Round Bar

Sino Special Metal Co., Ltd: You Professional Round Bar Manufacturer!

Our company is a leading manufacturer of specialty steel products, serving industries such as automotive, water and wastewater treatment, petrochemical, oil and gas, and construction. Our product line includes pipes/tubes, flanges, plates, bars, and fittings.

Why choose us?

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Wide range of applications

Our wide range of products is used in a variety of industries including renewable energy, wind power plants, oil and gas industry, onshore, offshore and refineries more.

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Quality Assurance

Our products are manufactured using the finest materials and undergo rigorous quality control measures to ensure they meet the highest quality standards.

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Wide Range of Material Options

We specialize in the production of a diverse array of products using premium material grades such as Hastelloy, Inconel, Incoloy, Monel, Duplex, Stainless Steel, Alloy Steel, Carbon Steel, Titanium and many more.

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Professional Technical Team
Our company has a team of highly skilled and dedicated professionals committed to providing fast and reliable service at an affordable price.

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Types Of Round Bar

Stainless steel round bars

Stainless steel round bars are celebrated for their exceptional corrosion resistance and ability to resist contamination. They are employed in environments where hygiene and durability are critical, such as in the food industry, pharmaceuticals, and marine applications.

Carbon steel round bars

Carbon steel round bars are renowned for their strength and hardness. They are extensively used in the construction and manufacturing sectors for creating structures that require high load-bearing capabilities, such as buildings, bridges, and heavy machinery.

Alloy steel round bars

Alloy steel round bars have enhanced mechanical properties due to the addition of alloy elements. They are very suitable for applications demanding higher strength and toughness, including aerospace, high-performance tools, and heavy-duty machinery.

Aluminum round bars

Aluminum round bars are lightweight and provide excellent corrosion resistance. They are commonly used in the aerospace, automotive, and marine industries where weight savings and resistance to corrosion are paramount.

Brass round bars

Brass round bars offer good corrosion resistance and superior machinability. They are often used in plumbing and electrical applications, where their ability to conduct and resist corrosion makes them ideal for fixtures, fittings, and electrical components.

Round Bar Grades Table

GRADE	DESCRIPTION	APPLICATION
4120	Has good tough strength properties	Used for forging applications as forged valve bodies and pumps
4125	A chromium-molybdenum alloy steel, displays good strength and toughness properties	Automotive and engineering gear, engine construction – steering knuckles, forged crankshafts, etc.
4130	Readily machineable, weldable and ductile, has tough strength	Commercial and military aircraft, machine tools, automotive, hydraulic tools, aerospace, auto racing
4135	Low-alloy steel, capable of being heat treated and has reasonable toughness	Forged shafts, fixtures, collars, jigs, spindles
4140	Provides good hardness penetration, wear resistant, tough and ductile	Highly stressed parts, or components subjected to severe wear
4142	Medium-carbon steel, readily heated and has tough strength	Die holders, forged gears, collets, spindles, arbors, flanges, axles, clutch parts, etc.
4145	A chromium-molybdenum low alloy steel, readily forged, welded, and machined	Drill collars, shafts, forged gears, rolls for paper mills, tool holders, and pump shafts
4150	Low-alloy steel, has good atmospheric corrosion resistance and strength	Forgings in the aerospace, gas, and oil industries, forged gears, shafts, and spindles
4340	Nickel-chromium molybdenum alloy, has high toughness and fatigue strength	Commercial and military aircraft, machine tool applications, automotive systems, forged steel crankshafts
52100	High carbon, chromium alloy steel	For highly stressed parts like aircraft bearing
6150	Fine grained carbon-chromium alloy steel, highly abrasion resistant	Gear and engine construction, forged crankshafts, connecting rods, pump and gear shafts, spindles and steering knuckles
8620	Most widely used carburizing alloy, has high core strength	Forged camshafts, gears, and fasteners
8740	Nickel-chromium low alloy steel, has tough strength properties	High-strength forged fasteners
9310	Low alloy steel, has good hardenability and fatigue strength	Crankshafts, heavy-duty gear shafts, gears in truck and aircraft construction

Surface Treatment of Round Bar

Plating:

A thin layer of zinc, chromium, cadmium, or nickel is added to improve the luster of the bar. Zinc plating can also create a corrosion-resistant layer.

Brushing and cleaning:

Can eliminate surface defects and imperfections.

Metal polishing:

Can produce different types of surfaces to improve appearance and functionality.

Quenching and tempering (QT):

A two-stage heat treatment process that produces high-strength, ductile bars with a fine-grained microstructure.

Shot blasting or pickling:

A surface treatment for raw steel bars.

