If you’ve delved into the steel manufacturing process used in constructing buildings, manufacturing vehicles, and various products we use daily, the concept of hot-rolled steel coil might already be familiar. However, to gain a deeper understanding, let’s pose the question: What is a hot-rolled steel coil, and why does it play a crucial role in modern steel production?

Contact us to discuss your requirements of coil production industry. Our experienced sales team can help you identify the options that best suit your needs.

Let’s explore further the fundamental knowledge about hot-rolled steel coils and the benefits they bring to businesses in various fields through the content below.

What is a hot-rolled steel coil?

Hot-rolled steel coil is a type of steel produced through a high-temperature rolling process, often exceeding 1000 degrees Celsius. During this process, the steel billet can change properties, size, and shape to create steel products according to specific requirements.

Hot-rolled steel coils often feature a characteristic blackish-blue surface with an oily sheen. The thickness of these coils usually ranges from 1mm and above. The edges of hot-rolled steel coils are processed to remove sharpness, providing a neat appearance.

Hot-rolled coils are used to produce HRC steel. The hot-rolling process involves heating the steel at high temperatures and then passing it through rollers to achieve the desired shape and thickness.

HRC comes in various types, including commercial quality (CQ), structural quality (SQ), and drawing quality (DQ). The most common type is CQ, typically used for general-purpose applications such as pipes, tubing, and automotive parts. Grades SQ and DQ are often used for manufacturing applications like beams, plates, and other structures requiring higher strength.

There are several benefits to using HRC over other steel products. HRC has higher yield strength compared to other steel types, making it ideal for high-stress applications. It also exhibits excellent abrasion resistance, making it suitable for environments with high abrasion. Additionally, HRC possesses good welding and shaping properties, making it easy to fabricate into parts and components.

Types of hot-rolled steel coils

There are three main types of hot-rolled steel coils:

• Hot-rolled steel coil: This is the standard hot-rolled steel widely used across various industries, including construction, automotive, mechanical, and many other applications.
• Hot-rolled stainless steel coil: This type of steel has high corrosion resistance. It’s suitable for applications demanding high sustainability in chemical or wet environments.
• Hot-rolled alloy steel coil: This type combines hot-rolled steel with other alloying materials like nickel, chromium, manganese, and molybdenum. This line of steel has specific mechanical properties and is often used in projects requiring durability and robustness.

Uses of hot-rolled steel coils

Hot-rolled steel coils find extensive use in the construction and manufacturing industries. It serves as a basic raw material used to produce various products, including steel pipes, wires, and sheets.

Hot-rolled steel coils are produced from the basic oxygen furnace (BOF) steelmaking process or from blast furnaces and direct reduced iron (DRI) routes. The advantages of hot-rolled coils include low cost, wide availability, and consistent quality. Additionally, hot-rolled steel coils have good welding and shaping capabilities.

Choosing the appropriate hot-rolled steel coil

Hot-rolled steel coils are commonly used in construction and manufacturing. The primary difference between hot-rolled and cold-rolled coils lies in the fact that hot-rolled coils are manufactured at higher temperatures, making them easier to work with. Hot-rolled coils also tolerate higher imperfections and are less prone to warping or cracking during fabrication.

When choosing a hot-rolled coil for your project, it’s essential to consider the material you’ll use it for. Hot-rolled steel coils come in various grades, each with different characteristics and applications. For instance, lower grades like commercial quality or drawing quality might be more suitable for projects not requiring high strength or durability, such as light metal sheet fabrication. Higher grades like structural quality or pressure vessel quality are often used in heavier applications like welding or structural construction.

It’s crucial to also consider the size and shape of the hot-rolled steel coil you need for your project. Hot-rolled coils come in different widths and thicknesses, so choosing the right type is essential for the current task.

For example, thinner coils might be more suitable for applications requiring high precision, such as in the automotive industry. Heavier coils might be more suitable for projects where strength and durability are crucial, such as in construction projects.

Lastly, you should also consider the cost of hot-rolled steel coils when making a decision. Hot-rolled steel coils generally have lower costs compared to cold-rolled coils. They are versatile and cost-effective steel products that can be used in multiple applications. The hot-rolling process offers many benefits, including increased strength, improved ductility, and reduced cracking.

Understanding the basics and benefits of hot-rolled coils will help you make informed decisions about which type of steel to use for your next project. With its numerous advantages, hot-rolled steel coils are an excellent choice for any application requiring reliable results at an affordable price.

Latest prices of hot-rolled steel coils

Similar to the prices of other materials in the steel industry, manufacturers set hot-rolled steel coil prices based on various factors. Hot-rolled steel coils are manufactured under strict quality control using advanced techniques and equipment. The price of hot-rolled steel coils varies significantly based on width, thickness, weight, steel type, and intended use. According to market surveys in Vietnam, the price range for hot-rolled steel coils fluctuates between 11,500 VND to 12,000 VND per kilogram.

