Your Professional Steel Coil Manufacturer
TIANJIN BO YI DA IMPORT AND EXPORT CO.,LTD is a modern production and exporting enterprise with professional experiences in international business.Our Product: galvanized steel, galvalume steel, PPGI, PPGL, hot rolled steel, cold rolled steel, stainless, wire rod, H-beam, steel pipe etc. The company is committed to providing customers with high-quality and reasonable price steel products and strives to create value for customers as its own responsibility.
Why Choose Us
High Quality
We take pride in the craftsmanship of our products and ensure that each one meets our strict standards for quality.
Production Market
Our products are exported to all over the world, including Africa (West Africa, East Africa, South Africa), Southeast Asian countries (Philippines, Vietnam, Singapore, Indonesia), and South American countries, etc. Our products are widely used in construction projects.
Global Shipping
Our company has a strong and professional logistics and distribution system, ready to meet our customers' various needs at any time.
End-to-end Services
☆Pre-Sales service
* Inquiry and consulting support.
* Sample testing support
* View our Factory.
☆After-Sales Service
*Videos or photos will send to customers
*100% Granutee quanlity and quantity.
*Vessel tracking.
Products Specifications
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Thickness |
0.13-1.0mm |
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Width |
750-1250mm we can slit the width as customer inquiry. |
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Standard |
AISI, ASTM, BS, DIN, GB, JIS |
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Coil ID |
508-610mm |
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Hardness |
Hard |
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Grade |
DX51D, DX52D |
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Coating |
AZ30-AZ200 |
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Applications |
Cutting sheets, making corrugated sheets, making container |
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Type |
Steel Coil |
Advantages of Steel Coil
Strength and Durability: Steel is known for its exceptional strength and durability, making steel coils suitable for demanding applications that require materials capable of withstanding heavy loads, harsh environmental conditions, and mechanical stress. Steel coils maintain their structural integrity even under extreme temperatures, making them ideal for use in construction, automotive manufacturing, and industrial equipment.
Versatility: Steel coils are available in a variety of grades, thicknesses, widths, and surface finishes, offering versatility to meet diverse requirements across different industries. Whether it's hot-rolled, cold-rolled, galvanized, or coated steel coils, they can be tailored to specific applications such as roofing, siding, tubing, automotive components, appliances, and machinery.
Cost-Effectiveness: Steel coils are cost-effective compared to many alternative materials, offering high performance at a relatively low cost. The durability and longevity of steel coils reduce maintenance and replacement expenses over time, making them an economical choice for long-term projects and applications.
Formability and Workability: Steel coils possess excellent formability and workability, allowing them to be easily shaped, welded, stamped, and machined into various forms without compromising their structural integrity. This versatility makes steel coils suitable for complex manufacturing processes and custom fabrication requirements in industries such as construction, manufacturing, and engineering.
Corrosion Resistance: Galvanized or coated steel coils provide enhanced corrosion resistance, protecting the underlying steel substrate from rust, oxidation, and environmental degradation. This corrosion resistance extends the lifespan of steel coils and makes them suitable for outdoor applications, marine environments, and structures exposed to moisture and chemicals.
Recyclability: Steel is one of the most recycled materials globally, with high recycling rates and minimal loss of quality during the recycling process. Steel coils are recyclable at the end of their service life, contributing to sustainability efforts and reducing environmental impact by conserving resources and minimizing landfill waste.
Consistency and Quality: Steel coils are manufactured to strict quality standards, ensuring consistent mechanical properties, dimensional accuracy, and surface quality across production batches. This consistency and quality control are essential for meeting performance requirements and regulatory standards in critical applications such as construction, infrastructure, and transportation.
Fire Resistance: Steel is inherently fire-resistant, offering superior fire protection compared to many other construction materials. Steel coils maintain their structural integrity and load-bearing capacity even at high temperatures, making them a preferred choice for fire-resistant building components and structural elements in commercial and residential construction.
Application of Steel Coil
Automotive Industry
Steel coils are widely used in the automotive industry for manufacturing car bodies, engine parts, and other components. Steel coils can withstand high pressure and temperature, making them ideal for use in engines and other automotive parts.
Construction Industry
Steel coils are a popular raw material used in the construction industry. They are used for manufacturing steel frames, beams, columns, and other structural components. Steel coils are also used for roofing, siding, and cladding.
Agriculture Industry
Steel coils manufacture various agricultural tools and equipment, including ploughs, cultivators, and tillers. Steel coils are durable and can withstand the harsh conditions of the agricultural field.
Packaging Industry
Steel coils are used to manufacture a range of packaging materials, including steel drums, cans, and containers. They are strong and durable, making them ideal for storing and transporting goods.
Electrical Industry
Steel coils are used in the electrical industry for manufacturing transformers, motors, and other electrical components. Steel coils are good conductors of electricity and can withstand high temperatures, making them ideal for electrical applications.
Aerospace Industry
Steel coils are used in the aerospace industry for manufacturing aircraft parts, including landing gears, wings, and fuselage components. Steel coils are lightweight and strong, making them ideal for aerospace applications.
Furniture Industry
Steel coils manufacture various types of furniture, including chairs, tables, and storage units. Steel coils can be easily formed into various shapes and sizes, making them ideal for furniture manufacturing.
