What is a steel bar?

Steel Bar is hot-rolled or cold-drawn rods that are suited for structural applications.

Steel Bar is hot-rolled or cold-drawn rods that are suited for structural applications. Stainless steel bars are commonly used for strength, corrosion resistance and toughness. Some bars are built to withstand high temperatures, as well. Bars are popular as they are easily fabricated, welded, stamped and welded. Steel bars can work in harsh environments like saltwater, chemically acidic environments, and extreme temperatures. Round bars can be made from Alloy Steel, Hastelloy, monel, Inconel, stainless steel, aluminium and brass.

34CrMo4 Structural Steel Bar
34CrMo4 Structural Steel Bar

Types of Bars

Bars come in various shapes and sizes, each with unique properties and applications. Larger structural pieces, such as sheet metal bars, are used more widely in the construction industry to create foundational elements of buildings. In addition, more robust varieties, such as heavy-duty bars, have greater tensile strength and can be used for sturdy building projects and infrastructure.

  • Round Bars: – Round Bars are commonly used for applications such as shafts, Axels, dowels, Bolts and gears.
  • Square Bars: – Square Bars are generally used for structural applications, manufacturing and repairs. Industries like agricultural implementation, fencing, and transportation also involve square bar usage.
  • Hex Bars: – Hex or Hexagonal bars are with six sides. These generally are cold drawn and can be altered as per application requirements.

Standards of steel bar

Bars are regulated under ASTM A108-13 Standard specifications to meet all quality requirements.


Bars have countless applications in various environments, from residential to industrial. Steel bars are typically used for permanent structural supports and are perfect for larger structures such as buildings and bridges. Another strong application for bars is providing reinforcements to concrete during construction, ensuring that buildings are safe and secure. Galvanized steel bars can also be used outdoors due to their corrosion resistance, making them an ideal choice for external structures. In addition, aluminium bars offer excellent conductivity to support wiring and electrical systems and are lightweight and highly malleable to suit many different needs. Ultimately, metal bars provide a durable option with flexibility across a wide range of uses – no matter the application, they can meet your needs perfectly.

FAQs of Bars

How to test steel bars?

Steel bars can be tested using various methods, including visual inspection, magnetic particle, ultrasonic, and radiographic testing. Visual inspection involves examining the bar’s surface for any signs of cracks, corrosion, or other defects. Magnetic particle testing uses magnetic fields to detect surface and near-surface flaws in the steel. Ultrasonic testing involves sending high-frequency sound waves through the steel to detect internal flaws or inconsistencies. Radiographic testing uses X-rays or gamma rays to produce images of the internal structure of the steel, which can reveal any defects that may be present.

How to make steel bars?

The process typically involves melting scrap metal in an electric arc furnace or basic oxygen furnace. The molten metal is poured into a continuous casting machine, solidifying it into long billets or blooms. These are then reheated and passed through rolling mills to gradually reduce their thickness and shape them into the desired size and profile. The final step involves cutting the bars to length and performing necessary finishing processes, such as straightening or heat treatment.

How many steel bars in one bundle?

The number of steel bars in one bundle can vary depending on the size and length of the bars and local industry standards. However, a standard bundle of steel bars typically contains 10 to 12 pieces, with some bundles containing up to 20 pieces. The weight of each bundle will also depend on the size and length of the bars but is usually around 2 to 3 metric tons.

How to calculate the weight of a steel bar?

To calculate the weight of a steel bar, you need to know its diameter and length. The formula for calculating the weight (in kilograms) is:

  • Weight = (Diameter^2/162) x Length
  • Where diameter is in millimetres and length is in meters.

How to calculate the weight of a round bar?

To calculate the weight of a round bar, you need to know its diameter and length. The formula for calculating the weight (in pounds) is:

  • Weight = Diameter^2 x Length / 4 x 3.402
  • Where diameter is in inches and length is in feet.

How to calculate the weight of a steel bar in kg?

To calculate the weight of a steel bar in kilograms, you need to know its diameter and length. The formula for calculating the weight is:

  • Weight (in kg) = Diameter squared (in mm) x Length (in meters) x 0.006165

When the iron bar is magnetised, its length?

When an iron bar is magnetised, its length remains the same. The magnetic field generated by the magnetisation process affects the alignment of the electrons within the iron atoms, causing them to align in a specific direction and creating a magnetic moment. This does not change the physical dimensions of the iron bar, so its length remains unchanged.

what are the steel bars applications and types

What are the Steel Bars Applications and Types?

