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Help CenterQ235 Q345 Cold Rolled Carbon Steel Coil 0.5-20mm Thickness 600-2000mm Width Custom Length for Sheet Metal Parts
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Hemaokang Steel (Shandong) Co., Ltd. is a dedicated supplier of Q235 and Q345 cold rolled carbon steel coils, offering thicknesses from 0.5 mm to 20 mm and widths from 600 mm to 2000 mm. These coils are designed for manufacturers of sheet metal parts who need consistent material dimensions, a clean surface, and dependable processing performance. Our cold rolled carbon steel coils are suitable for stamping, bending, blanking, and many other metalworking operations. We support buyers with custom length requirements, making it easier to integrate our material into your production line.
Cold rolled carbon steel is produced by reducing hot rolled material at room temperature, which improves surface finish, flatness, and dimensional accuracy. This makes it a practical choice for sheet metal parts that require tight tolerances and clean appearance. The Q235 and Q345 grades offer different strength levels, allowing you to select a material that matches your structural or forming requirements. With our coil sizes and processing options, you can use the same source for brackets, panels, enclosures, chassis components, and many other parts.
Key Features at a Glance- Thickness range: 0.5 mm to 20 mm
- Width range: 600 mm to 2000 mm
- Length: custom, supplied as coil or cut-to-length sheets
- Material grades: Q235 and Q345 carbon steel
- Cold rolled surface with improved flatness and smoothness
- Good weldability and formability for sheet metal processing
- Custom slit widths and edge treatments available upon request
- Quality management system supported by ISO9001 certification
| Parameter | Value or Option |
| Material | Q235 / Q345 carbon steel |
| Thickness | 0.5–20 mm |
| Width | 600–2000 mm |
| Length | Custom; coil or cut-to-length sheet |
| Surface | Cold rolled, smooth; oiled or dry available upon request |
| Tensile strength | Q235: 370–500 MPa; Q345: 470–630 MPa (reference) |
| Yield strength | Q235: about 235 MPa; Q345: about 345 MPa |
| Applications | Sheet metal parts, brackets, enclosures, panels, structural parts |
| Processing | Stamping, bending, cutting, slitting, welding |
| Certifications | ISO9001 |
| Port of loading | Qingdao, China |
The combination of a wide thickness range and a wide width range gives fabricators flexibility when planning their part layouts. For example, a manufacturer who produces small brackets can use our coils for continuous stamping processes, while a manufacturer of large enclosures can request cut-to-length sheets to minimize material waste. Custom lengths are available upon request, and we can work with your drawings or production schedule to determine a practical supply plan.
Material Performance and FormabilityBoth Q235 and Q345 carbon steels are widely used in general metal fabrication. Q235 offers a good balance of strength, ductility, and cost, making it one of the more common choices for sheet metal parts that do not face extremely heavy loads. Q345 provides higher yield and tensile strength, which can help reduce material thickness in structural applications without sacrificing safety. Because the coils are cold rolled, they generally show a smoother surface and more consistent thickness than hot rolled materials. This is especially helpful for parts that will later be painted, powder coated, or assembled with tight gaps.
Processing Advantages- Good stamping performance: the material can be punched and formed with predictable results.
- Stable thickness profile: helps maintain consistent part weights and dimensions from lot to lot.
- Clean surface: suitable for parts requiring a smooth visual finish.
- Weldable: Q235 and Q345 are common choices for welded assemblies when proper procedures are followed.
- Bendable edges: reliable behavior during bending and folding operations.
- Cost-effective: the range of thicknesses and widths allows you to match the material to your actual end-use requirement.
Cold rolled carbon steel coils from our range can be used to produce a wide number of sheet metal components. These include mounting brackets, reinforcement plates, chassis parts, electrical enclosures, machine covers, frames, shelves, and interior structural pieces. The material is often selected for production runs where consistency and processability are important. It is also suitable for secondary operations such as drilling, tapping, welding, and surface treatment, provided the correct process parameters are used.
For load-bearing components, the higher strength of Q345 may allow you to use a thinner sheet and achieve the necessary performance. For decorative or low-stress panels, Q235 often provides a more economical solution. The choice between the two grades depends on your final part requirements, and our team can help you confirm the appropriate option based on your application.
We understand that every manufacturing order is different. Therefore, we offer a range of optional services to align the steel coil with your production system. Custom widths can be produced through slitting, and custom lengths can be provided by cutting coils into sheets. Edge conditions, surface protection, and packaging methods can be adapted to protect the material during sea transport and handling. For large orders, mill-edge or trimmed-edge options may be discussed. Buyers are encouraged to share their specific dimensions, grade, and processing requirements before ordering so that we can prepare a suitable product specification.
Why Order from Hemaokang SteelWe are a steel trading and supply company established in 2025 and based in Liaocheng, Shandong, China. From our location, we can manage orders for overseas customers in North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, the Middle East, East Asia, Western Europe, Central America, Northern Europe, Southern Europe, South Asia, and the domestic market. Our export team has practical experience in handling international steel shipments, and our annual export value is in the range of US$50 million to US$100 million. With 51 to 100 employees, we are able to respond to inquiries, support order follow-up, and coordinate logistics in a structured way.
Our company operates with an ISO9001 quality management system, which supports consistent handling of incoming materials, order verification, and delivery procedures. We focus on supplying reliable coils for B2B customers who need predictable material quality and responsive service. Because all shipments leave from Qingdao Port, we can offer efficient export logistics to many destinations worldwide. If you are looking for a dependable partner for your sheet metal steel supply, please contact us with your required grade, thickness, width, and length. We will confirm availability, provide a quotation, and discuss a delivery plan that matches your project schedule.
Frequently Asked Questions-
Q: What thickness and width ranges are available for the cold rolled steel coil?
A: The available thickness range is 0.5 mm to 20 mm, and the width range is 600 mm to 2000 mm. Custom widths can also be discussed for orders that require slitting. -
Q: Can I order cut-to-length sheets instead of coils?
A: Yes, custom lengths are available. You can order coils for continuous processing or cut-to-length sheets for discrete sheet metal parts. Please provide your preferred dimensions so that we can confirm the cutting option. -
Q: Which grade should I choose, Q235 or Q345?
A: Q235 is suitable for general sheet metal parts that do not require very high strength. Q345 provides higher yield and tensile strength, which is helpful for structural or load-bearing parts. Our team can help you evaluate the best option for your application. -
Q: Is the material suitable for stamping and bending?
A: Cold rolled carbon steel generally offers good formability and is commonly used for stamping, bending, and forming. The exact tooling and process parameters depend on the part geometry, thickness, and required mechanical properties. -
Q: Do you provide material certificates and ISO9001 documentation?
A: Our quality management system is supported by ISO9001 certification. Material certificates and related shipping documents can be discussed as part of the order arrangement to support your incoming inspection and traceability needs. -
Q: What surface treatments are available?
A: The standard cold rolled surface is smooth and clean. Options such as oiled or dry surfaces, and special edge conditions, can be arranged upon request depending on your processing and storage requirements. -
Q: How is the coil packaged for sea export?
A: Coils are generally secured with suitable packaging materials, steel strapping, and protective wrapping to prevent damage during transit. Specific packaging requirements can be discussed with our export team before shipment. -
Q: How can I request a quotation or sample to test the material?
A: You can send your target grade, thickness, width, length, and quantity to our team. We will confirm availability, provide export terms, and arrange small trial orders or sample pieces when possible.
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