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: Can steel round bars be galvanized?
- Yes, steel round bars can be galvanized. Galvanizing is a process in which a protective zinc coating is applied to the surface of steel to prevent corrosion. This process can be applied to various steel products, including round bars. Galvanizing steel round bars not only enhances their resistance to corrosion but also improves their durability and longevity. The galvanizing process involves immersing the round bars in a bath of molten zinc, which adheres to the steel and forms a protective layer. This layer acts as a barrier, shielding the steel from moisture, chemicals, and other corrosive elements. As a result, galvanized steel round bars are commonly used in outdoor applications, such as construction, fencing, and marine environments, where they are exposed to harsh conditions.
- Q: What are the safety precautions when handling steel round bars?
- When handling steel round bars, there are several important safety precautions that should be followed to minimize the risk of accidents or injuries. 1. Personal Protective Equipment (PPE): Always wear appropriate PPE such as safety goggles, gloves, steel-toed boots, and a hard hat. These protective gears help protect against potential hazards such as flying debris, sharp edges, and heavy objects. 2. Proper Lifting and Carrying Techniques: Steel round bars can be heavy and cumbersome, so it is important to use proper lifting techniques to avoid strain or injury. Lift with your legs, keeping your back straight, and avoid twisting or jerking motions. If the bars are too heavy to lift alone, ask for assistance or use mechanical aids like forklifts or cranes. 3. Secure Storage and Stacking: When storing or stacking steel round bars, ensure they are properly secured and organized. Use appropriate storage racks or A-frames to prevent them from tipping over or falling, which could cause serious injuries. If stacking multiple bars, use spacers or shims to maintain stability. 4. Avoid Sharp Edges: Steel round bars may have sharp edges or burrs, so be cautious when handling them. Wear gloves to protect your hands and avoid dragging or sliding the bars, as this can cause cuts or abrasions. 5. Proper Handling Techniques: When moving steel round bars, always maintain a firm grip and be aware of your surroundings. Do not swing or throw the bars, as they could hit someone or cause damage. Instead, walk slowly and steadily, ensuring clear paths and ample space to maneuver. 6. Inspection for Defects: Before using steel round bars, inspect them for any defects or damage. Look for cracks, dents, or deformities that could compromise their structural integrity. If any issues are found, do not use the bars and report them to a supervisor or quality control personnel. 7. Fire Safety: Steel round bars are highly flammable when exposed to extreme heat or sparks. Therefore, avoid working near open flames or hot work areas. Keep fire extinguishers nearby and ensure everyone is trained in fire safety protocols. By following these safety precautions, you can significantly reduce the risks associated with handling steel round bars and create a safer work environment.
- Q: Can steel round bars be used in the manufacturing of electrical components?
- Yes, steel round bars can be used in the manufacturing of electrical components. Steel is a commonly used material in various industries due to its strength, durability, and electrical conductivity. Steel round bars can be shaped, cut, and machined to form different components such as connectors, terminals, and housings for electrical devices. Additionally, steel's corrosion resistance and affordable cost make it a practical choice for manufacturing electrical components.
- Q: How do you determine the appropriate steel grade for a specific application?
- To determine the appropriate steel grade for a specific application, it is necessary to have a comprehensive understanding of the application's requirements and the properties of different steel grades. The following steps should be considered: 1. Begin by clearly defining the specific requirements of the application, such as load-bearing capacity, corrosion resistance, temperature resistance, and durability. Take into account factors such as the environment the steel will be exposed to, the expected stress levels, and any specialized characteristics needed. 2. Research the various steel grades available in the market once the application requirements are understood. Identify steel grades known for possessing the desired properties required for the specific application. Consult industry standards, expert opinions, and available resources to gain insights into different steel grades and their performance in similar applications. 3. Analyze the physical, mechanical, and chemical properties of the steel grades under consideration. Evaluate key properties such as strength, ductility, toughness, hardness, corrosion resistance, weldability, and formability. Compare these properties with the application requirements to determine which steel grades align best with the specific needs. 4. Evaluate the cost and availability of the steel grades that meet the application requirements. Take into account factors such as the initial cost, maintenance costs, and availability of the steel grade in the required form and quantity. This step ensures that the chosen steel grade is not only suitable but also feasible from an economic perspective. 5. Seek advice from experts, such as metallurgists or engineers, to gain valuable insights into selecting the appropriate steel grade. Their expertise and experience can help weigh the pros and cons of different steel grades, identify potential challenges, and suggest alternatives or modifications if necessary. 6. If feasible, conduct testing or trials using samples of the selected steel grade to assess its performance under real-world conditions. This step can help validate the suitability of the chosen steel grade and identify any unforeseen issues or areas for improvement. By carefully considering the application requirements, researching steel grades, evaluating material properties, considering cost and availability, seeking expert advice, and conducting testing and trials, one can effectively determine the appropriate steel grade for a specific application.
- Q: How do you calculate the moment of inertia of a steel round bar?
- To calculate the moment of inertia of a steel round bar, you need to know its mass and the radius of gyration. The moment of inertia can be determined using the formula I = (1/4) * π * r^4, where I represents the moment of inertia and r is the radius of the round bar.