Rebar is yet another name for steel bar. These steel bars are being used to reinforce and hold tension in reinforced concrete and masonry structures. Steel bars are a type of construction material used to build structures such as buildings, bridges, dams, RCC roads, and towers. It can be used in concrete to continue providing tensile strength because the tensile strength of concrete is significantly lower than the compressive strength. It will be strong enough to support the structure. To withstand the structural load, it is embedded in concrete fibre.

There are various applications and types of steel bars. Details will be given in this article. There are 5 types of steel bars used and they are as follows:

Prestressing Steel Bar

Prestressing Steel Bar Steel bars that are pre-stressed use the latest techniques than steel bars that are not pre-stressed. Steel bars are represented as strands in this model, which when deployed in a construction frame produce the Prestressing action. Prestressing steel bar strands are composed of several wires, with a typical strand containing anywhere from 2 to 7 wires. The tensile strength of these strands is between 250000 and 270000 psi, and they have a lot of flexibility.

Hot Rolled Deformed Bar

One of the most common types of reinforced steel bars used in R.C.C structures is hot-rolled deformed bars. These bars have a great specific strength and can be used for a range of purposes.

The holt rolling procedure is used to manufacture such steel bars results in the formation of ribs on the surface of the bras, which aid in the formation of a storing bond with the concrete. It is a feature that is only found in Hot Rolled Deformed Steel Bars, not the type we previously discussed.

Worked Steel Bar

Worked in Cold Steel bars are a form of reinforced steel that is created from hot-rolled bars that have been further processed. The hot-rolled bars are made to go through a cold-working process in this process. Allowing hot rolled steel bars to undergo cold working produces a reinforcement bar. During the cold working process, which itself is finished at room temperature, the bars will twist and draw, reducing the steel’s ductility.

Mild Steel Plain Bars

The above are among the most basic types of steel bars, and it has long been used in building construction. Mild Steel Plain Bars, as the name implies, have a plain outer layer (as opposed to the ribbed structure seen in other types of bars) and have lower tensile yield strength.

This sort of steel bar is frequently used for the construction of small structures that do not require a great deal of steel strength. Moreover, these bars are less expensive, making them the most cost-effective option.

TMT Steel

TMT steel is the most common type of steel bar used in modern building construction. TMT steel has many features and properties that other steel bars lack, including unrivaled tensile strength. TMT steel is corrosion-resistant, earthquake-resistant, lightweight, and simple to put together.

The TMT steel’s composition and manufacturing process make it the best available on the market today. TMT steel is also available in a variety of sub-virtues, each with its own set of characteristics and strengths, from which you can select the one that best meets your requirements.

Here are some of the applications of Steel Bar

Steel bar is well-known for its numerous applications. These bars are used in shipbuilding, defence, automotive, textile, paper and pulp, fabrication, cement, heavy earth moving equipment, and construction, to name a few industries.

Steel bars come in all sorts of shapes, including flat, round, hexagonal, and square, and the shape of the bar largely determines its application space. Steel bars are used in a variety of ways depending on the type of bar required. They also come in a variety of sizes.

Flat Bar

Hot rolled stainless steel flat bars have such a large thickness, high strength, and corrosion resistance. They’re used in places like lifts, escalators, and subway stations where the steel isn’t exposed to the elements. Stainless steel flat bars have a variety of applications and use. The vast majority of flat bars are used as base plates and brackets in the construction industry.

Round Bar

One of the most key players in the machining industry is the stainless steel round bar. Stainless steel round bars are used in manufacturing industries that produce fasteners and machinery because of their excellent corrosion resistance. Our Fitmach bars that are a highly specialized product are also used in the machining industry. These calcium-treated bars are of free-machining grades which mean they cut faster and last longer. These specialty round bars are widely used in the manufacture of various machine parts due to their precision straightened and mirror finish surfaces.

Hexagonal Bar

Hexagon bars can be used for a variety of purposes. Their final application is in the construction industry. They’re made to carry a lot of weight.

Square Bar

Square bars are treasured for their hardness, strength, and resistance to wear. These are generally used to produce medium to large-scale industrial equipment components. These are from one of the most popular categories that are widely used in the manufacturing industry.