Steel Round Bar - Manufacturer of High Tensile Round Bars, ST52-3 round bar, S355J2 round bar, E350C round bar, C45 round bar, EN8D round bar, 42CRMO4 round bar, 20MNCR5 round bar in India

Supplier of Round Bars available in Stainless Steel, Carbon Steel, Alloy Steel, Hastelloy, Monel, Inconel, Titanium, Super Duplex, Incoloy, Alloy 20, 254 SMO, Copper Nickel, High & Low Temperature Steel, Mild Steel At Best Price - 15 mm to 400 mm

Prime Steel stands as a premier manufacturer and supplier, specializing in the production and distribution of top-quality round bars. With a steadfast commitment to excellence. Utilizing state-of-the-art manufacturing processes and employing skilled professionals, We deliver products that cater to diverse industrial needs with utmost precision and efficiency. Whether it's for construction, engineering, or manufacturing applications, Our round bars embody strength and versatility, making them an indispensable choice for various projects. Trust in Prime Steel for unparalleled quality and service in the realm of round bar solutions.

Reasons For Steel Round Bar Buyers To Choose Prime Steel

  • Unrivaled Quality Assurance

  • Extensive Product Range

  • Exceptional Manufacturing Expertise

  • Customization Options

  • Reliable Supply Chain

  • Commitment to Customer Satisfaction

  • Competitive Pricing

Specifications of Round Bars

Standards 01

ASTM A36, ASTM A572, and SAE/AISI 1018, ASTM A322, ASTM A434, ASTM A193

Size range 02

1/8 inch (3.175 mm) to as large as 36 inches (914.4 mm)


Size Tolerance 03

h8, h9 (DIN 671), h10, h11,ASTM A484, DIN 1013


Form 04

Round, Square, Hex (A/F), Rectangle, Wire (Coil Form), Wire-mesh, Billet, Ingot, Forging Etc.

Diameter / Finish 05

25mm to 152 mm
Bright, Polish & Black


Materials 06

Stainless Steel, Duplex, Carbon Steel, Alloy Steel, Nickel Alloy, Copper Alloy, Nickel Alloy, Titanium

About Round Bar?

A round bar, also known as a rod or solid bar, is a long, cylindrical metal bar with a circular cross-section. It's commonly made from materials like steel, stainless steel, aluminum, brass, or other metals. Round bars are manufactured to various diameters and lengths, depending on the application they're intended for.

These bars are widely used in construction, manufacturing, engineering, and fabrication industries for a multitude of purposes. They can serve as structural components, shafts, axles, supports, and more. Their uniform shape and smooth surface make them versatile for machining, welding, and forming into various shapes as needed.

Round bars come in various grades and finishes, each suited to different requirements in terms of strength, corrosion resistance, machinability, and other properties. They can be hot-rolled, cold-rolled, or extruded, depending on the manufacturing process.

C45 round bar: C45 is a medium carbon steel grade with good tensile strength and wear resistance. It is commonly used in machinery parts, automotive components, and general engineering applications.

EN8D round bar: EN8D is a variant of EN8 steel, which is a medium carbon steel grade known for its excellent machinability and weldability. It finds usage in gears, shafts, and high-stress components.

EN9 round bar: EN9 is a high carbon steel grade with good mechanical properties and heat treatability. It is utilized in manufacturing large gears, axles, and crankshafts.

4140 alloy round bar: 4140 is a versatile chromium-molybdenum alloy steel known for its high tensile strength, toughness, and abrasion resistance. It is extensively used in machinery parts, automotive applications, and oil and gas industry components.

EN19 round bar: EN19, also known as 42CrMo4, is a high-grade alloy steel with excellent fatigue resistance and impact strength. It is widely used in the manufacture of heavy-duty shafts, gears, and axles.

42CrMo4 round bar: This grade is a chromium-molybdenum alloy steel known for its high hardenability and toughness. It is employed in components subjected to high mechanical stress and wear.

20MNCR5 round bar: 20MNCR5 is a low alloyed case-hardening steel with good wear resistance and core strength. It is commonly used in gears, camshafts, and other automotive components.

ST52-3 round bar: ST52-3 is a structural steel grade known for its high tensile strength and good weldability. It is commonly used in civil engineering and construction applications.

S355 round bar: S355 is a high-strength structural steel grade offering excellent weldability and impact resistance. It is utilized in structural and mechanical applications.

S355J2 round bar: S355J2 is a variant of S355 with enhanced impact properties and is suitable for critical structural components in various industries.

E350C round bar: E350C is an Indian standard high tensile steel grade, offering good machinability and weldability. It is often used in construction and manufacturing applications.

