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Carbon Steel Flat Bar
Product Overview
Carbon Steel Flat Bar is a rectangular-shaped steel product manufactured from high-quality carbon steel through hot rolling or cold drawing processes. Known for its strength, durability, and versatility, carbon steel flat bar is widely used in construction, fabrication, machinery manufacturing, shipbuilding, and general engineering applications.
With excellent weldability, machinability, and mechanical performance, carbon steel flat bar is suitable for structural support, framework construction, brackets, base plates, and reinforcement components. It offers a cost-effective and reliable solution for both industrial and commercial projects.
Core Features (Why You Choose Us)
From the perspective of buyers, we focus on solving your pain points such as unstable quality, high cost, and inconvenient transportation. Our carbon steel flat bars have the following advantages:
| Feature | Details | Benefits for You |
| Stable Quality | Strict raw material selection, advanced production equipment, and full inspection (X-ray, ultrasonic, surface inspection) before delivery. | Reduce defective products, avoid project delays, and ensure long-term use without quality problems. |
| Cost-Effective | Direct factory supply, no middlemen; mass production reduces unit cost; competitive price for bulk orders (MOQ ≥10 tons). | Lower your purchasing cost, improve profit margins, and save budget for your projects. |
| Strong Customization | Support customization of grade, thickness, width, length, surface treatment, and packaging; fast sample production (5-10 days). | Perfectly match your specific project needs, no need to modify materials additionally, saving time and labor. |
| Easy Processing | Good weldability, cuttability, and bendability; low carbon grades can be easily welded without cracking; high carbon grades can be heat-treated to enhance wear resistance. | Simplify your post-processing steps, improve production efficiency, and reduce processing costs. |
| Convenient Logistics | Standard export seaworthy packaging (waterproof, anti-rust); loading ports: Tianjin, Qingdao, Shanghai, Guangzhou; delivery time: 10-30 days (depending on order quantity). | Ensure goods are delivered on time, avoid damage during transportation, and reduce logistics risks. |
Key Specifications (Customizable for Your Needs)
We offer standard specifications that comply with mainstream international standards (ASTM, GB, DIN, BS, EN, JIS) and support full customization based on your drawings or project requirements. The following table lists the common specifications for your reference:
| Item | Specification Details | Remarks (For Buyers) |
| Grade | Low Carbon: Q195, Q235 (A/B), A36, 1018, S235JRMedium Carbon: Q255, Q275, 1045, S275JRHigh Carbon: 1060, 1080, S355JR | Choose based on your project’s strength, weldability, and wear resistance needs; low carbon for general use, high carbon for tools/dies. |
| Thickness | 1.5mm - 60mm | Common thickness: 3mm-30mm; customized thickness available for special projects (minimum 1mm). |
| Width | 10mm - 200mm | Widely used width: 20mm-100mm; maximum customizable width up to 2500mm for large-scale construction. |
| Length | 1m - 12m | Standard length: 6m/12m; cut-to-length service available (no extra charge for regular lengths). |
| Surface Treatment | Black oxide, pickling, phosphating, hot-dip galvanizing, cold galvanizing, anti-rust oil | Galvanized for outdoor/marine use (anti-corrosion); pickling for easy welding/machining; customized treatment available. |
| Production Process | Hot-rolled, cold-rolled | Hot-rolled: cost-effective, suitable for large-scale construction; cold-rolled: high precision, smooth surface for machinery parts. |
| Certifications | ISO 9001, SGS, BV, MTC (Mill Test Certificate) | All products come with MTC; third-party inspection available upon request (SGS/BV) to ensure quality compliance. |
A standard size chart for carbon steel flat bars
| Thickness | Width | Standard Length | Weight per Meter |
| (mm) | (mm) | (m) | (kg) |
| 3 | 20 | 6 | 1.12 |
| 4 | 25 | 6 | 1.56 |
| 5 | 30 | 6 | 2 |
| 6 | 40 | 6 | 2.88 |
| 8 | 50 | 6 | 3.85 |
| 10 | 60 | 6 | 4.81 |
| 12 | 80 | 6 | 5.77 |
| 15 | 100 | 6 | 7.25 |
| 20 | 150 | 6 | 9.62 |
| 20 | 200 | 6 | 12.15 |
Applications (Focus on Your Practical Needs)
Our carbon steel flat bars are versatile and widely used in various industries, helping you reduce material costs and improve project efficiency. The main applications include:
Construction Industry: Used as structural supports, beams, frames, handrails, and foundation reinforcement in buildings, bridges, and steel structures. It has strong load-bearing capacity and durability, ensuring the safety and stability of your construction projects.
Machinery Manufacturing: Processed into machine parts, gears, brackets, and tool bases. The good machinability (welding, cutting, bending) allows easy processing into various shapes, matching your production needs for machinery components.
Automotive & Shipbuilding: Used in automotive frames, ship hull supports, and marine equipment. Galvanized flat bars have excellent corrosion resistance, adapting to harsh marine and outdoor environments.
Agricultural & Infrastructure: Applied to agricultural greenhouses, farm vehicles, railway accessories, and pipeline supports. Cost-effective and durable, suitable for large-scale use in agricultural and infrastructure projects.
Other Fields: Used as decorative materials, tool making (high carbon grade), and furniture hardware. Customizable specifications meet your diverse application needs.
FAQ (Frequently Asked Questions for Buyers)
We have sorted out the most common questions from buyers to help you quickly solve doubts and speed up the purchasing process:
Q: What is your MOQ (Minimum Order Quantity)? Can I order a small quantity for sample testing?
A: Our standard MOQ is 10 tons. For sample testing, we provide free inventory samples (you only need to bear the shipping cost); customized samples take 5-10 days and a small sample fee (refundable when placing bulk orders).
Q: How do you ensure the quality of the products? Can I arrange third-party inspection?
A: All products are produced in accordance with international standards and undergo strict inspection (raw material inspection, production process inspection, finished product inspection).
We provide MTC with each shipment; third-party inspection (SGS/BV/TUV) is available upon your request, and the inspection cost can be negotiated.
Q: Can you customize the specifications according to my drawings? What is the lead time for customized orders?
A: Yes, we fully support customization based on your drawings or detailed requirements (grade, size, surface treatment, etc.).
The lead time for customized orders is 15-30 days, depending on the order quantity and customization difficulty; urgent orders can be prioritized with negotiation.
Q: What are the payment terms and price terms?
A: Price terms: EXW, FOB, CIF, CFR (optional). Payment terms: T/T (30% deposit, 70% before delivery), L/C, Western Union, PayPal, D/P, D/A (negotiable for bulk long-term cooperation).
Q: What should I do if there are quality problems after receiving the goods?A: Please take photos/videos of the defective products and contact us within 7 days of receiving the goods. We will verify the problem immediately; if it is our quality issue, we will provide solutions such as replacement, refund, or compensation according to your needs, ensuring your rights and interests are protected.
Contact our sales team today for a quotation or to discuss your project requirements. We are committed to providing high-quality flat bars that meet your exact specifications and delivery deadlines.
Your trusted partner in profile steel solutions.For further technical information, pricing, or customization, please contact our sales team:
Tel/WA/Wechat: +86 13225105678
Email: sales01@duohessplate.com
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