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What is a Bar?

Bars are 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.

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: -

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.