Q345B Q355B Low Alloy High Strength Manufacturer Hot Rolled Steel Coil
Complete materials available
Can supply hot rolled steel sheet/coil,cold rolled steel sheet/coil,stainless steel sheet/coil
- Overview
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Product Induction
Our Q345B and Q355B low-alloy high-strength steel coils are manufactured using a continuous hot-rolling process and are the ideal choice for demanding applications.
Advantages:
Excellent strength-to-weight ratio: These steel coils offer an exceptionally high strength-to-weight ratio, making them ideal for projects that require both durability and weight reduction.
Superior weldability: These steel coils are easy to weld, facilitating seamless integration into various structures and components.
Low-Temperature Toughness: Designed specifically for cold environments, ensuring reliable performance under various climatic conditions.
Weather Resistance and Corrosion Resistance: Enhanced resistance to environmental factors extends the service life of structures and components made from these coils.
Applications:
Construction and Infrastructure: Suitable for steel-framed industrial buildings and high-rise structures, providing the necessary strength and stability.
Automotive Manufacturing: Used in the production of automotive longitudinal beams and other structural components, helping to enhance vehicle safety and efficiency.
Construction Machinery: Suitable for crane booms, dump truck frames, and other heavy machinery, providing exceptional durability and reliability.
Shipbuilding and Offshore Engineering: Suitable for ship hulls and offshore platforms, where strength and corrosion resistance are critical.
Specification
| Product Name | Q345B Q355B Low Alloy High Strength Manufacturer Hot Rolled Steel Coil |
| Technique | Hot Rolled,or can supply cold rolled steel coil |
| Grade | Q345B Q355B |
| Steel Grade Stocking |
A36,Q235B,SS400,S235JR,A572GR50,Q345B,S355JR,S275JR,A283GRC,SPHT,SG295,A516,GR70,16MO3 P265GH,P355GH,SA387,SAE1006,SAE1008,SAE1010,SAE1012,SAE1016,SAE1018,SAE1001,SAE1002,SAE10012M, SAE1016M, SPHE,S45C,S48C,SAE1022,SAE1025,SAE1050,SAE1065,A572GR65,A572GR60 |
| Thickness | 1.5-25mm |
| Width | 900-2500mm |
| Coil Weight | 15-30 ton |
| Delivery Time | 7 days |
| Service | OEM/ODM |
chemical composition
| Grade | C % | Mn % | Si % | P % | S % | N % |
| Q345B | ≤0.20% | 1.00%-1.60% | ≤0.55% | ≤0.035% | ≤0.035% | - |
| Q355B | ≤0.24% | ≤1.60% | ≤0.55% | ≤0.035% | ≤0.035% | ≤0.015% |
mechanical properties
| Grade | tensile strength（MPa） | yield strength（MPa） | Elongation% |
| Q345B | 470-630 MPa | ≥345 MPa | ≥21% |
| Q355B | 470-630 MPa | ≥355 MPa | ≥21%-22% |
Product Pictures
Our factory can provide steel coils and strips of various materials and specifications
some steel coil specification
| 2.3*1500 | 2.5*1500 | 3.0*1500 | 3.5*1500 | 3.75*1500 | 4.5*1500 |
| 4.75*1500 | 5.5*1500 | 5.75*1500 | 6.0*1500 | 7.5*1500 | 7.75*1500 |
| 8.0*1500 | 9.75*1500 | 10.0*1500 | 11.5*1500 | 11.75*1500 | 13.5*1500 |
| 13.75*1500 | 15.75*1500 | Q355B,2.75*1500 | Q355B,3*1500 | Q355B,4*1500 | Q355B,6*1500 |
| Q355B,7.5*1500 | Q355B,7.75*1500 | Q355B,9.5*1500 | Q355B,9.75*1500 | Q355B,11.75*1500 | Q355B,4.75*1500 |
| Q355B,7.75*1500 | Q355B,9.75*1500 | Q355B,11.75*1500 | Q355B,15.75*1500 | Q355C,4.75*1800 | Q355C,7.75*1800 |
| Q355C,9.75*1800 | Q355C,11.75*1800 | Q355C,15.75*1800 | Q235B-H,2.75*1500 | Q235B-H,5.5*1500 | Q235B-H,5.75*1500 |
| Q235B-H,7.5*1500 |
FAQ
Q: What are the common specifications for steel coils? Can they be customized?
A:Standard stock thicknesses: 3.5 mm, 4.75 mm, 5.75 mm, 7.75 mm, 9.75 mm, 11.75 mm, 12 mm, 16 mm, etc.Width: 1500 mm, 1800 mm, 2000 mm.Coil weight: 15–30 tons per coil.
Customization available: We offer custom-length slitting (6 m, 12 m, or as per customer requirements) and slitting services.
Q: Can Q355B completely replace Q345B?
A: Yes, it can, and it offers superior performance, but the structure must be recalculated.
Q: What is the maximum length a steel coil can be uncoiled to?
A: Typically, the length of a single sheet is ≤12 meters; custom lengths are available upon request.
Q: Can steel coils be laser-cut directly?
A: The steel must first be flattened; steel coils cannot be laser-cut directly.
Q: Does the price of steel coils include shipping?
A: Generally, it does not. Shipping costs must be negotiated separately. For large orders, we can negotiate a factory-direct price.
Q: How can I get your quotation as soon as possible?
A:Please contact:
Email:[email protected]
WeChat/WhatsApp/Mobile: +8613512028034
