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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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: How do steel round bars perform under cyclic loading?
- Steel round bars exhibit excellent performance under cyclic loading due to their high strength and ductility, enabling them to withstand significant stress without deformation or failure. The fatigue characteristics of steel round bars are influenced by various factors, including material composition, heat treatment, and surface finish. Bars with higher tensile strength and hardness demonstrate superior fatigue resistance, enabling them to endure higher stress levels before failure. Cyclic loading subjects steel round bars to stress cycles that induce alternating compression and tension forces. These cycles can initiate and propagate cracks, ultimately leading to failure. However, steel's inherent ductility allows it to absorb energy and redistribute stress, thereby mitigating crack propagation and extending the bar's fatigue life. Fatigue strength assessments typically involve subjecting steel round bars to a specified number of stress cycles until failure occurs. These tests yield valuable information on the bar's endurance limit and fatigue life under different loading conditions. Various techniques, such as shot peening, surface coating, and induction of residual stress, can be employed to enhance the fatigue performance of steel round bars. These techniques introduce compressive stress on the bar's surface, inhibiting crack initiation and propagation, thereby improving fatigue resistance. In summary, steel round bars are reliable and durable when subjected to cyclic loading, making them suitable for applications involving repeated or fluctuating stresses, such as structural components, automotive parts, and machinery components. However, careful consideration of loading conditions, material properties, and design criteria is necessary to ensure optimal performance and longevity when selecting steel round bars.
- Q: What are the different surface treatments available for stainless steel round bars?
- There are various surface treatments available for stainless steel round bars, including pickling, passivation, polishing, and coating.
- Q: Can steel round bars be welded?
- Steel round bars can indeed be welded, as welding is a widely employed technique for connecting them. This involves heating the bars to a considerable temperature and subsequently applying pressure to fuse them, resulting in robust and long-lasting connections. Nonetheless, it is crucial to utilize suitable welding techniques and equipment in order to attain a weld of superior quality.
- Q: Can steel round bars be used in the aerospace industry?
- Steel round bars have the capacity to be utilized in the aerospace industry. Steel is a versatile substance that finds application in diverse sectors, including aerospace. In the construction of aircraft components and structures, such as landing gears, engine parts, and structural supports, steel round bars are frequently employed. Steel possesses exceptional strength and durability, crucial attributes for guaranteeing aircraft safety and reliability in the aerospace field. Moreover, steel round bars can be customized and manipulated to meet the specific design and performance necessities of aerospace applications. In summary, steel round bars are an appropriate material selection for numerous aerospace applications owing to their mechanical properties, dependability, and cost-effectiveness.
- Q: How do you measure the diameter tolerance of a steel round bar?
- To determine the diameter tolerance of a steel round bar, one can adhere to the following procedure: 1. Acquire a caliper or micrometer, which are commonly employed tools for accurately gauging object diameters. 2. Set up the measuring tool appropriately: Adjust the jaws of the caliper to the suitable size range or ensure correct zeroing of the micrometer. 3. Situate the round bar: Place the steel round bar on a stable and flat surface, taking care to prevent any rolling or movement. 4. Perform the measurement: Utilize the measuring tool to record the diameter of the round bar. For precise outcomes, ensure that the tool is perpendicular to the bar and exert gentle pressure to obtain an accurate reading. 5. Repeat the measurement: To ensure accuracy, take multiple measurements at various points along the length of the round bar. This will account for any variations or deviations in the bar's diameter. 6. Calculate the average diameter: Sum up all the measurements and divide by the number of measurements taken. This will yield the average diameter of the round bar. 7. Compare with the tolerance range: Refer to the provided specifications or standards for the steel round bar to ascertain the allowable tolerance range. This range will indicate the acceptable variation in diameter for the bar. 8. Analyze the findings: Compare the average diameter derived from the measurements with the specified tolerance range. If the average diameter falls within the tolerance range, the round bar complies with the required specifications. However, if it deviates beyond the range, further inspection or adjustment may be necessary to meet the required tolerance. By adhering to these steps, one can effectively gauge the diameter tolerance of a steel round bar and ensure its conformity to the necessary specifications for the intended application.
- Q: Are steel round bars suitable for use in the aerospace industry?
- Steel round bars are indeed appropriate for utilization in the aerospace sector. These bars possess exceptional robustness and resilience, rendering them an optimal selection for diverse applications in aerospace engineering. With their elevated tensile strength, they can endure the extreme temperatures and pressures commonly encountered during aerospace operations. Additionally, steel round bars exhibit commendable resistance against corrosion, a vital attribute for preserving the structural integrity of aircraft that face varying environmental conditions. Furthermore, their ability to be easily machined and welded makes them highly adaptable for producing components and structures within the aerospace industry. Ultimately, steel round bars represent a dependable and economically viable material option for aerospace applications.
- Q: How are steel round bars used in the manufacturing of hydraulic cylinders?
