Q235B Steel Plate (GB/T 700) Mild Carbon Steel Plate for Structural Use
| Basic Information | |
| Attribute | Value/Details |
| Product Name | Hot Rolled Steel Plate |
| Steel Grade | Q235B steel plate |
| Standard | GB/T 700 steel plate |
| Type | Industrial Steel Fabrication Plate |
| Technology | Hot Rolled |
Chemical Composition (Typical for Q235B)
| 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% |
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 gauge and thin sheet metal panels, small enclosures. |
| 5 – 8 | 1000 – 2000 | 2000 – 8000 | 39.3 – 62.8 | Machinery parts, mechanical engineering and mo. |
| 9 – 12 | 1200 – 2200 | 3000 – 10000 | 70.7 – 94.2 | Beams, Girders, Struts, Braces, Columns. |
| 14 – 20 | 1500 – 2400 | 4000 – 12000 | 109.9 – 157.0 | Bridges, rigid frame, truss, compression arch, construction. |
| 22 – 40 | 1500 – 2500 | 6000 – 12000 | 172.6 – 314.0 | Heavy engineering, industrial plant. |
| 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, plant engineering. |
1. Reliable Structural Stability
Manufactured in line with GB/T 700 national standards, Q235B hot rolled steel plate delivers stable and trustworthy mechanical performance with a minimum yield strength of 235 MPa. Its solid load-bearing capability makes it a practical choice for various structural projects, covering building construction, bridge works and industrial frame fabrication.
2. Excellent Weldability & Processing Flexibility
With low carbon proportion and balanced chemical components,Q235B steel plate comes with good ductility and superior welding performance. It handles routine fabrication work including cutting, bending and drilling very well, with no cracks or structural deformation during hot and cold forming processes, ensuring smooth on-site processing.
3. Outstanding Cost-Efficiency
Compared with high-end structural steel grades that come with higher costs, Q235B carbon steel fully satisfies the general strength and construction standards of most engineering projects. It maintains stable working performance in long-term service while greatly lowering overall project budgets, offering a highly cost-effective solution for structural steel applications.
4. Broad & Practical Application Coverage
As one of the most popular and mature carbon structural steel materials, Q235B features strong versatility. It is widely used in infrastructure development, steel structure processing, mechanical equipment manufacturing, road and bridge projects, warehouse construction and general civil engineering, and is well recognized in both domestic and global steel markets.
5. Stable Chemical Composition & Reliable Quality
All Q235B steel plates are produced under strict GB/T 700 standard requirements. Key elements including carbon, manganese, sulfur and phosphorus are well regulated within qualified ranges. Strict component control minimizes batch-to-batch differences, delivering steady and dependable performance for all kinds of engineering applications.
6. Great Workability for Secondary Fabrication
This steel grade boasts excellent overall processability. It can be freely cut, welded, drilled and shaped according to project needs. Whether for standard processing or custom complex structural fabrication, it fits various production scenarios and effectively improves overall construction and machining efficiency.
7. Diverse Sizes & Customized Options
We offer a full size range of GB/T700 Q235B steel plate, with thickness spanning from 2mm to 200mm. Length and width can also be tailored to customer requirements. It perfectly covers both lightweight structural components and heavy-duty industrial engineering applications with flexible dimension solutions.
8. Sufficient Production & Stable Global Supply
As a mature and mass-produced carbon structural steel, Q235B features stable output and adequate inventory. It can fully meet large-volume ordering demands for overseas infrastructure and construction projects. With adjustable production and delivery schedules, we ensure on-time shipments for global customers.
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 Export Packaging | Protection Measures |
| All steel plates are packed with professional seaworthy packaging for long-distance ocean transportation. Each bundle is tightly fixed with steel strapping to avoid loosening during transit. We add edge protection to prevent bending, scratching and other mechanical damage. Plastic film wrapping and anti-rust oil treatment are also available upon request for enhanced corrosion resistance. | To keep steel plates in good condition during transit, we cover all bundles with waterproof plastic sheets to block moisture and avoid surface rust. Wooden supports and pallets are optional to stabilize the packages and prevent extrusion damage. Custom anti-corrosion treatment is also available on customer request. This practical packaging solution fully adapts to long-distance sea freight and repeated loading and unloading in logistics. |
| Scientific Loading Solution | Shipping Options |
| Shipment can be arranged via 20ft/40ft containers or bulk cargo vessels based on order volume and customer needs. All steel bundles are lifted with professional steel slings and cranes during loading. We strictly control cargo stacking and weight distribution to ensure stable and safe transportation with no tilting or cargo shifting risks. | Sea freight serves as our primary export shipping method for overseas orders. For domestic and inland transportation, we provide truck and railway delivery services. We support flexible logistics solutions, including port-to-port and door-to-port shipping modes to meet different customer logistics needs. |
| Flexible Delivery Schedule | Export Supporting Documents |
| Our regular production and delivery cycle ranges from 15 to 30 working days. The exact lead time varies according to order quantity, plate specifications and customized processing demands. For urgent project orders, we can adjust the production plan appropriately to support faster delivery subject to factory schedule. | We can provide a complete set of export documents to support customs clearance and project inspection, including commercial invoices and packing lists. Full official factory mill test certificates (MTC) are supplied to guarantee product quality. We also offer certificates of origin (CO, Form E, Form B and other applicable forms) as required. Third-party inspection reports such as SGS certification can be arranged optionally. |
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 mainstream carbon structural steel conforming to GB/T 700 standards. It features balanced chemical components, stable mechanical performance, great weldability and bendability, suitable for most conventional construction and structural engineering applications.
2. What are the main application areas of Q235B steel plate?
Versatile in use, Q235 Carbon Steel Plate are widely applied in building construction, bridge and highway engineering, factory structures, steel frame fabrication and various infrastructure projects.
3. What sizes are available?
We offer complete standard sizes: thickness 2mm–200mm, width 1000mm–2500mm, maximum length 12000mm. Custom dimensions and professional processing services are also available to meet diverse project needs.
4. What quality documents do you provide?
We can provide complete official quality certificates to support customers’ customs clearance and project inspection. The supplied documents include factory mill test certificates (MTC), chemical and mechanical performance test reports. Third-party inspection certifications from SGS, BV, TUV and other authoritative institutions can also be provided on request.
5. Why Choose Royal Steel Group?
Royal Steel Group - China steel plate manufacturer has long been engaged in steel export business. We deliver premium Q235B steel plates at competitive market prices, with one-stop customized processing solutions. Backed by stable production capacity and mature global logistics systems, we ensure reliable shipment arrangements and professional after-sales export support. With rich experience in serving overseas engineering projects, we provide trustworthy and cost-effective steel supply services for global clients.
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