Hot rolled round bar for construction Q235
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT or LC
- Min Order Qty:
- 25 m.t.
- Supply Capability:
- 100000 m.t./month
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OKorder Financial Service
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Product Description:
OKorder is offering hot rolled round bar for construction Q235 at great prices with worldwide shipping. Our supplier is a world-class manufacturer of steel, with our products utilized the world over. OKorder annually supplies products to European, North American and Asian markets. We provide quotations within 24 hours of receiving an inquiry and guarantee competitive prices.
Product Applications:
Hot rolled round bar are ideal for structural applications and are widely used in the construction of buildings and bridges, and the manufacturing, petrochemical, and transportation industries.
Product Advantages:
OKorder's round bar are durable, strong, and resist corrosion.
Main Product Features:
· Premium quality
· Prompt delivery & seaworthy packing (30 days after receiving deposit)
· Corrosion resistance
· Can be recycled and reused
· Mill test certification
· Professional Service
· Competitive pricing
Product Specifications:
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: The price 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.
FAQ：
Q1: How do we guarantee the quality of our products?
A1: We have established an advanced quality management system which conducts strict quality tests at every step, from raw materials to the final product. At the same time, we provide extensive follow-up service assurances as required.
Q2: How soon can we receive the product after purchase?
A2: Within three days of placing an order, we will begin production. The specific shipping date is dependent upon international and government factors, but is typically 7 to 10 workdays.
- Q:What is the maximum length of a steel round bar?
- The maximum length of a steel round bar can vary depending on several factors such as the diameter of the bar, the manufacturing capabilities of the steel supplier, and the transportation limitations. Generally, steel round bars are produced in standard lengths that range from 6 to 12 meters (20 to 40 feet). However, it is possible to manufacture longer bars through special processes or by joining multiple bars together using welding techniques. In some cases, steel round bars can be custom-made to exceed standard lengths, but this would require specific arrangements with the supplier and considerations for logistics and handling during transportation. Ultimately, the maximum length of a steel round bar is determined by practical limitations and the specific requirements of the project or application.
- Q:Can steel round bars be used in the construction of bridges?
- Yes, steel round bars can be used in the construction of bridges. They provide structural strength, durability, and flexibility, making them suitable for various components such as piers, beams, and reinforcements. The high tensile strength of steel round bars allows for the construction of longer and larger bridges, ensuring stability and safety. Additionally, steel is resistant to corrosion, which is crucial in bridge construction due to exposure to environmental elements.
- Q:What is the difference between steel and flat steel, round steel and steel?
- In fact, for the processing of raw materials are the same, is used when the roller rolling pressure is not the same, there are many different types of tooth roller shaft, can produce different steel, the steel section is square, round cross section is round
- Q:Are steel round bars suitable for use in food processing equipment?
- No, steel round bars are not suitable for use in food processing equipment. Food processing equipment requires materials that are resistant to corrosion, easy to clean, and non-reactive with food substances. While steel round bars are strong and durable, they are prone to rust and can contaminate food with metallic particles. Stainless steel, on the other hand, is the ideal choice for food processing equipment due to its high resistance to corrosion, easy cleanability, and non-reactive properties. It is important to prioritize the safety and hygiene of food processing equipment, and therefore, steel round bars should not be used in this context.
- Q:What are the different heat treatment processes used for steel round bars?
- There are several heat treatment processes that are commonly used for steel round bars to enhance their mechanical properties and improve their overall performance. These processes include annealing, normalizing, quenching, tempering, and case hardening. 1. Annealing: This process involves heating the steel round bars to a specific temperature and then cooling it slowly to relieve internal stresses and improve its ductility. Annealing also refines the grain structure of the steel, making it softer and more workable. 2. Normalizing: Similar to annealing, normalizing involves heating the steel round bars to a specific temperature, but in this case, it is cooled in still air. Normalizing helps to refine the grain structure and improve the steel's mechanical properties, such as strength and toughness. 3. Quenching: Quenching is a rapid cooling process that involves immersing the steel round bars in a quenching medium, such as oil, water, or polymer. This process is used to achieve high hardness and strength by transforming the steel's microstructure, known as martensite formation. However, quenching can also make the steel more brittle, so it is often followed by tempering. 4. Tempering: Tempering is a heat treatment process that involves reheating the quenched steel round bars to a specific temperature and then cooling it slowly. This process helps to reduce the brittleness caused by quenching and improves the steel's toughness and ductility. The temperature and duration of tempering can be adjusted to achieve the desired mechanical properties. 5. Case hardening: Case hardening is a surface heat treatment process used to increase the hardness and wear resistance of the steel round bars. It involves introducing carbon or other alloying elements to the surface of the steel and then heating it to a specific temperature. This process forms a hardened outer layer while maintaining a tough core. These different heat treatment processes provide steel round bars with a wide range of mechanical properties and performance characteristics, allowing them to be used in various applications, including automotive, construction, manufacturing, and aerospace industries. The specific heat treatment process selected depends on the desired properties, the steel composition, and the intended application of the round bars.
