GB Q235B Steel Plate
GB Q235B is a high-versatility carbon structural steel plate offering excellent weldability and ductility, making it a cornerstone material in global construction and industrial manufacturing.
| Material | Carbon Steel |
|---|---|
| Grade / Standard | GB Q235B |
| Thickness | 6mm-300mm |
| Width | 1000mm-4020mm |
| Length | 3000mm-18000mm |
| Delivery Condition | hot_rolled / normalized / as_rolled |
| Surface Treatment | bare / shot_blasting / painting / coated |
| MOQ | 1 Piece |
| Delivery Time | 15-30 Days / In Stock |
| Loading Port | Tianjin / Shanghai / Qingdao |
Overview of GB Q235B Steel Plate
GB Q235B is one of the most widely used carbon structural steels in China, complying with the GB/T 700-2006 standard. The “Q” represents the yield strength (Qu Fu), and “235” indicates its minimum yield strength of 235 MPa. Grade B specifies that it has undergone impact testing at 20°C. Known for its moderate carbon content, Q235B offers an excellent balance of strength, plasticity, and welding properties, making it a cornerstone material in global construction and industrial manufacturing.
Key Features and Advantages
- Superior Weldability: Due to its low carbon content, Q235B is exceptionally easy to weld using standard methods without the risk of brittle fracture or excessive hardening.
- Excellent Formability: It can be easily cold-formed, bent, and machined, allowing for versatile fabrication into various shapes and components.
- Reliable Mechanical Strength: With a tensile strength ranging from 370 to 500 MPa, it provides sufficient structural integrity for a wide range of load-bearing applications.
- Cost-Effectiveness: As a standard carbon steel, it is highly affordable compared to high-alloy or specialized steels, offering a high performance-to-cost ratio for large-scale projects.
- Broad Availability: Being a universal grade, it is consistently in stock in various thicknesses and dimensions, ensuring short lead times for urgent project requirements.
Versatile Applications
The versatility of GB Q235B steel plate makes it suitable for numerous industries:
- Civil Construction: Used in the fabrication of steel buildings, bridges, and housing structures.
- Industrial Machinery: Essential for manufacturing machinery bases, frames, and heavy equipment components.
- Infrastructure Projects: Widely utilized in the construction of towers, derricks, and support structures.
- Transportation: Applied in the manufacturing of vehicle frames, railway components, and shipping containers.
- Energy Sector: Used for oil and gas storage tanks, power plant structures, and pipeline supports.
Why Choose Shandong Tanglu Metal Material Co., Ltd.?
As a leading supplier of steel materials in China, Shandong Tanglu Metal Material Co., Ltd. ensures that every GB Q235B steel plate meets stringent quality standards.
- Certified Quality: All our products come with a Mill Test Certificate (MTC) according to EN 10204 3.1, guaranteeing chemical and mechanical compliance.
- Massive Stock & Fast Delivery: We maintain a substantial inventory at major ports like Tianjin and Qingdao, enabling us to fulfill orders of up to 10,000 tons per month with rapid dispatch.
- Custom Processing: We offer precision cutting (plasma/laser/flame), surface treatments (galvanizing/priming), and fabrication services to meet your specific project blueprints.
- Global Logistics Expertise: With years of experience in international trade, we handle complex shipping and documentation, ensuring your materials arrive safely and on time.
📐 Dimension & Size Table
| Thickness (mm) | Width (mm) | Length (mm) | Weight (kg/m²) |
|---|---|---|---|
| 6 | 1000-4020 | 3000-18000 | 47.10 |
| 8 | 1000-4020 | 3000-18000 | 62.80 |
| 10 | 1000-4020 | 3000-18000 | 78.50 |
| 12 | 1000-4020 | 3000-18000 | 94.20 |
| 14 | 1000-4020 | 3000-18000 | 109.90 |
| 16 | 1000-4020 | 3000-18000 | 125.60 |
| 20 | 1000-4020 | 3000-18000 | 157.00 |
| 40 | 1000-4020 | 3000-18000 | 314.00 |
| 60 | 1000-4020 | 3000-18000 | 471.00 |
| 100 | 1000-4020 | 3000-18000 | 785.00 |
* Custom sizes available upon request. Tolerances per relevant international standards.