  1. Hot Rolling: Hot rolling is a widely used method to produce round bars from various metals, especially steel. The process involves the following steps:

  2. Melting the Metal: The raw material, typically in the form of billets or ingots, is heated in a furnace until it reaches a malleable temperature suitable for rolling.

    Rolling Mill: The heated metal is then passed through a series of rolling mills, which consist of two or more cylindrical rollers rotating in opposite directions. These rollers exert pressure on the metal, causing it to undergo plastic deformation and progressively reduce its cross-sectional area.

    Shaping the Round Bar: As the metal passes through the rolling mill, it is shaped into a long, cylindrical form with a round cross-section. The diameter of the round bar is controlled by the size of the final set of rollers.

    Finishing: After the initial shaping, the round bar may undergo additional processes, such as straightening, cutting to length, and surface treatments, to meet specific requirements.

  3. Cold Drawing: Cold drawing is typically used for materials that are harder to shape through hot rolling or when precise dimensions and surface finish are critical. The process involves the following steps:

  4. Preparing the Material: The starting material, often in the form of hot-rolled round bars, is first pickled and cleaned to remove any surface impurities.

    Drawing Process: The prepared round bars are then pulled through a series of precision dies at room temperature. The dies reduce the diameter of the bar and simultaneously improve its surface finish. This process is repeated through multiple dies to achieve the desired dimensions.

    Annealing (optional): In some cases, cold-drawn round bars may undergo annealing, where they are heated and then slowly cooled to improve their ductility and remove residual stresses.

    Final Finishing: The cold-drawn round bars are further processed to achieve the required tolerances, straightness, and surface quality. They may also be cut to specific lengths and undergo surface treatments, if needed.

Products Diametre Length
C45 round bar 95-350 DIA 4000-6500 METERS
EN8D round bar 95-350 DIA 4000-6500 METERS
EN9 round bar 95-350 DIA 4000-6500 METERS
4140 alloy round bar 95-350 DIA 4000-6500 METERS
EN19 round bar 95-350 DIA 4000-6500 METERS
42CRMO4 round bar 95-350 DIA 4000-6500 METERS
20MNCR5 round bar 95-350 DIA 4000-6500 METERS
ST52-3 round bar 95-350 DIA 4000-6500 METERS
s355 round bar 95-350 DIA 4000-6500 METERS
S355J2 round bar 95-350 DIA 4000-6500 METERS
E350C round bar 95-350 DIA 4000-6500 METERS
  • Machinability: Machinability refers to the ease with which a round bar can be machined or cut into different shapes. Round bars with good machinability allow for efficient and precise manufacturing processes.
  • Strength: The strength of a round bar refers to its ability to withstand external forces and loads without undergoing deformation or failure. Different types of round bars, such as carbon steel, alloy steel, and high tensile steel, offer varying levels of strength to meet specific application requirements.
  • Corrosion Resistance: For materials used in corrosive environments, such as stainless steel and certain alloy steels, corrosion resistance is a vital property to prevent degradation and maintain structural integrity.
  • Toughness: Toughness is the ability of a round bar to absorb energy without fracturing. It is crucial in applications where the material is subjected to impact or sudden load changes.
  • Hardness: Hardness is a measure of a round bar’s resistance to indentation or abrasion. It affects the wear resistance of the material and its ability to withstand surface damage.
  • Weldability: Weldability is the capacity of a round bar to be welded without resulting in defects or weakening of the joint. Some materials may require preheating or post-weld heat treatment to improve their weldability.
  • Ductility: Ductility is the ability of a round bar to undergo plastic deformation without breaking. Ductile materials can be easily formed into various shapes and are less prone to brittle fracture.
  • Electrical Conductivity: Some round bars, particularly those made from copper or aluminum, exhibit high electrical conductivity and are used in electrical applications.
  • Heat Resistance: Materials used in high-temperature applications should possess good heat resistance to maintain their structural integrity and mechanical properties under elevated temperatures.
  • Magnetic Properties: Certain round bars may exhibit magnetic properties, making them suitable for electromagnetic applications or magnetic assemblies.
Round bars can be made from various materials including steel, stainless steel, aluminum, brass, copper, and others. The choice of material depends on the intended application and required properties such as strength, corrosion resistance, and conductivity.
Round bars come in various standard sizes, typically ranging from 1/8 inch to several inches in diameter. However, custom sizes can also be manufactured to meet specific requirements.
Round bars offer several advantages including high strength, excellent machinability, good weldability, and uniformity in dimensions. Their cylindrical shape also provides efficient load distribution and resistance to bending.
Round bars have a circular cross-section, whereas other types of bars such as square bars, flat bars, and hexagonal bars have different cross-sectional shapes. Each type of bar offers unique properties and is suitable for specific applications.

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