High quality round bar 5-100

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Loading Port:: China Main Port

Payment Terms:: TT OR LC

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Supply Capability:: -

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Product Description:

High Quality Round Bar Details:

Minimum Order Quantity:	25 Tons	Unit:	m.t.	Loading Port:	Tianjin
Supply Ability:	500 Tons Per Day	Payment Terms:	TT or L/C

Product Description:

Specifications of High Quality Round Bar

1. Grade: GB, JIS, ASTM, EN

2. Grade: Q235, SS400, A36, S235JR

3. Diameter and mass: As below

Diameter	Mass	Diameter	Mass	Diameter	Mass
(mm)	(kg/m)	(mm)	(kg/m)	(mm)	(kg/m)
6	0.22	22	2.98	53	17.30
7	0.30	24	3.55	56	19.30
8	0.40	25	3.85	60	22.20
9	0.50	26	4.17	63	24.50
10	0.62	28	4.83	65	26.00
11	0.75	30	5.55	70	30.20
12	0.89	32	6.31	75	34.70
13	1.04	34	7.13	80	39.50
14	1.21	36	7.99	85	44.50
15	1.39	38	8.90	90	49.90
16	1.58	40	9.86	95	55.60
17	1.78	42	10.90	100	61.70
18	2.00	45	12.50	120	88.85
19	2.23	48	14.20	140	120.93
20	2.47	50	15.40	150	138.82

4. Material: Mild Steel

5. Heat treatment of high quality steel:

Fire: Isothermal annealing temperature is 800 ~ 880 °C, with 10 ~ 20 °C, the furnace cooling to about 600 °C, hardness above HB269.

Preheat temperature: 730-730 °C

Quenching temperature: 1190-1210 °C

Tempering temperature: 540-595 °C

Cold drawn, hardness 285 HBS

Cold drawn after annealing condition, hardness 277 HBS

Quenching methods: oil quenching, air cooling or salt bath quenching

Usage and Applications of High Quality Round Bar

1) Suitable for making various strong cutting tool abrasion resistance, impact resistance.

2) Used to produce all kinds of high hard and super hard saw blade, drill, tap, broach, gear hob and various kinds of milling cutter.

3) Used for advanced punching die, screw die, and the toughness and complicated shape of the punch, etc.

4) Is used for cold forging die and drawing mode, etc.

5) Recommended watchcase factory, screw factory and other cold stamping products industry use.

Packaging & Delivery of High Quality Round Bar

Packaging Detail: All goods are packed in bundle with steel strips and shipped by break bulk vessel or container (depend on target market and different ports)

Delivery Detail: 45 days

Trade terms: FOB, CFR, CIF

MOQ: 25 tons per specification; we can negotiate the quantity if the specification is normal or we have stock of one specification.

Weight: Theprice invoicing on theoretical weight basis or actual weight basis depends on customer’s request.

Shipment: The shipment of bulk break or container is depends on customer’s request and the situation of the port of destination.

Documents given: Full set of original clean on board bill of lading; Original signed commercial invoice; Original packing list; Policy of insurance; Certificate of origin and what the target market needs.

Production Flow of High Quality Round Bar

The common processes are preheated forging quenching, dual refinement solution process, cooling quenching and isothermal quenching. We use heat treatment for dual refinement solution process. The main measures process is high temperature solution and refinement cycle. High temperature solution can improve the carbide morphology and particle size. The aim is to make the loop refinement ultrafine austenite grains

Q: What is the difference between common wire and high-speed wire?: Round steel and other steel (wire line, PU) difference: 1 is not the same, round shape light round, no pattern without ribs, other steel surface appearance is engraved or ribbed, cohesive force that cause steel and concrete, and the bond strength of steel and concrete in the other. 2 ingredients are different, round steel (grade a steel) belongs to ordinary low carbon steel, and other steel bars are mostly alloy steel. 3 strength, steel and other steel with high strength low strength, namely, diameter of the same size as compared with other steel, round steel can bear the pulling force than other reinforced small, but the plastic steel reinforced bar is stronger than the other, there is a large deformation in the break before, and it reinforced the deformation the break before the much smaller.

Q: Can steel round bars be bent or formed into shapes?: Yes, steel round bars can be bent or formed into various shapes through processes such as heating, hammering, or using specialized machinery like bending tools or hydraulic presses.