🔬 Chemical Composition
| Element | Min | Max | Display Value | Note |
|---|---|---|---|---|
| C | 0.20 | ≤ 0.20 | For t≤16mm | |
| Mn | 0.30 | 0.70 | 0.30-0.70 | |
| Si | 0.35 | ≤ 0.35 | ||
| P | 0.045 | ≤ 0.045 |
* Chemical composition may vary by heat, thickness and specification. Please refer to the actual mill test certificate.
⚙️ Mechanical Properties
| Property | Value | Unit | Test Condition |
|---|---|---|---|
| Yield Strength (ReH) | ≥ 235 | MPa | t ≤ 16mm |
| Tensile Strength (Rm) | 370 - 500 | MPa | - |
| Elongation (A) | ≥ 26 | % | t ≤ 40mm |
* Values shown are minimum requirements unless otherwise stated.
📦 Commercial Information
| Packaging | Standard seaworthy export packing, bundled with steel strips and angle iron protection, with desiccant inside to prevent moisture. |
|---|---|
| Payment Terms | tt : T/T (Telegraphic Transfer) lc : L/C (Letter of Credit) dp : D/P (Documents against Payment) western_union : Western Union paypal : PayPal |
| Price Term | FOB CFR CIF EXW |
| Supply Capacity | 10,000 Tons/Month |
| Loading Port | Tianjin / Shanghai / Qingdao |
Why Choose Our GB Q235B Steel Plate?
Certified GB Standards
Strictly manufactured according to GB/T 700-2006, ensuring high reliability.
20+ Years Experience
Decades of experience in supplying carbon structural steel to global markets.
Competitive Factory Price
Direct supply from manufacturer ensures the best cost-performance ratio for your project.
Massive Inventory
Over 50,000 tons of stock maintained at major ports for immediate shipment.
Mill Test Certificates
Original 3.1 MTC provided with every shipment for full quality traceability.
🏭 Applications of GB Q235B Steel Plate
GB Q235B steel plate is the backbone of general infrastructure. It is widely used in building frameworks, bridge engineering, industrial equipment frames, and non-pressure storage tanks where reliable strength and excellent weldability are the primary requirements.
📋 Quality & Certification
Our Certifications
- ✅ ISO 9001:2015
- ✅ CE Marking
- ✅ ABS
- ✅ DNV GL
- ✅ Lloyd's Register (LR)
- ✅ Bureau Veritas (BV)
- ✅ SGS Certified
Mill Certificate Type
- 📋 EN 10204 3.1
- 📋 EN 10204 3.2
- 📋 Original Mill Certificate
- 📋 Third Party Inspection Available
- 📋 Certificate of Origin
❓ Frequently Asked Questions
What is GB Q235B Steel Plate?
GB Q235B is a high-versatility carbon structural steel plate conforming to GB/T 700-2006. It features excellent weldability and ductility, making it ideal for general construction and industrial manufacturing.
What sizes are available for GB Q235B Steel Plate?
Available in thickness 6mm to 300mm, width up to 4020mm, length up to 18000mm. Custom sizes available upon request.
What is the chemical composition of GB Q235B?
Key elements include C≤0.20%, Mn:0.30-0.70%, Si≤0.35%, P≤0.045%, S≤0.045%. Full composition is provided in the Mill Test Certificate (MTC).
Can you provide mill test certificate for Q235B steel?
Yes. Original MTC conforming to EN 10204 3.1 is provided with every order for full traceability and quality assurance.
Do you offer large thickness Q235B plates?
Yes, we can supply Q235B plates with thicknesses up to 300mm for heavy structural foundations and machinery bases.
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GB Q235B Steel Plate
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