Energy Industry
Steel coils are used in the energy industry for manufacturing pipelines, tanks, and other equipment used in the oil and gas industry. Steel coils are strong and durable, making them ideal for harsh environments.
Medical Industry
Steel coils are used in the medical industry for manufacturing surgical instruments, implants, and other medical devices. Steel coils are non-reactive to bodily fluids and can withstand sterilization, making them ideal for medical applications.
Shipbuilding Industry
Steel coils are used in the shipbuilding industry for manufacturing ship hulls, decks, and other components. Steel coils are strong and durable, making them ideal for use in marine environments.
Food Industry
Steel coils are used in the food industry for manufacturing various cooking equipment, including ovens, grills, and stoves. Steel coils are easy to clean and withstand high temperatures, making them ideal for food applications.
Types of Steel Coil
Hot-Rolled Steel Coil:
Process: Hot-rolled steel is produced by heating steel above its recrystallization temperature and then rolling it through a series of rollers.
Properties: Hot-rolled coils have a rough surface finish and are generally less precise in terms of dimensions. They are known for their strength and are suitable for structural applications.
Cold-Rolled Steel Coil:
Process: Cold-rolled steel is processed at room temperature, resulting in a smoother surface finish and improved dimensional accuracy.
Properties: Cold-rolled coils are known for their higher precision, smooth surface, and increased strength compared to hot-rolled coils. They are often used in applications where precise shapes and tolerances are critical.
Galvanized Steel Coil:
Coating: Galvanized steel coils are coated with a layer of zinc to provide corrosion resistance. The coating process is typically hot-dip galvanizing.
Properties: Galvanized coils are used in applications where corrosion resistance is crucial. They are common in roofing, construction, and automotive industries.
Galvalume Steel Coil:
Coating: Galvalume steel coils are coated with a combination of zinc and aluminum. This coating provides enhanced corrosion resistance compared to traditional galvanized coatings.
Properties: Galvalume coils are often used in roofing and siding applications where both corrosion resistance and heat reflectivity are important.
Pre-Painted or Color-Coated Steel Coil:
Coating: Pre-painted steel coils have a layer of paint or other protective coating applied before forming. The coating enhances aesthetics and provides additional corrosion protection.
Properties: These coils are available in a wide range of colors and are used in roofing, cladding, and other architectural applications.
Aluzinc Steel Coil:
Coating: Aluzinc steel coils, also known as Galvalume, are coated with a combination of aluminum and zinc to provide corrosion resistance.
Properties: Aluzinc steel is commonly used in roofing and construction, offering good corrosion resistance and heat reflectivity.
Stainless Steel Coil:
Material: Stainless steel coils are made from various grades of stainless steel, such as 304, 316, 430, etc.
Properties: Stainless steel coils are known for their corrosion resistance, heat resistance, and various mechanical properties. They are used in a wide range of applications, including kitchen appliances, automotive, and construction.
Electrogalvanized Steel Coil:
Coating: Electrogalvanized steel coils are coated with a thin layer of zinc through an electroplating process.
Properties: These coils are often used in applications where a thinner coating is sufficient for corrosion protection, such as in automotive components.
Raw Material Preparation
The process of making steel coils starts with raw materials, primarily iron ore, coal, and limestone. These materials are processed in a blast furnace, where iron ore is converted into molten iron.
Casting
Once the molten steel is refined, the next step is casting, where it is solidified into semi-finished forms known as slabs, blooms, or billets. For steel coil production, the steel is typically cast into wide slabs. These slabs are the foundation for creating steel sheets and coils.
Hot Rolling
After casting, the steel slabs are reheated to high temperatures (usually around 1100°C or 2012°F) and passed through a series of hot rolling mills. This process reduces the thickness of the steel slab and shapes it into long, thin sheets.
The hot-rolled steel is then cooled and coiled into large rolls, ready for further processing or shipment.
Cold Rolling
For applications requiring a smoother surface and tighter tolerances, the steel undergoes an additional process known as cold rolling. In this process, the hot-rolled steel coils are pickled in acid to remove surface oxides and then passed through cold rollers at room temperature. This process reduces the thickness even further and improves the steel’s surface finish.
Galvanizing (Optional)
This step is particularly important for steel coils used in outdoor or harsh environments, such as roofing, construction, and automotive parts.
In galvanizing, the steel coil is dipped into a bath of molten zinc, which bonds with the surface to form a protective layer. The resulting galvanized steel coils are highly resistant to rust and oxidation, making them an excellent choice for applications that require durability and longevity.
Coiling
Once the steel has undergone its final rolling and any optional processes like galvanizing, it is coiled into large rolls for easy handling, transportation, and storage. Steel coils are produced in various widths, thicknesses, and grades, depending on the intended application.
Quality Control and Inspection
Throughout the entire process, quality control is critical to ensuring that the steel meets industry standards and customer specifications. We perform a variety of tests, including tensile strength, thickness measurement, and surface inspection, to ensure the coils are defect-free and possess the required mechanical properties.
Packaging and Shipping
FAQ
As one of the leading steel coil manufacturers and suppliers in China, we warmly welcome you to buy high quality steel coil in stock here and get quotation from our factory. Contact us for more details.