Round Bar 5mm-100mm GBQ195 Q235 Hot Rolled High Quality
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Product Description:
OKorder is offering high quality Round Bar 5mm-100mm GBQ195 Q235 Hot Rolled 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:
Deformed bar is widely used in buildings, bridges, roads and other engineering construction. Big to highways, railways, bridges, culverts, tunnels, public facilities such as flood control, dam, small to housing construction, beam, column, wall and the foundation of the plate, deformed bar is an integral structure material. With the development of world economy and the vigorous development of infrastructure construction, real estate, the demand for deformed bar will be larger and larger
Product Advantages:
OKorder's Round Bar 5mm-100mm GBQ195 Q235 Hot Rolled High Quality are durable, strong, and resist corrosion, exact size, regular package, chemical and mechanical properties are stable.
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:
Manufacture: Hot rolled
Grade: BS4449
Certificates: ISO, SGS, BV, CIQ
Diameter: 6mm,8mm,10mm,12mm,14mm,16mm,18mm,20mm,
22mm,25mm,28mm,32mm,36mm,40mm,50mm
Length: 6M, 9M,12M or as required
Packaging: Export packing, nude packing, bundled
Chemical Composition: (Please kindly find our chemistry of our material based on HRB500 as below for your information)
Grade | Technical data of the original chemical composition (%) | ||||||
C | Mn | Si | S | P | V | ||
HRB400 | ≤0.25 | ≤1.60 | ≤0.80 | ≤0.045 | ≤0.045 | 0.04-0.12 | |
Physical capability | |||||||
Yield Strength (N/cm²) | Tensile Strength (N/cm²) | Elongation (%) | |||||
≥400 | ≥570 | ≥14 | |||||
Theoretical weight and section area of each diameter as below for your information:
Diameter(mm) | Section area (mm²) | Mass(kg/m) | Weight of 12m bar(kg) |
6 | 28.27 | 0.222 | 2.664 |
8 | 50.27 | 0.395 | 4.74 |
10 | 78.54 | 0.617 | 7.404 |
12 | 113.1 | 0.888 | 10.656 |
14 | 153.9 | 1.21 | 14.52 |
16 | 201.1 | 1.58 | 18.96 |
18 | 254.5 | 2.00 | 24 |
20 | 314.2 | 2.47 | 29.64 |
22 | 380.1 | 2.98 | 35.76 |
25 | 490.9 | 3.85 | 46.2 |
28 | 615.8 | 4.83 | 57.96 |
32 | 804.2 | 6.31 | 75.72 |
36 | 1018 | 7.99 | 98.88 |
40 | 1257 | 9.87 | 118.44 |
50 | 1964 | 15.42 | 185.04 |
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: What makes stainless steel stainless?
A2: Stainless steel must contain at least 10.5 % chromium. It is this element that reacts with the oxygen in the air to form a complex chrome-oxide surface layer that is invisible but strong enough to prevent further oxygen from "staining" (rusting) the surface. Higher levels of chromium and the addition of other alloying elements such as nickel and molybdenum enhance this surface layer and improve the corrosion resistance of the stainless material.
Q3: Can stainless steel rust?
A3: Stainless does not "rust" as you think of regular steel rusting with a red oxide on the surface that flakes off. If you see red rust it is probably due to some iron particles that have contaminated the surface of the stainless steel and it is these iron particles that are rusting. Look at the source of the rusting and see if you can remove it from the surface.
- Q: What are the quality control measures for steel round bars?
- The quality control measures for steel round bars typically include visual inspection, dimensional checks, chemical composition analysis, mechanical testing, and surface finish evaluation. These measures help ensure that the round bars meet the required specifications and standards, guaranteeing their strength, durability, and overall quality.
- Q: What is the difference between hot rolled and cold drawn steel round bars?
- Hot rolled steel round bars undergo the process of heating a steel billet or ingot at a high temperature and subsequently rolling it into the desired shape. This process yields a rougher surface finish and a greater diameter tolerance in comparison to cold drawn steel round bars. The usage of hot rolled bars is frequently found in areas where strength and durability hold significance, such as in construction and manufacturing. On the contrary, cold drawn steel round bars are created by pulling a hot rolled bar through a die at room temperature, leading to a smoother surface finish and tighter diameter tolerances. This procedure also enhances the mechanical properties of the steel, including its strength and hardness. Cold drawn bars are often employed in scenarios where precision and a high-quality surface finish are prerequisites, like in the production of shafts, bolts, and precision components. To summarize, the principal disparities between hot rolled and cold drawn steel round bars encompass the surface finish, diameter tolerance, and mechanical properties. Hot rolled bars bear a rougher surface finish, larger diameter tolerances, and are typically utilized in contexts where strength and durability are paramount. Cold drawn bars possess a smoother surface finish, tighter diameter tolerances, and are commonly employed in situations necessitating precision and a high-quality surface finish.
