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Help CenterS275JR S355JR Structural Carbon Steel Coil 3mm-15mm Width 1250mm, Inner Diameter 508mm, Max Coil Weight 15MT
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Welcome to Hemaokang Steel (Shandong) Co., Ltd. We are a professional steel supplier located in Liaocheng, Shandong, China, committed to providing high-quality structural carbon steel coils at competitive prices. The S275JR and S355JR structural carbon steel coils are specifically designed for load-bearing applications where strength, durability, and weldability are essential. With an annual export value of US$50 million to US$100 million and a team of 51-100 employees, we serve customers across North America, South America, Europe, Southeast Asia, Africa, Oceania, the Middle East, and other regions. Our products are shipped from Qingdao Port, ensuring efficient logistics to global destinations.
Structural carbon steel coils in grades S275JR and S355JR are hot-rolled coils widely used in steel structures, bridges, ships, vehicles, and general engineering. These grades offer a balanced combination of strength, plasticity, and toughness, making them a popular choice for structural fabrication. The following features and specifications make our coils suitable for a wide range of applications.
Key Features:
- Available thickness range from 3mm to 15mm, accommodating various design and engineering requirements.
- Standard width of 1250mm, suitable for common fabrication processes such as cutting, stamping, forming, and bending.
- Inner diameter of 508mm, compatible with standard coil processing equipment and easier for feeding into production lines.
- Maximum coil weight of 15 metric tons, enabling stable supply and reducing downtime for coil changes.
- Available in two popular structural grades: S275JR and S355JR, allowing customers to select the appropriate mechanical properties for their specific project.
- Excellent weldability and formability, enabling efficient manufacturing of structural components with reduced production costs.
- Uniform thickness and consistent surface quality, ensuring reliable performance in finished products.
- Custom sizes and specifications are available upon request to meet special project demands.
Technical Specifications:
| Grade | S275JR / S355JR |
| Thickness | 3mm - 15mm |
| Width | 1250mm (customizable) |
| Inner Diameter | 508mm |
| Max Coil Weight | 15 MT |
| Surface | Hot rolled (mill finish) |
| Edge Condition | Mill edge; trimmed edge optional |
| Typical Applications | Construction, bridges, machinery, offshore, shipbuilding, etc. |
| Quality System | ISO9001 certified company |
| Port of Loading | Qingdao, China |
Advantages and Benefits:
- High strength-to-weight ratio reduces overall structure weight while maintaining excellent load-bearing capacity.
- Good toughness and ductility allow the material to perform well under both static and dynamic loads.
- Consistent chemical composition and mechanical properties ensure predictable performance during cutting, welding, and machining.
- Cost-effective solution for large-scale structural projects, offering a good balance between performance and budget.
- Reliable supply capacity with annual export value of US$50-100 million supports bulk and repeat orders.
- Flexible production planning and inventory management help meet urgent delivery requirements.
These structural coils can be further processed into steel plates, beams, columns, pipes, and other components. They are commonly used in workshops, warehouses, high-rise buildings, bridges, and infrastructure projects. The material can also be cold-formed or cut into custom blanks for downstream manufacturing, making it a versatile choice for many industries.
At Hemaokang Steel, we follow strict quality control procedures. Our company is ISO9001 certified, ensuring that every order is managed with standardized processes. We conduct thorough inspections on thickness, surface quality, mechanical properties, and packing before shipment. This ensures that our customers receive products that consistently meet their specifications.
As a fast-growing company established in 2025, Hemaokang Steel has achieved strong export performance and built solid partnerships with clients worldwide. With an annual export value of US$50 million to US$100 million, we are capable of supplying large quantities with stable quality. Our strategic location in Liaocheng, Shandong, which is a major steel production base in China, gives us access to abundant resources and professional logistics. From Qingdao port, we can arrange efficient sea freight to destinations all over the world. We are dedicated to creating long-term value for our customers through quality products, competitive pricing, and responsive service. Please contact us for more information or to place a trial order. We look forward to supporting your structural steel requirements.
Frequently Asked Questions:
- What is the minimum order quantity for S275JR and S355JR steel coils? The MOQ is negotiable. We can accommodate both small trial orders and large container shipments. Please contact us with your specific requirements and we will recommend a suitable quantity.
- Can you customize the width and thickness of the coils? Yes, the width and thickness can be customized according to your project needs. Please confirm the exact dimensions with our sales team so that we can prepare an accurate quotation.
- What is the typical lead time for production and delivery? Lead time depends on the order quantity and the current production schedule. Generally, it ranges from 2 to 4 weeks after order confirmation. For urgent orders, please contact us in advance so that we can explore fast-track options.
- Are sample coils or sample strips available? Yes, samples can be provided for quality evaluation. However, sample cost and shipping charges may apply depending on the destination and sample size. Please contact us to discuss the details.
- How do S275JR and S355JR differ in mechanical properties? S355JR offers a higher minimum yield strength (355 MPa) compared to S275JR (275 MPa), making it more suitable for high-stress structural applications. The appropriate grade should be selected based on the design loads and engineering specifications.
- What is the packing standard for export coils? Our coils are packed on steel skids, treated with rust prevention, and covered with export-grade packing materials to ensure safe sea transportation. Customized packing arrangements are also available upon request.
- What documents are provided with the shipment? We provide commercial invoices, packing lists, bills of lading, and material test certificates upon request. Please let us know your documentation requirements when placing an order.
- Can you supply other grades of structural steel? Yes, we also supply other structural steel grades such as S235JR, S420, and S460 subject to availability. Contact us for more information on our full product range.
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