GB/T700 Q235B Hot Rolled Steel Plate – Reliable Carbon Steel Material for Infrastructure and Fabrication
| Basic Information | |
| Attribute | Value/Details |
| Product Name | Hot Rolled Steel Plate |
| Steel Grade | Q235B |
| Standard | GB/T 700 steel plate |
| Type | Carbon Structural Steel Plate |
| Technology | Hot Rolled |
| Chemical Composition (Typical) | |
| Attribute | Value/Details |
| C (Carbon) | ≤ 0.20% |
| Si (Silicon) | ≤ 0.35% |
| Mn (Manganese) | 0.30% – 0.70% |
| P (Phosphorus) | ≤ 0.045% |
| S (Sulfur) | ≤ 0.045% |
Chemical Composition (Typical for Q235B)
Mechanical Properties (Typical for Q235B)
| Mechanical Properties | |
| Attribute | Value/Details |
| Tensile Strength | 370 – 500 MPa |
| Yield Strength | ≥ 235 MPa |
| Elongation | ≥ 26% (for thickness ≤ 16mm) |
| Hardness | Standard carbon steel hardness range |
| Available Sizes | |
| Attribute | Value/Details |
| Thickness | 2mm – 200mm |
| Width | 1000mm – 2500mm |
| Length | 2000mm – 12000mm or customized |
| Surface | Black / oiled / shot blasted / painted (optional) |
| Thickness (mm) | Width (mm) | Length (mm) | Weight (kg/m²) | Application Notes |
| 2 – 4 | 1000 – 1500 | 2000 – 6000 | 15.7 – 31.4 | Light fabrication, panels, small structures |
| 5 – 8 | 1000 – 2000 | 2000 – 8000 | 39.3 – 62.8 | Machinery parts, general engineering |
| 9 – 12 | 1200 – 2200 | 3000 – 10000 | 70.7 – 94.2 | Structural components, beams, supports |
| 14 – 20 | 1500 – 2400 | 4000 – 12000 | 109.9 – 157.0 | Bridges, heavy structures, construction |
| 22 – 40 | 1500 – 2500 | 6000 – 12000 | 172.6 – 314.0 | Heavy engineering, industrial structures |
| 45 – 80 | 1800 – 2500 | 6000 – 12000 | 353.2 – 628.0 | High-load structures, shipbuilding, infrastructure |
| 90 – 200 | 2000 – 2500 | Custom length | 706.5 – 1570.0 | Heavy-duty fabrication, large engineering projects |
1. Stable Structural Performance
Complying with GB/T 700 standard, mild steel plate Q235B features steady mechanical properties with a yield strength of no less than 235 MPa. It delivers reliable load-bearing capacity, perfectly suited for structural engineering scenarios including building construction, bridge projects and industrial support frames.
2. Superior Welding and Forming Performance
Thanks to its low carbon content and well-balanced chemical composition, the steel plate boasts great ductility and outstanding weldability. It can undergo conventional processing such as cutting, bending and drilling smoothly without cracking or deformation, adapting to various hot and cold forming operations.
3. High Cost Performance
Different from high-grade structural steel with premium pricing, Q235B carbon steel fully meets the conventional strength and construction requirements of most engineering projects. It effectively cuts down overall project investment while maintaining stable service performance, serving as a cost-efficient structural material.
4. Versatile Application Scenarios
As a mainstream carbon structural steel, Q235B enjoys extensive applicability. It is widely adopted in infrastructure construction, steel structure fabrication, mechanical manufacturing, highway bridges, warehouse engineering and general civil construction, occupying a core position in domestic and overseas steel markets.
5. Consistent Chemical & Quality Stability
Manufactured in strict accordance with GB/T 700 specifications, the product features precisely controlled contents of carbon, manganese, sulfur and phosphorus. Such standardized component control ensures uniform batch quality and long-term stable operational performance in engineering use.
6. Easy Secondary Processing
The material has excellent processability, supporting flexible cutting, welding, drilling and shaping. It can well adapt to customized production and complex structural fabrication demands, greatly improving the processing efficiency of steel manufacturing projects.
7. Flexible Size Customization
Covering a complete thickness range from 2mm to 200mm and supporting customized length and width dimensions, the steel plate can match diverse application needs, ranging from light structural parts to heavy-duty industrial engineering projects.
8. Stable Global Supply Capacity
Q235B is a mass-produced mature steel grade with sufficient stock and stable production capacity. It can support bulk order demands for international infrastructure and construction projects, with flexible delivery cycles to guarantee timely shipment for global clients.
Note:
1.Free sampling, 100% after-sales quality assurance, Support any payment method;
2.All other specifications of round carbon steel pipes are available according to your requirement (OEM&ODM)! Factory price you will get from ROYAL GROUP.
| Standard Packaging | Protection Measures |
| Steel plates are packed in seaworthy export bundles Each bundle is securely strapped with steel strips Edges protected to prevent damage during handling and transportation Optional protection: plastic film wrapping / anti-rust oil coating |
Waterproof plastic sheet covering to prevent moisture and rust Wooden supports or pallets (optional) for stable loading Anti-corrosion treatment available upon request Suitable for long-distance ocean shipping and multi-handling logistics |
| Loading Method | Shipping Options |
| Loaded in containers (20ft / 40ft) or bulk vessel shipment Bundles lifted by crane using steel slings Proper weight distribution to ensure safe transportation |
Ocean freight (main export method) Rail or truck transport for inland delivery Door-to-port or port-to-port service available |
| Delivery Time | Export Documents (Optional Support) |
| Standard production & delivery: 15–30 days Depends on order quantity, specifications, and customization requirements Urgent orders can be arranged based on production schedule |
Commercial Invoice Packing List Mill Test Certificate (MTC) Certificate of Origin (CO / Form E / Form B if required) SGS / Third-party inspection report (optional) |
Transportation: Express (Sample Delivery), Air, Rail, Land, Sea shipping (FCL or LCL or Bulk)
1. What is the composition of GB/T700 Q235B structural steel plate?
Q235B is a standard carbon structural steel plate under the GB/T 700 standard. It has good weldability, formability, and mechanical properties, making it suitable for construction and engineering fields.
2. What are the main application areas of Q235B steel plate?
Q235B steel plate has a wide range of applications, including construction, bridges, and factories.
3. What sizes are available?
Our Q235 Carbon Steel Plate range in thickness from 2 mm to 200 mm, width from 1000 mm to 2500 mm, and length up to 12000 mm. Custom sizes and processing services are available.
4. What quality documents do you provide?
We can provide, according to your requirements, a Factory Inspection Certificate (MTC), chemical composition and mechanical property test reports, and inspection reports from third-party inspection agencies (such as SGS, BV, TUV, etc.).
5. Why Choose Royal Steel Group?
Royal Steel Group offers you the highest quality Q235B steel plates at highly competitive prices, along with customized processing services, reliable global shipping, and professional export support. We have extensive experience in handling global projects.
-
Astm A53 sch40 Gas and Oil Seamless Steel Tube
-
Q345 6mm 8mm 9mm 12mm Black Surface Iron Ship S...
-
EN 10025 S275JR / J0 / J2 Hot Rolled Steel Plat...
-
ASTM A36 Hot Rolled Ship Building Steel Plate S...
-
ASTM A709 Heavy Steel Plate | Bridge Structural...
-
Q235B Q355B Medium Thick Carbon Steel Plate | H...
