific extreme-load-bearing applications |
Frequently Asked Questions About Structural Steel Plates
We are a professional steel products manufacturer with a technical foreign trade division. This enables us to offer factory-direct pricing alongside specialized export services.
Yes. We are committed to supplying quality products and meeting delivery schedules regardless of market price changes.
For a prompt quotation, please share the steel grade, required size, order quantity, and destination port.
Yes. We welcome third-party inspections to verify the steel plates’ quality and specifications before shipment.
Yes, samples are provided free of charge. The customer pays the initial freight, which we will refund to your account after official cooperation begins.
The “B” and “C” suffixes indicate quality and toughness grades. GJC plates generally provide better impact toughness, often tested at 0°C, and may be suitable for critical load-bearing elements and colder environments.