- Q: What are the different types of steel round bar alloys for improved corrosion resistance?
- Improved corrosion resistance is associated with various types of steel round bar alloys. Stainless steel, weathering steel, and duplex stainless steel are among the commonly utilized alloys. Stainless Steel, for instance, contains a minimum of 10.5% chromium. As a result, it forms a thin layer of chromium oxide on the steel surface, serving as a protective barrier against corrosion. This protective layer significantly minimizes the likelihood of rust and other forms of corrosion. Different grades of stainless steel, such as 304 and 316, offer varying degrees of corrosion resistance based on the specific application. Weathering Steel, also known as Corten steel, acquires a rust-like appearance when exposed to the weather. This unique characteristic aids in its resistance against atmospheric corrosion. Additionally, the inclusion of copper, chromium, and nickel further enhances its corrosion resistance, allowing it to withstand harsh environmental conditions without requiring painting. Duplex Stainless Steel, on the other hand, combines austenitic and ferritic stainless steels. Its remarkable corrosion resistance is attributed to its high content of chromium and molybdenum. This type of alloy is particularly adept at combating localized corrosion, including pitting and crevice corrosion. Consequently, it finds great utility in aggressive environments like the marine and chemical industries. It is essential to recognize that the selection of a suitable steel round bar alloy for enhanced corrosion resistance hinges upon the specific requirements of the application and the surrounding environmental conditions. Seeking guidance from a materials engineer or corrosion specialist can prove beneficial in determining the most appropriate alloy for a given situation.
- Q: How do I calculate the length of a steel round bar based on weight?
- To calculate the length of a steel round bar based on its weight, you need to know the density of steel and the weight of the bar. First, determine the density of steel, which is typically around 7850 kilograms per cubic meter. This value may vary depending on the type and grade of steel being used. Next, convert the weight of the steel round bar to kilograms if it is given in a different unit. For example, if the weight is given in pounds, you can multiply it by 0.4536 to convert it to kilograms. Once you have the weight in kilograms, you can use the formula: Length = Weight / (Density * π * (Diameter/2)^2) In this formula, the diameter should be in meters, so if it is given in a different unit, convert it accordingly. The symbol "π" represents the mathematical constant pi, which is approximately equal to 3.14159. By plugging in the values into the formula, you can calculate the length of the steel round bar. Remember to use consistent units throughout the calculation to obtain accurate results. It's important to note that this calculation assumes the round bar has a uniform diameter along its length. If the bar has varying diameters or irregularities, the calculation may provide an approximation rather than an exact length.
- Q: How can steel round bars be protected against corrosion?
- Steel round bars can be protected against corrosion through various methods such as applying a protective coating, galvanizing, using corrosion inhibitors, or implementing cathodic protection. These techniques form a barrier between the steel surface and corrosive elements, preventing or slowing down the process of corrosion.
- Q: How are steel round bars used in the oil and gas industry?
- The oil and gas industry extensively utilizes steel round bars for a multitude of purposes. Primarily, these bars are crucial in drilling operations as they are employed in the production of drill bits and drill collars, which are essential components of drilling equipment. Given the substantial levels of stress and wear experienced during drilling, steel round bars provide the necessary strength and durability to withstand such conditions. Moreover, steel round bars are utilized in the construction of oil and gas pipelines. These pipelines are responsible for the long-distance transportation of crude oil, natural gas, and other petroleum products. By utilizing steel round bars in the manufacturing of these pipes, their strength and resistance to corrosion are guaranteed, enabling them to endure the harsh operating conditions. Additionally, steel round bars find application in the construction of oil and gas storage tanks and pressure vessels. These containers are employed for the storage and transportation of petroleum products and gases under high pressure. Steel round bars ensure the required structural integrity and strength, thereby ensuring the safe storage and transportation of these substances. Furthermore, steel round bars are involved in the fabrication of various other equipment that is utilized in the oil and gas industry, including valves, fittings, pumps, and compressors. These components are pivotal for the efficient and safe operation of oil and gas production facilities. To summarize, steel round bars play a vital role in the oil and gas industry by being used in drilling operations, pipeline construction, storage tank fabrication, and the manufacturing of various equipment. Their exceptional strength, durability, and resistance to corrosion make them an ideal choice for these demanding applications, ultimately guaranteeing the efficient and safe extraction, transportation, and storage of oil and gas.
- Q: Can steel round bars be used in the electronics industry?
- Although steel round bars are not commonly used in the electronics industry due to their limited applications and low electrical conductivity, they can still find some utility in this field. Instead of being utilized in electronic components or circuitry, materials with high electrical conductivity like copper or aluminum are typically preferred. These materials allow for efficient transmission of electrical signals and minimize losses. Nonetheless, steel round bars can serve various purposes in the electronics industry. They can be employed for structural functions, providing support or reinforcement to electronic equipment or enclosures. Additionally, they can be utilized in the manufacturing of different mechanical components, connectors, or fixtures used in electronics assembly. Furthermore, steel round bars can be applied in the construction of equipment racks, shelves, or storage systems for electronic devices. In summary, although steel round bars are not directly involved in the electrical aspects of the electronics industry, they still play crucial roles in terms of structural support and mechanical components.
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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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