- Q: Are steel round bars suitable for bearing applications?
- In general, steel round bars are suitable for bearing applications. Steel possesses qualities such as strength, durability, and resistance to wear and tear, which make it an ideal material for bearing purposes. Manufacturers often utilize steel round bars in the production of bearings because they have the ability to carry heavy loads and endure rotational forces. Furthermore, steel round bars can undergo heat treatment to increase their hardness and enhance their resistance to friction and corrosion, making them even more suitable for bearing applications. Nevertheless, it is crucial to take into account the specific requirements and conditions of the bearing application to ensure that the chosen steel round bars meet the necessary standards and specifications.
- Q: Are steel round bars resistant to chemicals?
- The resistance of steel round bars to chemicals can vary depending on the specific steel type and the chemicals involved. Stainless steel round bars are well-known for their exceptional resistance to a wide range of chemicals, including acids, alkalis, and various organic compounds. This is because stainless steel contains high levels of chromium, which creates a protective oxide layer on the surface, preventing corrosion and chemical attacks. However, not all steel round bars possess the same level of chemical resistance. Carbon steel round bars, for example, are more prone to corrosion and chemical attacks compared to stainless steel. Corrosive chemicals, especially in highly corrosive environments, can affect carbon steel and cause damage. In such cases, it may be necessary to use additional protective measures, such as coatings or treatments, to enhance the chemical resistance. To summarize, stainless steel round bars provide excellent chemical resistance, whereas carbon steel round bars may require extra precautions to prevent chemical corrosion. When assessing the chemical resistance of steel round bars, it is crucial to consider the specific steel type, the type of chemical, and the environmental conditions.
- 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 high-temperature applications?
- Yes, steel round bars are suitable for high-temperature applications. Steel is known for its excellent strength and heat resistance, making it a reliable choice for various industries that require materials capable of withstanding elevated temperatures. Steel round bars can maintain their structural integrity and mechanical properties even under extreme heat conditions, making them a popular choice for applications such as furnace components, heat exchangers, and high-temperature machinery.
- Q: What is the minimum tensile strength of steel round bars?
- The specific grade of steel being used can cause variations in the minimum tensile strength of steel round bars. Nevertheless, a majority of steel round bars typically possess a minimum tensile strength of approximately 400 megapascals (MPa) or 58,000 pounds per square inch (psi). It is worth mentioning that this represents the bare minimum, as various grades of steel can possess higher tensile strengths to meet specific applications or requirements.
- Q: How do you calculate the load capacity of a steel round bar?
- The load capacity of a steel round bar can be calculated using its cross-sectional area and the material's yield strength. The formula for calculating load capacity is Load Capacity = Cross-sectional Area × Yield Strength.
- Q: How do you prevent scaling of steel round bars during heat treatment?
- To prevent scaling of steel round bars during heat treatment, there are several measures that can be taken: 1. Use a protective atmosphere: Heat treatment can be carried out in a controlled atmosphere, such as in a furnace with a controlled gas environment. This prevents the exposure of the steel bars to oxygen, which is the primary cause of scaling. 2. Apply a protective coating: Coating the steel round bars with a protective substance, such as a refractory material or a thin layer of paint, can help prevent scaling. This coating acts as a barrier between the steel and the oxygen in the atmosphere, reducing the chances of scaling. 3. Use a reducing atmosphere: Instead of using a normal atmospheric environment, heat treatment can be conducted in a reducing atmosphere. This involves introducing gases like hydrogen or nitrogen into the furnace, which react with the oxygen to create a more controlled environment and prevent scaling. 4. Control the heating rate: Rapid heating can lead to increased scaling due to the sudden exposure of the steel to high temperatures. By controlling the heating rate, such as using a gradual ramp-up in temperature, scaling can be minimized. 5. Limit the exposure time: Minimizing the time that the steel round bars are exposed to high temperatures can help prevent scaling. This can be achieved by optimizing the heat treatment process and ensuring that the bars are not held at elevated temperatures for longer than necessary. 6. Clean the surface before heat treatment: Prior to heat treatment, it is crucial to remove any contaminants or residues from the surface of the steel round bars. This can be done through mechanical cleaning methods like wire brushing or chemical cleaning techniques, ensuring a clean surface that is less prone to scaling. By implementing these preventative measures, the scaling of steel round bars during heat treatment can be effectively minimized, leading to improved quality and performance of the treated bars.
- Q: Are more bars used in high-rise buildings?
- Look at the architectural design requirements and seismic grade, light steel reinforcement is mainly stirrups, columns, beams, shear walls generally use thread steel, plate bars and distribution bars are generally cold and twisted steel bars
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Round Bar 5mm-100mm GBQ195 Q235 Hot Rolled High Quality
- Ref Price:
-
- Loading Port:
- China Main Port
- Payment Terms:
- TT or LC
- Min Order Qty:
- -
- Supply Capability:
- -
OKorder Service Pledge
OKorder Financial Service
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