Hot Rolled GB Standard Round Steel Bar Q235, SAE1020
- Ref Price:
-
- Loading Port:
- Shanghai
- Payment Terms:
- TT or LC
- Min Order Qty:
- 25 m.t.
- Supply Capability:
- 200000 m.t./month
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Product Description:
OKorder is offering Hot Rolled GB Standard Round Steel Bar Q235, SAE1020 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 GB Standard Round Steel Bar Q235, SAE1020 are ideal for structural applications and are widely used in the construction of buildings and bridges, and the manufacturing, petrochemical, and transportation industries. Carbon steel round bar is the most common form of steel because its price is relatively low while it provides material properties that are acceptable for many applications, more so than iron. It is often used when large quantities of steel are needed, for example as structural steel. The density of this product is approximately 7.85g/cm³ and the young's modulus, like all steels.
Product Advantages:
OKorder's Hot Rolled GB Standard Round Steel Bar Q235, SAE1020 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
Specifications of Hot Rolled GB Standard Round Steel Bar Q235, SAE1020
1. Grade: Q235, SS400, S235JR, A36
2. Sizes: Diameter: 6mm-150mm; Length: 6m, 9m, 12m or as customer’s request
3. Type: Mild steel; Low carbon steel
4. Shape: Round bar, solid bar of steel with circular section
5. Technique: Hot rolled or cold drawn
6. Mass: Mass(kg/m) = Diameter(mm)×Diameter(mm)×0.00617
Steel Type | Maximum forging temperature (°F / °C) | Burning temperature (°F / °C) |
1.5% carbon | 1920 / 1049 | 2080 / 1138 |
1.1% carbon | 1980 / 1082 | 2140 / 1171 |
0.9% carbon | 2050 / 1121 | 2230 / 1221 |
0.5% carbon | 2280 / 1249 | 2460 / 1349 |
0.2% carbon | 2410 / 1321 | 2680 / 1471 |
3.0% nickel steel | 2280 / 1249 | 2500 / 1371 |
3.0% nickel–chromium steel | 2280 / 1249 | 2500 / 1371 |
5.0% nickel (case-hardening) steel | 2320 / 1271 | 2640 / 1449 |
Packaging & Delivery of Hot Rolled GB Standard Round Steel Bar Q235, SAE1020
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 Hot Rolled GB Standard Round Steel Bar Q235, SAE1020
1. 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.
2. EAF+LF+VD+ Forged+ Heat Treatment
FAQ:
Q1: How soon can we receive the product after purchase?
A1: 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.
Q2: How do we guarantee the quality of our products?
A2: 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.
Q3: Can fit in the containers of 20fts the steel beams of 6M?
A3: No proble, we can put them into the containers in the form sideling.
- Q:What is the yield strength to tensile strength ratio of a steel round bar?
- The yield strength to tensile strength ratio of a steel round bar is typically around 0.85.
- 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 the dimensions and properties of the bar. The moment of inertia is a measure of an object's resistance to changes in rotation. The formula for calculating the moment of inertia of a solid cylindrical object, such as a round bar, is given by: I = (π/4) * D^4, where I is the moment of inertia and D is the diameter of the bar. First, measure the diameter of the steel round bar using a caliper or ruler. Make sure to measure the diameter at its widest point, which is typically the center. Next, plug the measured diameter into the formula and calculate the moment of inertia. Remember to use the appropriate units for diameter, such as inches or millimeters, to ensure consistency with the formula. For example, let's say the diameter of the steel round bar is 2 inches. Plugging this value into the formula: I = (π/4) * (2 inches)^4 = (π/4) * 16 inches^4 = 4π inches^4. So, the moment of inertia of the steel round bar with a diameter of 2 inches is 4π inches^4. It is important to note that this formula assumes a solid cylindrical shape without any variations in diameter or holes. If the round bar has any variations in diameter or is hollow, the moment of inertia calculation becomes more complex and requires additional considerations.
- Q:What is the difference between a rough turned and a hot rolled steel round bar?
- A rough turned steel round bar and a hot rolled steel round bar differ in their manufacturing processes and resulting properties. A rough turned steel round bar is produced by first heating a steel billet or ingot to a high temperature and then subjecting it to rough machining processes. The rough machining involves removing excess material from the surface of the bar to achieve a desired size and shape. This process results in a slightly smoother surface compared to the hot rolled bar, but it may still have some minor imperfections. Rough turned bars are often used in applications where a smoother surface finish is required, such as in machining operations. On the other hand, a hot rolled steel round bar is manufactured by heating a steel billet or ingot to extremely high temperatures and then passing it through a series of rolling mills. The hot rolling process involves reducing the thickness and increasing the length of the steel bar by compressing it between a set of rotating rolls. As a result, hot rolled bars have a rough, scaled surface with variations in diameter along their length. This textured surface provides excellent adherence for paint, coatings, or further processing. Hot rolled bars are commonly used in construction, manufacturing, and structural applications where mechanical properties such as strength and durability are important. In summary, the main difference between a rough turned and a hot rolled steel round bar lies in their manufacturing processes and surface finish. Rough turned bars undergo rough machining to achieve a smoother surface, while hot rolled bars are formed through high-temperature rolling, resulting in a rough, scaled surface. The choice between these two types of bars depends on the specific application and the desired properties, such as surface finish, strength, and adherence.
- Q:What is the tolerance for diameter and length of steel round bars?