Keeping updated with market information is crucial for business operations. These details also influence the prices of hot-rolled steel coils. Several online charts display today’s HRC prices, so it’s important not to confuse hot-rolled coils with cold-rolled coils, which are essentially made from hot-rolled coils.

To acquire quality hot-rolled steel coil products at a suitable cost, you can reach out to Stavian Industrial Metal Joint Stock Company. They are a modern integrated manufacturing enterprise, combining hot-rolled steel coil production, stainless steel coil, stainless steel sheet, stainless steel pipes, cold-rolled steel, galvanized steel, Galvalume steel, and color-coated steel, sales, and after-sales services. Stavian has the capability to provide comprehensive steel solutions with supply and services.

Want more information on hot rolled steel with tight thickness tolerance? Feel free to contact us.

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Steel Coil Basics & How to Buy

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Steel coils are vital in numerous industries, serving as an important piece of construction, manufacturing, and infrastructure development. Whether you’re new to an industry or simply seeking to enhance your knowledge, this article will serve as a practical guide, providing essential information on what steel coils are, their applications, the processing involved, and more.

What are steel coils?

Unlike steel sheets which remain flat, steel coils are continuous sheets of steel that are wound into a roll-like cylindrical shape. The manufacturing process for steel coils involves two primary methods: hot rolling and cold rolling. Hot rolled coils are produced by heating the steel above its recrystallization temperature, resulting in a rougher surface and a larger range of dimensional sizes. On the other hand, cold rolled coils are processed at room temperature, providing a smoother surface finish and more precise dimensional tolerances.

What are they used for?

Steel coils have a wide range of applications across various industries due to their strength, versatility, and formability. They are often used for common applications such as:

• Manufacturing of automotive components

  like frames, chassis, and body parts

• Construction materials

  , including roofing, wall cladding, structural beams, and pipes

• Production of appliances such as refrigerators, ovens, and washing machines

• Fabrication of storage tanks

  , containers, and shipping vessels

• Production of consumer goods like furniture, shelving, and hardware

How is coil steel processed?

Coil steel processing is a multi-step operation. After the initial rolling process, the coil can be cut into narrow strips, known as coil slitting, to meet different application requirements. The coil then undergoes various finishing services, such as galvanizing, which coats the steel in a protective layer of zinc to prevent corrosion. Other finishes, like paint or plastic coating, can also be applied to enhance the coil’s appearance or performance.

How are the coils transported?

Given their significant weight and size, steel coils require special attention during transportation. They are generally moved using cranes and forklifts within the factory or warehouse it’s manufactured in. For longer distances, they may be loaded onto a steel coil flatbed truck, train, or even ship. Due to their cylindrical shape, appropriate restraints are necessary to tie down and prevent the coils from rolling during transportation.

Steel coil measurements

The size of a steel coil is typically expressed through three main measurements; width, thickness, and length.

• Width

  –

  refers to the measurement from one edge to the other across its flattened surface. This is a vital measurement, as it determines the maximum distance between the edges of the sheet (or if the coil needs to be slit).

• Thickness

  – indicates the depth of each “layer” of the steel coil, or the thickness of the sheet once unrolled. Can be measured in

  gauges

  or inches.

• Length

  – the full length of the steel coil when completely unrolled. This is important to determine how many coils a project may need, or as an indicator of a coil’s weight.

Other measurements you might see include:

• Outside Diameter (OD)

  – refers to the measurement across the outer edges of the coil. It plays a crucial role in determining how the coil fits within specific machinery or storage facilities and affects transportation logistics due to its size and weight.

• Inside Diameter (ID)

  – indicates the measurement across the inner core of the coil. This measurement is important for compatibility with machinery and equipment that require a specific inner diameter for efficient operation. Additionally, it influences the stability and handling of the coil during transportation and storage.

Steel coil weight

The weight of a steel coil is a critical factor to consider when purchasing. It affects not only the cost but also the transportation requirements. The weight is typically measured in pounds per square foot of steel or total tons and can be calculated by multiplying the coil’s length, width, and thickness and then multiplying by the density of the steel grade you’re choosing. It’s important to remember that each steel coil is unique, and its measurements and weight can vary based on its intended application and the processing techniques used. This is why understanding these basics is critical when purchasing steel coils.

Get full or slit steel coils today

Steel coils provide the raw material needed for a wide array of products and infrastructure projects. Understanding the basics of steel coils, including their applications, how they’re processed, and their sizing system, can help empower buyers to make informed decisions while procuring these essential materials.

If you’re ready to buy full or slit steel coils for your next project, turn to the experts at Service Steel Warehouse. With our extensive knowledge and large inventory, we not only understand the importance of quality, reliability, and timely delivery, but also have the products you need to get the job done.

Call our team for immediate service or request a quote today!

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