Round Bars Manufacturers in India
Unifit Fastener is a leading brand in the circle of the top round bar manufacturers in India that provides high-quality solutions for various industrial usages. Our entire line of round bars is designed to provide a high level of strength, durability and corrosion resistance and is used in the construction, automotive, oil and gas and marine sectors as well as engineering. Consistent in performance and dimensional precision, we are reliable round bar suppliers offering customised specifications, grades, and round bar sizes in different sizes and dimensions to fulfil the different requirements of the project.
Our wide material portfolio consists of stainless steel round bars, nickel alloy round bars, duplex steel round bars, super duplex round bars, cupro-nickel round bars, alloy steel round bars, titanium round bars and speciality grades such as 4140 round bars. The bars have been made with high-quality raw materials and high technology to make them highly machinable and strong in tensile strength. We also aim to provide competitive prices for round bars without affecting the quality at Unifit Fastener to enable our clients to procure them when it is cost-effective.
Our round bars are available in various finishes and tolerances to suit machining, forging, and structural needs. Unifit Fastener has become a valued customer with a firm belief in its precision, timely delivery, and customer satisfaction and is considered an ideal partner to the industries that need reliable round bar solutions. You can count on our team to ensure high quality of products, technical assistance and smooth service delivery to your projects, whether in bulk supply or requirements of specific grades.
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What are Round bars?
Round bars consist of uniform-diameter rods of metal in solid form, which are cylindrical in shape with a uniform diameter throughout the length. They have found wide application in construction and manufacturing businesses because they are very strong, durable and easy to machine. Common products are scaffolding, reinforcement, shafts, fasteners and precision products, including gears. Round bars are available in various materials, including carbon steel, stainless steel, alloy steel, and aluminium, which have excellent tensile strength and versatility. This is why they are essential in engineering work and the development of the most important structural and machine parts.
Round Bar Materials
Nickel Alloy Round Bar
Monel Round Bar
Inconel Round Bar
Hastelloy Round Bar
Cupro-Nickel Round Bar
Alloy Steel Round Bars
Titanium Round Bar
Specification of Round Bar
| Category / Standard | Available Grades |
|---|---|
| EN Series Steels | EN9, EN14A, EN15, EN16, EN18, EN19, EN24, EN25, EN26, EN30, EN31, EN36C, EN39, EN40, EN41B, EN42, EN47, EN100, EN351, EN353, EN354, EN355 |
| Carbon & Alloy Steel Grades | C22E, C25E, C30, C35E, C45, C50, C55, C60, CK45, S45C, S235J2, S275J2, S355J2, ST52.3, 35B2, 28Mn6, 46Cr2, 34Cr4, 41Cr4, 20Mn5, 42CrMo4, 50CrMo4, 30CrNiMo8, 34CrNiMo6, 36CrNiMo4, 36NiCrMo16, 51CrV4, 27MnCrB5, 32CrB4, 25CrMo4, 20MnCr5, 16MnCr5, 16MnCrS5, 17CrNiMo6, 18CrNiMo7, 20MnB4, 23MnB4, 23MnB3, 34CrMo4V |
| Stainless Steel Grades (SS) | SS 410, SS 416, SS 420, SS 431 |
| SAE Steel Grades | SAE 1010, 1025, 1030, 1035, 1040, 1117, 1541H, 4130, 4135, 4140, 4145, 4145H, 4330, 4340, 4820, 5160, 8620, 8630, 8640, 52100, 9310 |
| AISI Steel Grades | AISI 1010, 1025, 1030, 1035, 1040, 1117, 1541H, 4130, 4135, 4140, 4145, 4145H, 4330, 4340, 4820, 5160, 8620, 8630, 8640, 9310 |
| BS 970 Specifications | 080A15, 080M15, 070M20, 080A30, 080M30, 080M40, 080A42, 080A47, 080M50, 070M55, 150M19, 150M36, 045A10, 045M10, 210M15, 635M15, 637M17, 655M13, 665M17, 805M17, 805M20, 815M17, 820M17, 822M17, 835M15, 530M40, 605M36, 606M36, 708M40, 709M40, 722M24, 817M40, 826M31, 826M40, 945M38, 410S21, 416S21, 416S29, 420S29, 420S37, 431S29 |
| DIN Tool Steel Standards | 1.2714 / DB6, 1.2343 / AISI H11, 1.2344 / AISI H13 |
| GOST (Russian) Standards | 33XC, 38XC, 40XC, 45XH, 30XH3A, 12X2H4A, 20X2H4A, 20X2H4MA, 18X2H4MA, 30XGCA, 40ХН2МА, 40Х2Н2MA, 30ХН2МА |
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Types of Round Bars
254 SMO Round Bars
440 Series Round Bar
Angle Bar
Beams
Black Bars
Channel Bar
Cold Drawn Hexagon Bar
Cold Drawn Round Bar