Q: What is the typical tolerance for diameter and length in steel round bars?: The typical tolerance for diameter and length in steel round bars can vary depending on the specific industry standards and requirements. However, in general, the tolerance for diameter in steel round bars is typically around +/- 0.005 to 0.010 inches. This means that the actual diameter of the bar can be up to 0.010 inches larger or smaller than the specified diameter. Similarly, the tolerance for length in steel round bars is usually around +/- 0.125 to 0.250 inches. This means that the actual length of the bar can be up to 0.250 inches longer or shorter than the specified length. It is important to note that these tolerances can differ based on the intended application and the specific standards set by the manufacturing industry. Therefore, it is crucial to consult the relevant industry standards or the manufacturer's specifications to determine the precise tolerances required for a particular steel round bar.

Q: What are the specifications and standards for steel round bars?: The specifications and standards for steel round bars vary depending on their intended use and industry requirements. However, there are general specifications and standards that apply to most steel round bars. To start, the dimensions of steel round bars are typically specified in terms of diameter, length, and tolerance levels. The diameter can range from a few millimeters to several inches, while the length can vary according to customer needs. Tolerance levels indicate the allowable deviation from the specified dimensions, ensuring the bars meet desired accuracy and consistency. In terms of material composition, steel round bars are predominantly made from carbon steel, alloy steel, or stainless steel. The specific grade and composition depend on the application, such as structural, construction, automotive, or aerospace. These grades are established by organizations like ASTM or ISO, which define the chemical composition, mechanical properties, and other characteristics of the steel. Steel round bars must meet certain standards for mechanical properties to ensure their strength, ductility, and resilience. These properties include tensile strength, yield strength, elongation, hardness, impact resistance, and more. Relevant organizations like ASTM or ISO specify the standards for these properties, providing guidelines for manufacturers and users to ensure the bars are suitable for their intended applications. Surface finish is another important aspect of steel round bars. Standard surface finish options include black, peeled, ground, polished, or chrome-plated, among others. These finishes impact appearance, corrosion resistance, and ability to withstand wear and tear. Additionally, steel round bars may need to adhere to specific standards for heat treatment, such as annealing, quenching, or tempering, to enhance their mechanical properties or improve machinability. Overall, the specifications and standards for steel round bars cover dimensions, material composition, mechanical properties, surface finish, and heat treatment requirements. These standards ensure that steel round bars meet necessary quality, performance, and safety criteria for their designated applications. Manufacturers, suppliers, and end-users must be aware of these specifications and standards to select and use steel round bars appropriately.

Q: What are the different packaging options for steel round bars?: There are several packaging options available for steel round bars, depending on the specific needs and requirements of the customer. Some of the common packaging options include: 1. Bundles: Steel round bars are often bundled together using steel straps or wire to create a compact and secure package. Bundles can vary in size, with common options being 2, 3, 4, or 5 tons. This packaging option is suitable for transportation and storage purposes. 2. Wooden Crates: For added protection during transportation, steel round bars can be packed in wooden crates. These crates are designed to withstand the weight and size of the bars, ensuring safe delivery to the customer. 3. Steel Cages: In some cases, steel round bars are packaged in steel cages or racks to provide additional stability and security during transportation. These cages are typically made of sturdy steel and are stackable, making them suitable for storage purposes as well. 4. Plastic Wrapping: To protect the steel round bars from moisture, dust, and other contaminants, they can be wrapped in plastic or shrink wrap. This packaging option is commonly used when the bars are stored or transported in open-air environments. 5. Customized Packaging: Depending on the customer's specific requirements, steel round bars can be packaged in custom-designed containers or crates. These can be tailored to accommodate different sizes, weights, and quantities of bars, ensuring maximum convenience and safety during handling and transportation. It is important to note that the choice of packaging option may vary depending on factors such as the destination, mode of transportation, and specific industry standards. Therefore, it is advisable for customers to consult with their suppliers or packaging experts to determine the most suitable packaging option for their steel round bars.

Q: What are the different methods used for machining steel round bars?: Machining steel round bars involves the use of various methods, each with its own advantages and applications. Some commonly employed techniques are as follows: 1. Turning: To achieve the desired shape, the steel round bar is rotated against a cutting tool that removes material. Turning is suitable for both external and internal operations, ensuring high precision and excellent surface finish. 2. Milling: This versatile method employs a rotating multi-tooth cutter to remove material from the steel round bar, creating flat or contoured surfaces. It is ideal for face milling, slotting, and profiling. 3. Drilling: Holes of different sizes and depths are created in the steel round bar using a rotating drill bit. This method can be performed manually or through automated processes. 4. Grinding: Precision is key in grinding, a machining technique that employs abrasives to remove material from the steel round bar. It ensures smooth surface finish, tight tolerances, and precise dimensions. Grinding machines, such as cylindrical or surface grinders, are utilized. 5. Boring: Boring enlarges existing holes or creates internal cylindrical shapes within the steel round bar. This technique involves rotating a cutting tool inside the bar to achieve desired dimensions and surface finish. 6. Broaching: Complex internal or external shapes are created using a broach, a multi-toothed cutting tool. The broach is pushed or pulled through the steel round bar to remove material and form the desired shape. 7. Sawing: The steel round bar is cut into desired lengths or shapes using a rotating blade with teeth. Sawing is efficient for mass production and can be done manually or with automated machines. These methods are just a selection of the techniques used for machining steel round bars. The choice of method depends on factors such as the desired shape, dimensions, tolerances, and surface finish, as well as the production volume and available equipment.

