Roung BAR

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Loading Port:: China Main Port

Payment Terms:: TT OR LC

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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: Can steel round bars be used in the agricultural industry?: Indeed, the agricultural industry can utilize steel round bars. Within this sector, there exists a broad array of applications for them, including the construction of fences, gates, and livestock enclosures. Moreover, steel round bars are frequently employed as support and reinforcement in structures like barns, sheds, and agricultural machinery. Due to their exceptional strength and durability, they are well-suited for enduring the challenging conditions and heavy loads often encountered in agricultural environments. Furthermore, steel round bars can undergo further processing and fabrication, resulting in an assortment of agricultural tools and equipment, such as hitches, plows, and cultivators. In summary, steel round bars represent a versatile and dependable material capable of effectively satisfying the agricultural industry's requirements.

Q: Can steel round bars be used for making fasteners or bolts?: Yes, steel round bars can be used for making fasteners or bolts. Steel is a commonly used material for fasteners and bolts due to its high strength, durability, and resistance to corrosion. Round bars made of steel can be easily machined and threaded to create various types of fasteners and bolts, including screws, nuts, and threaded rods. The specific grade of steel used would depend on the application and required strength properties. However, it is important to note that the manufacturing process and quality control are crucial in ensuring the reliability and performance of the final product.

Q: How are steel round bars used in the construction of offshore structures?: Steel round bars are commonly used in the construction of offshore structures due to their high strength and durability. These bars are typically made from carbon steel or alloy steel, which are known for their excellent mechanical properties. In offshore construction, steel round bars are primarily used to provide structural support and reinforcement. They are used in various applications, such as the construction of oil rigs, offshore platforms, pipelines, and subsea structures. One of the key uses of steel round bars is in the fabrication of piles. Piles are long, cylindrical structures that are driven into the seabed to provide a stable foundation for offshore structures. These piles are typically made from steel round bars due to their ability to withstand the harsh marine environment and high loads. Steel round bars are also used in the construction of offshore platforms. These platforms are large, elevated structures that provide a workspace for oil and gas exploration and production activities. The steel round bars are used to create the framework of the platform, forming the main structural elements such as columns, beams, and trusses. These bars are often welded or bolted together to create a strong and rigid structure capable of withstanding extreme weather conditions and heavy loads. Furthermore, steel round bars are utilized in the construction of pipelines that transport oil and gas from offshore wells to onshore facilities. These bars are used to create the pipeline supports, ensuring that the pipeline remains stable and securely fastened to the seabed. In conclusion, steel round bars play a vital role in the construction of offshore structures. Their high strength, durability, and ability to withstand harsh marine environments make them an ideal choice for providing structural support and reinforcement in offshore construction projects.

Q: How are steel round bars used in the construction of tunnels and underground structures?: Steel round bars are commonly used in the construction of tunnels and underground structures as reinforcement for concrete. These bars are placed within the concrete to provide strength and stability, preventing the structure from cracking or collapsing under pressure. The steel round bars also enhance the overall durability and load-bearing capacity of the tunnel or underground structure, ensuring its long-term structural integrity.

Q: What is the toughness of a steel round bar?: The toughness of a steel round bar refers to its ability to absorb energy and resist fracture when subjected to impact or sudden loads. It is a measure of its resilience and ability to withstand stress without breaking.

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: Are steel round bars suitable for use in the marine industry?: Yes, steel round bars are suitable for use in the marine industry. Steel is known for its strength, durability, and corrosion resistance, making it an excellent choice for marine applications. Steel round bars are commonly used in shipbuilding, offshore structures, and other marine equipment due to their ability to withstand harsh weather conditions, saltwater exposure, and heavy loads. Additionally, steel's versatility allows for easy fabrication and customization to meet specific requirements in the marine industry.

Q: What is the maximum molybdenum content allowed for steel round bars?: The maximum molybdenum content allowed for steel round bars varies depending on the grade and specific requirements of the steel. Generally, the maximum molybdenum content for standard carbon and alloy steels is around 0.25-0.30%. However, for high-performance steels such as tool steels or stainless steels, the maximum molybdenum content can be higher, ranging from 1-10%, depending on the specific grade and application. It is crucial to consult the relevant industry standards, specifications, or material data sheets to determine the precise maximum molybdenum content allowed for a specific steel round bar.

Q: What is the difference between a ground and a polished steel round bar?: The surface finish and appearance of a ground steel round bar and a polished steel round bar differentiate them from each other. To achieve a smooth and even surface finish, a grinding process is applied to a ground steel round bar. This involves the use of a grinding wheel or belt to remove any surface imperfections like roughness or irregularities. Ground steel round bars are commonly employed in applications that require precision and tight tolerances, such as in machinery or automotive components. On the contrary, a polishing process is used to create a high shine and reflective surface on a polished steel round bar. This process involves the use of abrasive materials like polishing compounds or buffing wheels. It enhances the aesthetics of the steel bar, making it visually appealing. Polished steel round bars find frequent use in decorative applications, architectural projects, or industries where a visually pleasing appearance is desired, such as jewelry or interior design. In conclusion, the surface finish is the key differentiating factor between ground and polished steel round bars. Ground steel round bars prioritize precision and smoothness, whereas polished steel round bars prioritize a shiny and reflective appearance.

Q: What is the cost of a steel round bar?: The price of a steel round bar can fluctuate based on various elements, including its dimensions, quality, and the source from which it is obtained. Typically, the larger the diameter and length of the round bar, the more expensive it becomes. Moreover, the steel grade significantly influences the cost since different grades possess different levels of robustness and endurance. Furthermore, the supplier and location also influence the price due to factors such as transportation and market demand. To obtain a precise cost estimation, it is advisable to reach out to a nearby supplier or consult online metal marketplaces for up-to-date pricing information.

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