Chemical surface treatments:

Can be used to achieve peak performance with stainless steels. However, these treatments often contain strong acids and should be neutralized before disposal.

Round Bar Inspection and Testing

01.

Ultrasonic testing

One of the main testing methods for alloy rolled steel round bar is ultrasonic testing. This non-destructive method uses high-frequency sound waves to detect internal and surface defects in round steel. It is particularly effective at identifying cracks, inclusions and voids that could compromise the integrity of the material.Ultrasonic testing is widely used in industry due to its accuracy and ability to provide real-time results.

02.

Magnetic particle testing

Another common inspection method is magnetic particle inspection. This technology is particularly suitable for ferromagnetic materials such as cast iron round bars and rolled steel round bars. By applying a magnetic field to the round rod and then sprinkling it with magnetic particles, any surface or near-surface defects can be easily identified. This method is fast, cost-effective, and can be performed on-site, making it a popular choice for quality control.

Application of Round Bar

Construction and infrastructure

Steel round bars are widely used in construction for reinforcement purposes, particularly in concrete structures. Their high tensile strength helps strengthen buildings, bridges, and other infrastructure projects.

Automotive industry

In the automotive sector, steel round bars are used to make shafts, axles, and engine components. Their ability to withstand heavy loads and high stress makes them ideal for such critical parts.

Machinery and tools

Machinery parts, such as gears, spindles, and axles, often require steel round bars due to their durability and ability to withstand wear and tear. Additionally, tools like hammers, wrenches, and chisels are often crafted from steel round bars.

Manufacturing and fabrication

Manufacturing industries rely heavily on steel round bars for creating various machine parts, frames, and structural components. Their ease of machining ensures efficient production with minimal waste.

Aerospace and defence

For high-performance applications, such as in the aerospace and defence sectors, alloy steel round bars are often the material of choice. These industries demand materials that can withstand extreme stress and high temperatures.

FAQ

Q: What advantages does wholesale purchase of steel round bars offer?

A: Discover the perfect Steel Round Bar addition with our Steel Bar Factory.Wholesale purchase of steel round bars allows for cost savings, bulk availability, and consistent quality. Suppliers often provide discounts and customization options for large orders, providing value and long-term benefits for your business.

Q: How to measure round bar?

A: You would have to measure the circumference of the bar and divide that figure by 3.14 to obtain the diameter. But it is usual to MEASURE the diameter of the bar with some satisfactory tool, like a slide caliper, which will give the diameter!

Q: How is round bar typically specified?

A: The dimensions of a round bar are typically specified by its diameter, which is the distance across the circular cross-section. Common diameters range from a fraction of an inch to several inches, and the dimensions are usually specified in inches or millimeters.

Q: What is a round bar used for?

A: Round bar is a steel bar with a smooth surface which is used for construction that does not request high-strength reinforced concrete works. It is widely used on beam and column stirrups, pipelines, roads, small and medium-sized projects.

Q: What are the advantages of round bars?

A: Some of the advantages of the round bar are its high strength, versatility, malleability, good surface finish, corrosion resistance, and adaptability. The steel round bar, for example, is perfect for use in extreme conditional environments due to its high melting point.

Q: What are the applications of reinforcement bars?

A: It is used in bridges, buildings, skyscrapers, homes, warehouses, and foundations to increase the strength of a concrete structure. Rebar is used in concrete to provide additional strength, as concrete is weak in tension, while steel is strong in both tension and compression.

Q: Where is round bar used?

A: The round bar has a smooth surface and is used for constructions that do not require high-strength reinforced concrete due to poor adhesive factors. It is mainly used on stirrups for beams and columns, pipelines, roads, and small and medium-sized construction projects.

Q: Which bars are used in construction?

A: TMT bars, also known as thermo-mechanically treated bars are widely accepted in the construction world owing to their immense strength and ductility. In addition to the above, they are earthquake resistant and provide maximum protection during earthquakes or floods.

Q: What size bars are used to reinforce the foundation?

A: The three different sizes of rebar used for home projects are usually # 3, # 4 and # 5. Rebar size # 3 is used for driveways and patios. For walls and columns, # 4 rebar is better, as these structures require more strength. For footers and foundations, it's best to use the # 5 rebar.

Q: What is the heat treatment of steel bars?

A: The heat treatment of bars can be performed to improve machinability, increase toughness, improve cold forming characteristics, alter hardness and tensile strength up or down, to relieve residual stress, and to improve shearability.

As one of the leading round bar manufacturers and suppliers in China, we warmly welcome you to buy high-grade round bar for sale here from our factory. For more information, contact us now.high carbon steel round bar, c276 round bar, 15 5 PH Stainless Steel Round Bar