- Q:What is the difference between a hot rolled and a cold drawn steel round bar?
- The main difference between a hot rolled and a cold drawn steel round bar lies in their production process and resulting characteristics. Hot rolled steel round bars are produced by heating a billet or ingot to a high temperature and then shaping it into the desired form, typically through rolling. This process results in a rough, scaled surface with rounded edges. Hot rolling allows for larger sizes and quantities to be produced quickly and efficiently. The steel is less precise in terms of dimensions and has a lower surface finish quality compared to cold drawn steel. On the other hand, cold drawn steel round bars are produced by pulling a hot rolled bar through a die at room temperature, which results in a smooth, polished surface with tighter dimensional tolerances. This process enhances the mechanical properties of the steel, such as improved strength, hardness, and dimensional accuracy. Cold drawing also provides a better surface finish and closer dimensional control compared to hot rolling. In terms of applications, hot rolled steel round bars are commonly used in construction, manufacturing, and general fabrication due to their lower cost and ease of production. They are suitable for applications where precision and surface finish are not critical factors. Cold drawn steel round bars, on the other hand, are often utilized in more demanding applications that require superior dimensional accuracy, surface finish, and mechanical properties. They are commonly used in automotive, aerospace, and machinery industries, where precision and quality are paramount. In summary, the main differences between hot rolled and cold drawn steel round bars lie in their production process, resulting surface finish, dimensional accuracy, and mechanical properties. The choice between the two depends on the specific requirements and applications of the steel.
- Q:Do steel round bars have a maximum load capacity?
- Steel round bars do possess a maximum load capacity. The load capacity is determined by several factors, including the bar's diameter, length, type and grade of steel, and the industry standards or specific application it is used for. Testing and analysis are typically employed to determine the load capacity, taking into account factors like yield strength, ultimate tensile strength, and the bar's ability to withstand bending or deformation under load. To maintain safety and structural integrity, it is crucial to refer to engineering specifications and guidelines to prevent exceeding the maximum load capacity of a steel round bar.
- Q:Can steel round bars be used in high temperature applications?
- High temperature applications can make use of steel round bars. Yet, the steel type and composition play a pivotal role in determining their appropriateness for such circumstances. Specific steel grades, like stainless steel or heat-resistant alloys, are purposefully crafted to endure high temperatures, upholding their strength and avoiding deformation. These steel round bars find applications in furnace components, boiler tubes, and heat exchangers, where they confront intense heat. To guarantee optimal performance and longevity, it is vital to carefully choose the suitable steel grade based on the application's specific temperature demands and conditions.
- Q:Can steel round bars be used in the agriculture industry?
- Steel round bars find extensive use in the agriculture industry, where they serve a multitude of purposes. Commonly employed in the construction of farm equipment, fencing, and building structures, steel round bars are renowned for their robustness and longevity, rendering them ideal for demanding tasks within the agricultural sector. Moreover, these bars exhibit exceptional resistance to harsh weather conditions and corrosion, thereby ensuring their enduring reliability and durability in agricultural settings. In essence, steel round bars emerge as a versatile and pragmatic option for the agriculture industry, owing to their immense strength, durability, and ability to withstand environmental factors.
- Q:Are steel round bars suitable for the production of springs?
- Yes, steel round bars are suitable for the production of springs. Steel round bars are commonly used in the manufacturing of springs due to their high strength, durability, and ability to withstand heavy loads and repeated stress. They provide the necessary rigidity and flexibility required for effective spring functioning. Additionally, steel round bars can be easily shaped and manipulated into various spring designs, making them a preferred choice in the production of springs.
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Hot rolled round bar for construction Q235
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT or LC
- Min Order Qty:
- 25 m.t.
- Supply Capability:
- 100000 m.t./month
OKorder Service Pledge
OKorder Financial Service
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