Cold Drawn Square Bar
Drawn Flat Bar
Equilateral Angle Bar
Forged Bar
Hex Bar
High Speed Steel Round Bars
Hot Rolled Bar
Hot Rolled Channel Bar
Hot Rolled Flat Bar
Hot Rolled Hexagon Bar
Incoloy Round Bar
Polish Bar
Rods
Shaped Bar
Square Bar
Tee Bar
Tool Steel Round Bars
Stainless Steel Round Bars
Stainless Steel Round Bars are preferred for their corrosion resistance, strength, and clean surface finish. Unifit Fastener manufactures and supplies stainless steel round bars in a wide range of grades including Stainless Steel 15-5PH Round Bars, 17-4PH Round Bars, 303 Round Bars, 304/304L Round Bars, 309/309S Round Bar, 310/310S Round Bars, 316/316L Round Bars, 317/317L Round Bars, 321 Round Bar, 347 Round Bar, 410 Round Bars, 420 Round Bars, 430/431 Round Bar, 440C/440B Round Bars, and 904L Round Bars. These bars offer excellent weldability, formability, and high tensile strength, making them suitable for construction, marine, food processing, and chemical industries. We supply stainless steel round bars in hot rolled, cold drawn, and centreless ground conditions to match different machining and structural applications while ensuring accuracy and consistent quality.
Nickel Alloy Round Bar
Nickel Alloy Round Bars are ideal for applications exposed to high temperatures and aggressive chemical environments. We manufacture Nickel 200/201 round bars with exceptional resistance to caustic alkalies and reducing media. These bars maintain mechanical strength even at elevated temperatures and are commonly used in petrochemical processing, battery production, synthetic fiber manufacturing and heat exchangers. Their low gas content and excellent thermal conductivity make them reliable in demanding operating conditions.
Monel Round Bar
Monel Round Bars offered by Unifit Fastener are available mainly in Monel 400 and Monel K500 grades. These nickel-copper alloy bars deliver superior resistance to seawater corrosion, acids and alkalis, making them suitable for marine engineering, pumps, shafts and seawater valves. Monel 400 provides outstanding toughness across a wide temperature range, while Monel K500 offers precipitation-hardened strength for high-load applications. Their anti-biofouling characteristics make them a preferred choice in shipbuilding and offshore equipment.
Inconel Round Bar
Inconel Round Bars are nickel-chromium superalloys designed to withstand extreme heat and oxidation. We supply Inconel 600, 601, 625, 718 and X-750 round bars for furnaces, gas turbines, heat treatment equipment and aerospace components. These alloys retain high strength at elevated temperatures where conventional steels fail. Inconel round bars also resist carburization and chloride-induced stress corrosion cracking, making them dependable for high-temperature and high-pressure services.
Incoloy Round Bar
Incoloy Round Bars combine nickel, iron and chromium to resist carburization and oxidation in high-temperature environments. We provide Incoloy 800, 800H, 800HT and 825 round bars widely used in heat exchangers, chemical processing, power plants and oil & gas applications. These bars offer excellent strength at elevated temperatures along with resistance to sulfuric and phosphoric acids. Incoloy round bars are particularly suitable for equipment exposed to reducing and oxidizing conditions simultaneously.
Hastelloy Round Bar
Hastelloy Round Bars are engineered for the harshest chemical environments. Grades such as Hastelloy C22, C276 and B2 provide exceptional resistance to strong acids including hydrochloric and sulfuric acids. These bars are commonly used in reactors, scrubbers, pharmaceutical plants, waste treatment and flue gas desulfurization systems. Their superior resistance to pitting, crevice corrosion and stress corrosion cracking ensures long service life under severe operating conditions.
Duplex Steel Round Bars
Duplex Steel Round Bars consist of a dual phase microstructure of ferrite and austenite, providing high strength and improved resistance to stress corrosion cracking. Unifit Fastener supplies Duplex UNS S31803 / S32205 Round bars widely used in chemical processing, desalination, structural applications and offshore platforms. These bars deliver double the strength of conventional stainless steels, along with excellent resistance to chloride-induced corrosion, making them ideal for marine and brine environments.