- The tolerance for diameter and length of steel round bars can vary depending on the specific industry standards and requirements. In general, tolerances for diameter are typically specified in terms of a plus or minus deviation from the nominal diameter. For example, a tolerance of +/- 0.005 inches means that the actual diameter of the steel round bar can vary by up to 0.005 inches from the nominal diameter. Similarly, tolerances for length are also specified in terms of a plus or minus deviation from the nominal length. These tolerances can be expressed as a percentage or an absolute value. For instance, a tolerance of +/- 1% or +/- 0.5 inches means that the actual length of the steel round bar can vary by up to 1% of the nominal length or 0.5 inches, whichever is greater. It is important to note that different industries may have different tolerance requirements based on the specific applications and intended use of the steel round bars. Therefore, it is crucial to refer to the applicable industry standards or consult with the manufacturer or supplier to determine the exact tolerance specifications for diameter and length of steel round bars in a particular context.
- Q:Which is hard, round steel or screw steel?
- Round bar is divided into three parts: hot rolling, forging and cold drawing. Standard Specification for hot rolled round steel is 5.5-250 mm. Of them: 5.5-25 mm small round bars are mostly supplied by straight strips. They are used as reinforcing bars, bolts and various mechanical parts. They are more than 25 millimeters of round steel. They are mainly used in the manufacture of mechanical parts or seamless steel tube billets
- Q:Can steel round bars be threaded or machined?
- Yes, steel round bars can be threaded or machined. Threading refers to the process of creating internal or external threads on the surface of a steel round bar, allowing it to be connected or fastened to other components. Machining, on the other hand, involves using various cutting tools and techniques to remove material from the steel round bar, shaping it into a desired form or size. Both threading and machining can be performed on steel round bars to meet specific requirements and applications, such as creating threaded rods, bolts, or custom-designed components.
- Q:What are the applications of steel round bars?
- Due to their inherent strength, durability, and versatility, steel round bars find extensive applications across various industries. They play a crucial role in: 1. Construction: Steel round bars are widely used in the construction industry for structural purposes. They provide stability and safety in building columns, beams, and frames due to their high strength-to-weight ratio. 2. Manufacturing: The manufacturing sector heavily relies on steel round bars for fabricating components and machinery. They are essential in producing gears, shafts, axles, and other machine parts that demand precision and strength. 3. Automotive industry: Steel round bars are significant in manufacturing crankshafts, connecting rods, suspension components, and other automobile parts. They contribute to the strength and reliability of vehicles. 4. Oil and gas industry: The oil and gas sector utilizes steel round bars in manufacturing drill bits, valves, pipes, and equipment exposed to harsh environmental conditions. These bars offer high strength and corrosion resistance. 5. Aerospace industry: The aerospace industry heavily depends on steel round bars for their high strength and lightweight properties. They are used in aircraft components such as landing gear, engine parts, and structural elements. 6. Shipbuilding: Steel round bars are commonly employed in shipbuilding due to their excellent strength and corrosion resistance. They are used in constructing ship frames, hulls, and critical components that require durability in harsh marine environments. 7. Infrastructure projects: Steel round bars are extensively used in infrastructure projects like bridges, tunnels, and railways. They provide the necessary strength and stability to support heavy loads and ensure the structural integrity of these projects. 8. Furniture and interior design: Steel round bars also find applications in the furniture and interior design industry. They are commonly used in the construction of chairs, tables, shelves, and other furniture pieces due to their sleek appearance, durability, and ease of molding. In conclusion, steel round bars have a wide range of applications in various industries, contributing to the development of robust and reliable structures, machinery, and equipment.
- Q:How do steel round bars perform under impact or shock loading?
- Steel round bars exhibit exceptional performance when subjected to impact or shock loading. Their high strength and toughness enable them to withstand sudden forces, preventing deformation or failure. The inherent properties of steel, including its hardness and ductility, contribute to its capacity to absorb and distribute energy throughout the material, thereby minimizing the impact on the structure. When impacted or subjected to shock loading, steel round bars undergo plastic deformation, allowing them to absorb and dissipate applied energy without fracturing. This ability to absorb energy is vital in various industries, such as construction, automotive, and machinery, where components frequently experience dynamic loads. Furthermore, steel's excellent fatigue resistance further enhances its performance under impact or shock loading. Even when repeatedly exposed to impacts, steel round bars can endure cyclic loading without experiencing significant degradation in their mechanical properties. Moreover, steel round bars can be further improved through various heat treatment processes, such as quenching and tempering, which refine the steel's microstructure, resulting in increased strength, toughness, and hardness. In conclusion, steel round bars exhibit remarkable performance when subjected to impact or shock loading. Their high strength, toughness, and energy absorption capabilities make them reliable and widely utilized in applications where sudden forces or dynamic loads are anticipated.
- Q:Can steel round bars be hardened through heat treatment?
- Yes, steel round bars can be hardened through heat treatment. Heat treatment processes such as quenching and tempering can be used to change the microstructure of the steel, resulting in increased hardness and strength.
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Hot Rolled GB Standard Round Steel Bar Q235, SAE1020
- Ref Price:
-
- Loading Port:
- Shanghai
- Payment Terms:
- TT or LC
- Min Order Qty:
- 25 m.t.
- Supply Capability:
- 200000 m.t./month
OKorder Service Pledge
OKorder Financial Service
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