Hot-rolled steel coil: Definition, Uses, Production Process, ...

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?

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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 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.

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

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.

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Hot-rolled coils (HRC) are a form of sheet product that resembles a wrapped steel strip and are manufactured in hot-rolling mills. These products are commonly used in construction, the machine industry, automobile manufacturing, the manufacture of general-purpose, construction, oil and gas, and special-purpose pipes, and as a work-piece for the subsequent manufacture of cold-rolled items.

Hot-rolled steel coils application

Hot-rolled coil is used to construct steel buildings, pipes, and closed sections, as well as to enclose structures and facade elements. In this industry, shaped and circular pipes are mostly utilized for:

• Steel structures and frames that support industrial and civil facilities
• Enclosures that protect various utility lines (wires and cables, plastic or other channels)
• Main pipelines, water lines, and heat supply networks, as well as bridges and trestles, are all supported.
• Sewer lines, flue ducts, and ventilation systems are all examples of infrastructure.
• Poles, guides, drainage elements, lighting columns, and crash barriers for road construction
• Steel structures for use in sports fields and playgrounds, as fences and partitions, and in other applications.

Minimum dimension tolerances, large coil weight, weldability, high strength and toughness, crack resistance (even at negative temperatures), and external resistance are the major requirements of this segment for this type of rolled product. In the building industry, cold-rolled steel products have recently been supplanted by less expensive, thin hot-rolled goods. High-strength rolled product kinds, on the other hand, are increasingly commonly employed to minimize product weight.

Hot-rolled steel coils for large diameter pipe manufacturing

Spiral seams are used to manufacture large-diameter pipes made of HRC steel. This method enables the manufacture of pipes with diameters of up to 2,520 mm for the following segments:

• Pipelines used to carry oil, gas, and other commodities.
• Process pipes, heat supply networks, water lines, and sewage lines are all examples of pipelines.
• Industrial facility supports, bridges and trestles, onshore and offshore platform elements.

Hot-rolled steel sheet must be in coils weighing up to 32 tonnes for these purposes, allowing for increased equipment capacity and production. HRC should have good weldability, high strength and toughness, and crack resistance (even at negative temperatures). Because of the rising abrasiveness of transported substances, demand for rolled steel with certified resistance to hydrogen sulphide media (HIC, SSC) is increasing. Higher process pressure inside pipelines necessitates the use of thicker-walled pipes constructed of high-strength steel grades such as X60-X100.

Hot-rolled steel coils for re-rolling

In order to produce cold-rolled steel products, a sizeable portion of the world&#;s HRC steel production is used as a feedstock. Narrow dimensional tolerance limits, plasticity, good surface quality, and the absence of rust and other exterior and internal flaws are important requirements for HRC.

Before cold rolling, rust and other impurities are removed from the surfaces of hot-rolled coils using acid pickling. Orders are placed for hot-rolled products that have already been pickled and/or oiled by cold-rolled coil companies who lack pickling lines or have limited usage for them.

Hot-rolled coils for the machine industry

The following sectors of the machine industry frequently use hot-rolled steel in coil form:

• Heavy engineering and machine tool engineering (machine tool bodies and parts, mining equipment, roads, and handling equipment)

• Automotive engineering (car and truck bodywork, freight wagon liner components, tanks, truck-mounted crane booms, etc.)

• to produce agricultural machinery bodies and its various elements, including ploughs, blades, harrows, and seeding equipment.

By using high-strength, low-alloy rolled steel more frequently (such as dual-phase steels, TMCP steel, etc.), machinery and equipment may lift (carry) more weight and operate more effectively.

Hot-rolled steel coils for service metal centres

Machine engineering companies, shipyards, wind farms, producers of boiler equipment, etc. are some examples of the service metal centers&#; final clients. Service metal centers use a large variety of steel product grades and sizes because to the diverse range of applications for steel products. For laser and plasma cutting at fully automated factories, the HRC should have incredibly exact size dimensions, consistent mechanical properties, and low internal tensions.

Hot-rolled steel coils classification

Numerous industries use hot-rolled steel coils, and each of these industries has unique standards for the end products&#; quality parameters. The following technical standards for HRC manufacture mostly apply:

European standards include DIN , EN , EN , EN , EN , , and .

Standards for the CIS and Ukraine include DSTU EN , DSTU /GOST , GOST , GOST , DSTU /GOST , GOST , and DSTU /GOST , GOST , and GOST .

American Petroleum Institute (API) standards, ASTM A36/A36M, A/AM, ASTM A568, and others are examples of US standards.

Production of hot-rolled coils

Hot-rolled coil (wide strip) products are produced by semi-continuous or continuous hot-rolling mills, which can also be a part of compact strip production plants.

Continuously cast or rolled slabs made of carbon, low-alloy and alloy steel grades are used as a semi-finished product to make steel coils. The HRC production process includes the following stages:

• In a reheating furnace, heat the slab prior to rolling (the heating temperature is adjusted based on the steel grade and the chosen production parameters).

• To remove scale from the feedstock&#;s surface, use a hydraulic descaler.

• Rolling in a coilbox unit&#;s roughing and finishing stands with or without intermediary rewinding of the semi-finished strip

• Observing the rolled strip&#;s cooling

• Placing the finished goods on downcoilers for winding

• Hot-rolled steel coils are finished, including by cutting, accepting, packaging, labeling, etc.

Buy hot-rolled steel coils from the manufacturer

Gunung Prisma manufactures hot-rolled coils with a thickness range of 1.2 to 25 mm in compliance with client requests and international standards. Both hot-rolled and specific in-line treatments (such as controlled rolling, thermomechanical rolling, and normalized rolling) are offered for the products. All of Europe, Asia, Africa, and North America can get HRC.

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