Super Duplex Round Bars
Super Duplex Round Bars offer superior mechanical strength and excellent pitting resistance compared to standard duplex grades. Manufactured in grades such as UNS S32750, S32760 Round bars, these bars are suited for subsea equipment, heat exchangers, pressure vessels and high-salinity environments. Their high chromium, molybdenum and nitrogen content ensures durability under severe corrosive conditions. Super Duplex round bars are preferred in oil & gas and marine industries where extended service life is critical.
Cupro-Nickel Round Bar
Cupro-Nickel Round Bars are produced in 90/10 and 70/30 grades and are known for excellent resistance to seawater corrosion and biofouling. These round bars are extensively used in marine hardware, condenser tubes, shipbuilding, desalination and offshore cooling systems. The presence of iron and manganese enhances resistance against erosion and high-velocity seawater. Their inherent antimicrobial properties also make them suitable for hygiene-critical applications.
Alloy Steel Round Bars
Alloy Steel Round Bars are designed for applications that demand high strength, wear resistance, and thermal stability. Unifit Fastener supplies heat-treated alloy steel round bars in grades such as AISI 4140, 4340, ASTM A182, and premium high-temperature grades including ASTM A182 F5, F9, F11, F12, F22, and F91 Alloy Steel Round Bars. These bars are widely used in heavy engineering, oilfield equipment, automotive components, and power generation industries. Our alloy steel round bars offer excellent fatigue resistance, toughness, and dimensional stability under high-temperature and high-pressure operating conditions. They are ideal for manufacturing shafts, gears, forged components, and critical mechanical parts, ensuring long service life and reliable performance in demanding environments.
Titanium Round Bar
Titanium Round Bars are valued for their exceptional strength-to-weight ratio and outstanding corrosion resistance. Unifit Fastener supplies Titanium Grade 2 and Grade 5 (Ti-6Al-4V) round bars used in aerospace, marine, medical implants and high-performance engineering applications. Titanium resists attack from chlorides, seawater and many industrial chemicals, making it ideal for desalination plants and chemical processing equipment. Its biocompatibility also supports medical and surgical uses.
Applications and End Uses
Our steel and alloy round bars serve a broad spectrum of industries across the globe, thanks to their superior strength, reliability, and performance in demanding environments. They find extensive usage in sectors such as:
- Aerospace components and structural parts
- Oil & Gas exploration and processing equipment
- Power generation including wind, thermal, and nuclear projects
- Mining and mineral processing machinery
- General and heavy engineering products
- Industrial fasteners and hardware
- Railway components and infrastructure
- Defence and military-grade applications
- Precision load cells and measuring devices
- Tooling and die manufacturing
- Shafts, gear blanks, and transmission parts
- Operations involving high-temperature and high-pressure conditions
People Also Ask About Round Bars suppliers
What is a round bar?
A round bar is a long, solid cylindrical metal bar with a uniform diameter throughout its length. It is commonly used in construction, engineering, automotive, machining, and manufacturing for producing components such as shafts, fasteners, tools, and structural parts due to its strength, durability, and ease of machinability.
What material is used for round bars?
Round bars are manufactured in a wide range of materials based on application requirements. Common materials include stainless steel, carbon steel, alloy steel, tool steel, mild steel, aluminium, copper, brass, titanium, duplex and super duplex stainless steels, and nickel alloys. Material selection depends on factors such as corrosion resistance, tensile strength, temperature resistance, and machinability.
What is an EN8 round bar?
EN8 round bar is a medium-carbon steel round bar known for its good tensile strength and wear resistance. It is widely used in general engineering applications such as shafts, axles, studs, keys, automotive parts, and other stressed components. EN8 can be heat-treated to improve hardness and mechanical properties, making it suitable for high-strength applications.
How to calculate round bar weight in kg?
The weight of a round bar can be calculated using its diameter, length, and material density.
Formula:
Weight (kg) = (π / 4) × d² × L × ρ
Where:
d = diameter of the bar (in meters)
L = length of the bar (in meters)
ρ = density of the material (kg/m³)
For steel round bars, a commonly used practical formula is:
Weight (kg) = 0.006165 × d² × L
(where d is in millimeters and L is in millimeters)