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Q235B C-Shaped Steel - GB Standard Mill Direct Factory Supplier
China
Supplier's customization ability
- Drawing-based customization
- Sample-based customization
- Full customization
Minimum order quantity: 1 ton
Shipping total: To be negotiated
- Lead time:
- confirmed with the quotation
- Packaging:
- standard export packing
- Samples:
- available on request
Product details
Technical Specifications of Q235B C-Shaped Steel
| Property | Parameter | Description |
|---|---|---|
| Product Name | Q235B C-Shaped Steel | Hot-rolled or cold-formed C-channel structural steel profile |
| Material Grade | Q235B | Equivalent to ASTM A36, EN S235JR, JIS SS400 |
| Standard Compliance | GB/T 6725, GB/T 700 | Chinese national standards for cold-formed steel sections and carbon structural steel |
| Carbon (C) | ≤ 0.20% | Per GB/T 700 chemical composition requirements |
| Manganese (Mn) | ≤ 1.40% | Ensures adequate strength and toughness |
| Silicon (Si) | ≤ 0.35% | Deoxidizer element for improved steel quality |
| Phosphorus (P) | ≤ 0.045% | Controlled to prevent cold brittleness |
| Sulfur (S) | ≤ 0.045% | Controlled to prevent hot shortness |
| Tensile Strength | 370–500 MPa | Per GB/T 700-2006 standard specification |
| Yield Strength | ≥ 235 MPa | Minimum yield point for thickness ≤ 16 mm |
| Elongation | ≥ 26% | Measured on standard gauge length specimen (A5) |
| Height Range | 80–300 mm | C-channel web height, customizable per project requirements |
| Flange Width | 40–100 mm | Standard and custom widths available |
| Thickness | 1.5–6.0 mm | Wall thickness of C-shaped profile section |
| Length | 6,000–12,000 mm | Standard lengths; custom cutting available upon request |
| Surface Finish | Hot-dip galvanized / Painted / Plain | Galvanized coating typically 60–275 g/m² per GB/T 2518 |
| Application | Steel structures, purlins, wall girts, framing | Widely used in industrial buildings, warehouses, and prefab steel structures |
| Certification | ISO 9001, SGS, Mill Test Certificate (EN 10204 3.1) | Third-party inspection and material traceability provided |
| Packaging | Bundled with steel strips, waterproof wrapping | Seaworthy packaging suitable for container or bulk vessel shipment |
| MOQ | 5 Metric Tons | Smaller quantities negotiable for trial orders |
Q235B C-Shaped Steel - GB Standard Mill Direct Factory Supplier
Q235B C-shaped steel is one of the most versatile and cost-effective structural steel profiles available for modern construction and industrial applications. Manufactured from Q235B carbon structural steel per GB/T 700 standards, this cold-formed section delivers reliable mechanical performance at mill-direct rates. As a trusted factory supplier, we provide a comprehensive range of Q235B C-shaped steel channels with precise dimensional tolerances, consistent material properties, and flexible order quantities to meet the demands of steel structure projects, purlins, framing systems, and support brackets across global markets.
What Is Q235B C-Shaped Steel?
Q235B C-shaped steel is a cold-formed structural profile manufactured by roll-bending Q235B-grade hot-rolled coil or strip into a C-shaped cross-section. The "Q" in Q235B designates yield strength — a minimum of 235 MPa for thicknesses ≤16 mm per GB/T 700-2006. The "B" suffix indicates guaranteed impact toughness at 20°C with a minimum Charpy V-notch value of 27 J. This profile serves critical roles as purlins in steel-framed buildings, wall girts, support channels in solar panel mounting systems, and lightweight framing members in prefabricated structures.
Q235B C-Shaped Steel Technical Specifications
Our Q235B C-channel steel is produced in strict accordance with GB/T 700 (material) and GB/T 6725 (cold-formed section) standards. Below are the key technical parameters:
| Property | Specification |
|---|---|
| Steel Grade | Q235B per GB/T 700-2006 |
| Yield Strength | ≥235 MPa (thickness ≤16 mm) |
| Tensile Strength | 370–500 MPa |
| Elongation (A₅) | ≥26% |
| Carbon Content | ≤0.20% |
| Manganese Content | ≤1.40% |
| Density | 7.85 g/cm³ at 20°C |
| Height Range | 80 mm – 300 mm |
| Flange Width | 40 mm – 100 mm |
| Thickness | 1.5 mm – 6.0 mm |
| Length | 6 m, 9 m, 12 m or custom cut |
| Surface Treatment | Hot-dip galvanized / painted / bare |
| Impact Toughness (20°C) | ≥27 J (Charpy V-notch) |
Key Advantages of Q235B C-Channel Steel
Choosing Q235B grade for C-shaped steel profiles offers several measurable benefits. The guaranteed yield point of 235 MPa provides dependable load-bearing capacity for secondary structural members while maintaining superior weldability due to its low carbon equivalent (≤0.38). The cold-forming process produces tight dimensional tolerances of ±1.0 mm on height and ±0.5 mm on flange width, ensuring precise fit during erection. Compared to hot-rolled channels, C-shaped sections reduce material weight by 15%–30% while maintaining comparable section modulus, translating into lower transportation costs and faster installation cycles.
Common Applications
- Steel structure purlins and girts — roof and wall support in industrial warehouses and workshops
- Solar mounting systems — ground-mount and carport racking structures
- Prefabricated buildings — light-gauge framing for modular construction
- Cable trays and support brackets — electrical and mechanical infrastructure
- Agricultural facilities — greenhouse frames and livestock building structures
Get a Competitive Quote for Q235B C-Shaped Steel
As a mill-direct factory supplier, we eliminate middleman markups and deliver premium-grade Q235B C-shaped steel at cost-effective pricing. Whether you need standard sizes or custom dimensions, our production line accommodates orders from 5 tons to full vessel loads with consistent quality assurance.
- 24/7 customer support available
- Free samples for quality evaluation
- Competitive pricing for bulk orders
- Professional technical consultation
Contact us today to get your free quote within 24 hours!
Ratings & Reviews
Know your supplier
Factory Introduction
Hongji Profiles Co., Ltd. is a professional manufacturer and supplier specializing in the R&D, production and sales of high-quality steel profiles. With years of experience in the metallurgical industry, we have earned a solid reputation for reliability, precision and customer-centric service, providing global clients with premium steel profile solutions for diverse industrial and architectural needs.
Our core business covers a full range of steel profiles, including angle steel, channel steel, I-beams, H-beams, C-section steel, Z-section steel, flat steel and custom special steel profiles. These products are widely applied in building structures, bridges, transmission towers, industrial machinery, automotive components and shipping. We strictly control material selection, adopting high-quality steel grades such as S235JR, S355JR, SS400, A36 and Q355 series to ensure excellent mechanical properties, durability and corrosion resistance.
Customer feedback
FAQ
Supplier's customization ability
- Drawing-based customization
- Sample-based customization
- Full customization
Minimum order quantity: 1 ton
Shipping total: To be negotiated
- Lead time:
- confirmed with the quotation
- Packaging:
- standard export packing
- Samples:
- available on request