- Steel round bars are a crucial component in the manufacturing of hydraulic cylinders due to their strength, durability, and versatility. These round bars are typically made from carbon steel, alloy steel, or stainless steel, which are all known for their high tensile strength and resistance to corrosion. The first step in using steel round bars for hydraulic cylinders is the selection of the appropriate diameter and length. The diameter of the round bar determines the overall strength of the hydraulic cylinder, and the length determines its size and capacity. Once the desired dimensions are determined, the steel round bars are cut to the required length using specialized cutting tools. Next, the steel round bars undergo a series of processes to shape them into the necessary components of a hydraulic cylinder. This includes machining, drilling, and turning operations to create features such as threaded ends, grooves, and mounting surfaces. These processes are carried out with precision to ensure the round bars meet the exact specifications of the hydraulic cylinder design. After the shaping processes, the steel round bars are heat-treated to enhance their mechanical properties. Heat treatment involves heating the round bars to a specific temperature and then rapidly cooling them to achieve the desired hardness, toughness, and dimensional stability. This step is crucial in ensuring the hydraulic cylinders can withstand the high pressures and forces they will encounter during operation. Once the steel round bars have been shaped and heat-treated, they are further processed to achieve the desired surface finish. This can involve processes such as grinding, polishing, or coating to improve the round bars' appearance and resistance to corrosion. The surface finish is important for ensuring smooth operation and preventing any potential leaks or damage to the hydraulic cylinder. Finally, the steel round bars are assembled with other components such as piston rods, cylinder heads, and seals to complete the hydraulic cylinder. These assemblies are carried out using advanced welding or fastening techniques to ensure the components are securely attached and can withstand the forces and pressures exerted during hydraulic operation. In summary, steel round bars play a vital role in the manufacturing of hydraulic cylinders by providing the necessary strength, durability, and versatility required for these critical components. From the initial selection of the appropriate diameter and length to the shaping, heat treatment, and assembly processes, the use of steel round bars ensures the hydraulic cylinders can effectively transmit hydraulic power while withstanding the demanding conditions they are designed for.
- Q: What are the different types of steel round bars available in the market?
- There are several different types of steel round bars available in the market, each with its own unique characteristics and applications. Some of the most common types include: 1. Mild Steel Round Bars: These are the most commonly used type of steel round bars due to their versatility and affordability. They have a low carbon content and are easy to weld and machine, making them suitable for a wide range of applications. 2. Carbon Steel Round Bars: Carbon steel round bars have a higher carbon content than mild steel, which gives them increased strength and hardness. They are commonly used in applications that require high strength, such as construction and machinery manufacturing. 3. Alloy Steel Round Bars: Alloy steel round bars are made by adding various alloying elements, such as chromium, nickel, or molybdenum, to improve their mechanical properties. These bars offer enhanced strength, toughness, and resistance to wear and corrosion, making them ideal for applications in the aerospace, automotive, and oil and gas industries. 4. Stainless Steel Round Bars: Stainless steel round bars are highly corrosion-resistant due to the presence of chromium, which forms a protective oxide layer on the surface. They are widely used in industries such as food processing, pharmaceuticals, and chemical processing, where resistance to corrosion and hygiene are crucial. 5. Tool Steel Round Bars: Tool steel round bars are specifically designed for tooling applications, such as cutting, drilling, and shaping materials. They have high hardness, wear resistance, and heat resistance, making them suitable for manufacturing tools and dies. 6. Duplex Steel Round Bars: Duplex steel round bars are a type of stainless steel that contains both austenitic and ferritic microstructures. They offer a combination of high strength, excellent corrosion resistance, and good weldability, making them ideal for applications in the chemical and petrochemical industries. These are just a few examples of the different types of steel round bars available in the market. The choice of the right type depends on the specific requirements of the application, including strength, corrosion resistance, machinability, and cost.
- Q: How do steel round bars compare to other materials like aluminum or stainless steel?
- Steel round bars have several advantages over other materials like aluminum or stainless steel. Firstly, steel is known for its exceptional strength and durability, making it a preferred choice for applications that require high tensile strength. Compared to aluminum, steel round bars are generally stronger and have a higher resistance to impact and wear. Additionally, steel is more cost-effective than stainless steel, making it a popular choice for various industrial and construction purposes. However, it's important to note that stainless steel offers superior corrosion resistance, making it more suitable for applications where exposure to moisture or chemicals is a concern. Ultimately, the choice between steel round bars, aluminum, or stainless steel depends on the specific requirements of the project.
- Q: Can steel round bars be used in the manufacturing of flanges?
- Yes, steel round bars can be used in the manufacturing of flanges. Flanges are typically used to connect pipes, valves, and other equipment in various industrial applications. While flanges can be made from different materials such as carbon steel, stainless steel, or alloy steel, steel round bars are commonly used due to their strength and durability. The round bars can be machined or forged into the desired flange shape and then further processed to meet specific requirements such as size, thickness, and flange face type. Steel round bars provide excellent mechanical properties and can withstand high pressures, making them suitable for use in flange manufacturing.
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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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