Find out the latest hot-rolled steel coil inventory specifications and sizes.
Q355B/Q355D Hot Rolled Carbon Steel Coil – Construction & Structural Applications
| Material Standard | Yield Strength |
| Q355B/Q355D Hot Rolled Carbon Steel Coil | ≥355 MPa |
| Dimensions | Length |
| Thickness: 1.5–25 mm, Width: 1000–2000 mm, Coil Weight: 3–25 tons | Available in stock; customized lengths available |
| Dimensional Tolerance | Quality Certification |
| GB/T 1591-2008 | ISO 9001:2015, SGS / BV / Intertek Third-Party Inspection Report |
| Surface Finish | Applications |
| Hot rolled, pickled, oiled; optional anti-rust coating | Construction, bridges, pressure vessels, structural steel |
| Property Category | Property | Q355B | Q355D |
| Chemical Composition (%) | Carbon (C) | ≤ 0.20 | ≤ 0.22 |
| Manganese (Mn) | 0.50 – 0.80 | 0.50 – 0.90 | |
| Silicon (Si) | ≤ 0.35 | ≤ 0.35 | |
| Sulfur (S) | ≤ 0.045 | ≤ 0.045 | |
| Phosphorus (P) | ≤ 0.045 | ≤ 0.045 | |
| Copper (Cu) | ≤ 0.25 | ≤ 0.25 | |
| Mechanical Properties | Yield Strength (MPa) | ≥ 355 | ≥ 355 |
| Tensile Strength (MPa) | 470 – 630 | 470 – 630 | |
| Elongation (%) | ≥ 20 | ≥ 20 | |
| Hardness (HB) | ≤ 170 | ≤ 170 | |
| Standards | Standard | GB/T 1591-2008 | GB/T 1591-2008 |
| Steel Grade | Q355B | Q355D | |
| Applications | Typical Uses | Construction, bridges, pressure vessels, structural steel | Construction, bridges, pressure vessels, structural steel |
Q355B/Q355D Hot Rolled Carbon Steel Coil Sizes
| Coil Specification | Range |
| Thickness (mm) | 1.5 – 25 |
| Width (mm) | 800 – 2000 |
| Outer Diameter (mm) | 1000 – 2000 |
| Inner Diameter (mm) | 508 / 610 |
| Weight per Coil (tons) | 3 – 25 |
| Steel Grade | Q355B / Q355D |
| Standard | GB/T 1591-2008 |
| ✅ Notes: | |
| Thickness and width can be customized according to customer requirements. | |
| Coil weight depends on thickness, width, and inner/outer diameter combination. | |
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| Construction Industry | General Engineering |
| Structural steel for buildings, bridges, and industrial plants. | Manufacturing of containers, storage tanks, and silos. |
| Manufacturing of steel frames, beams, and columns. | Fabrication of industrial platforms, fences, and frameworks. |
| Reinforcement plates, roofing sheets, and steel decks. | Suitable for welded constructions due to good weldability. |
| Mechanical and Manufacturing Industry | Key Advantages in Applications |
| Fabrication of machinery parts, automotive components, and equipment housings. | Excellent weldability and machinability. |
| Production of steel pipes and tubes. | Good elongation and toughness suitable for structural use. |
| Used in making welded structures and fabrication works requiring moderate strength. | Cost-effective and widely available in various sizes. |
| Metal Processing | Typical End Products |
| Cold bending and forming into sheets, strips, or plates. | Steel plates, strips, and sheets. |
| Surface coating and galvanization for corrosion-resistant applications. | Pipes, tubes, and profiles. |
| Roll forming into profiles, channels, and angles. | Machinery bases, frames, and industrial structures. |
1) Branch Office - Spanish-speaking support, customs clearance assistance, etc.
2) Over 5,000 tons of stock in stock, with a wide variety of sizes
3) Inspected by authoritative organizations such as CCIC, SGS, BV, and TUV, with standard seaworthy packaging
1️⃣ Bulk Cargo
works for large shipments. The coils are loaded directly onto ships or stacked with anti-slip pads between the base and the coil, wooden wedges or metal wires between coils and surface protection with rain-proof sheets or oil for rust prevention.
Pros: High payload, low cost.
Note: Specialized lifting gear is needed and condensation and surface damage must be avoided during haulage.
2️⃣ Containerized Cargo
Good for medium to small shipments. The coils are packed one by one with waterproofing and anti-rust treatment; a desiccant can be added in the container.
Advantages: Provides superior protection, easy to handle.
Drawbacks: Higher cost, decreased container loading volume.
Stable cooperation with shipping companies such as MSK, MSC, COSCO efficiently logistics service chain, logistics service chain are we to your satisfaction.
We follow the standards of quality management system ISO9001 in all procedure, and have strict control from packaging material purchase to transport vehicle scheduling. This guarantees the H-beams from the factory all the way to the project site, helping you build on a solid foundation for a trouble free project!
1. What standard does Q235B comply with?
Q235B conforms to GB/T 700 (China National Standard) for carbon structural steel.
2. What are the mechanical properties of Q235B HR Steel Coil?
Yield Strength: ≥235 MPa
Tensile Strength: 370–500 MPa
Elongation: ≥26% (depending on thickness)
3. What are the typical sizes available?
Thickness: 1.5 – 20.0 mm
Width: 1000 – 2000 mm
Coil Weight: 3 – 25 tons
Coil ID: 508 mm / 610 mm
Custom sizes are available upon request.
4. Is Q235B easy to weld and process?
Yes. Q235B has excellent weldability and formability, suitable for cutting, bending, stamping, and welding without preheating under normal conditions.
5. How does Q235B compare to international standards?
Q235B is equivalent or similar to:
ASTM A36 (USA)
S235JR (EN 10025-2)
SS400 (JIS G3101)
Contact Details
Address
Kangsheng development industry zone,
Wuqing district, Tianjin city, China.
Phone
Hours
Monday-Sunday: 24-hour Service