Q: How do steel round bars perform in low-temperature environments?: Steel round bars generally perform well in low-temperature environments. The mechanical properties of steel, such as strength and toughness, are typically maintained at low temperatures. However, it is important to consider the specific grade of steel being used, as some grades may exhibit reduced impact resistance or brittleness at extremely low temperatures. One common concern is the potential for brittle fracture in steel round bars at low temperatures. This can occur when the steel transitions from a ductile to a brittle state. However, most standard steel grades used in construction and industry are designed to resist brittle fracture even in low-temperature environments. Certain special alloy steels, such as low-temperature carbon steels, are specifically formulated to provide superior performance in extremely cold conditions. These steels contain additional elements, such as nickel or manganese, which enhance their low-temperature properties. They are often used in applications that require excellent toughness and impact resistance, such as offshore structures or cryogenic storage tanks. In summary, steel round bars generally perform well in low-temperature environments, and their mechanical properties are typically maintained. However, it is important to select the appropriate steel grade for the specific low-temperature application to ensure optimal performance and prevent potential issues such as brittle fracture.

Q: Can steel round bars be used in the mining industry?: Yes, steel round bars can be used in the mining industry. Steel round bars are commonly used in various mining applications due to their strength, durability, and resistance to corrosion. They are used in the construction of mining equipment, such as crushers, conveyors, and drill rods. Steel round bars are also utilized in the production of support structures, such as mine shafts and tunnels, as well as in the fabrication of drilling tools and machinery. Their versatility and high tensile strength make them an ideal choice for the demanding and harsh conditions often encountered in the mining industry.

Q: How are steel round bars used in the automotive industry?: Due to their strength, durability, and versatility, steel round bars are commonly employed in the automotive industry for a range of purposes. The production of crankshafts is one of the primary uses of steel round bars in this industry. Crankshafts are essential in converting the reciprocating motion of pistons into rotational motion, which powers the vehicle. Steel round bars are highly suitable for this function due to their high tensile strength, exceptional fatigue resistance, and ability to endure high torque loads. Steel round bars are also utilized in the manufacture of axles. Axles play a critical role in transferring power from the engine to the wheels while supporting the vehicle's weight and ensuring stability. Steel round bars provide the necessary strength and rigidity to handle the substantial loads and forces experienced by axles. Furthermore, steel round bars are employed in the production of suspension components like tie rods and sway bars. Tie rods are crucial for steering and maintaining proper alignment, while sway bars help control body roll and enhance handling. Steel round bars are preferred for these applications due to their exceptional torsional strength, enabling them to withstand the forces and stresses encountered during steering and suspension movements. Moreover, steel round bars are used in the creation of transmission shafts. Transmission shafts are responsible for transmitting power from the engine to the wheels through the gearbox. Steel round bars are well-suited for this task due to their high strength, resistance to bending, and ability to handle the rotational forces and torque generated by the engine. In conclusion, steel round bars are extensively employed in the automotive industry for various applications including crankshafts, axles, suspension components, and transmission shafts. Their superior strength, durability, and versatility make them an ideal choice for these critical components, ensuring the safety, performance, and reliability of vehicles.

Q: What is the difference between strip steel and round steel? Where are they mainly used?: Strip steel is a kind of narrow and long steel plate produced by various rolling mills to meet the needs of industrial production of various metal or mechanical products in different industrial sectors. Strip steel, also known as steel strip, is within 1300mm in width, and the length varies slightly according to the size of each roll. The strip is supplied in general, and has the advantages of high dimensional accuracy, good surface quality, easy processing and material saving. Same as steel plate, strip steel is divided into two kinds of ordinary strip steel and high quality strip steel according to the material used, and two kinds of hot-rolled strip steel and cold rolled strip steel according to processing method.Strip steel is widely used in the production of welded steel pipe, made of cold formed steel billet, manufacturing bicycle frame, rim, clamp, gasket, spring, saw blades, hardware and blades.

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