Hot Rolled Mild Square Steel Billet Q195, Q235
- 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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- Quality Product
- Order Online Tracking
- Timely Delivery
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Product Description:
OKorder is offering Hot Rolled Mild Square Steel Billet Q195, 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 Mild Square Steel Billet Q195, Q235 are ideal for structural applications and are widely used in the construction of buildings and bridges, and the manufacturing, petrochemical, and transportation industries.
-The Square Steel is normally used as structure steel.
-Row material for other structure steel like steel angles, channels, I-beams, H-beams, etc…
Product Advantages:
OKorder's Hot Rolled Mild Square Steel Billet Q195, Q235 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 Mild Square Steel Billet Q195, Q235:
-Standard: GB,
-Grade: Q195/Q235 or equivalent.
Chemical Composition:
-Chemical Composition. Q195
Standard | Grade | Element (%) | ||||
GB | Q195 | C | Mn | S | P | Si |
0.06~0.12 | 0.25~0.50 | ≤0.050 | ≤0.045 | ≤0.30 |
-Chemical Composition. Q235
Standard | Grade | Element (%) | ||||
GB | Q235B | C | Mn | S | P | Si |
0.12~0.20 | 0.30~0.70 | ≤0.045 | ≤0.045 | ≤0.30 |
Measures and Tolerances of Square Steel Bar:
(The section of Square Steel Bar)
-The length of a side and the theoretical weight of Square Steel.
Length of a side(a, mm) | Theoretical weight(kg/m) | Length of a side(a, mm) | Theoretical weight(kg/m) |
6 | 0.283 | 32 | 8.04 |
7 | 0.385 | *33 | 8.55 |
8 | 0.502 | 34 | 9.07 |
9 | 0.636 | *35 | 9.62 |
10 | 0.785 | 36 | 10.17 |
11 | 0.950 | 38 | 11.24 |
12 | 1.13 | 40 | 12.56 |
13 | 1.33 | 42 | 13.85 |
14 | 1.54 | 45 | 15.90 |
15 | 1.77 | 48 | 18.09 |
16 | 2.01 | 50 | 19.63 |
17 | 2.27 | 53 | 22.05 |
18 | 2.54 | *55 | 23.6 |
19 | 2.82 | 56 | 24.61 |
20 | 3.14 | *58 | 26.4 |
21 | 3.46 | 60 | 28.26 |
22 | 3.80 | 63 | 31.16 |
*23 | 4.15 | *65 | 33.17 |
24 | 4.52 | *68 | 36.3 |
25 | 4.91 | 79 | 38.49 |
26 | 5.30 | 75 | 44.16 |
*27 | 5.72 | 80 | 50.24 |
28 | 6.15 | 85 | 56.72 |
*29 | 6.60 | 90 | 63.59 |
30 | 7.06 | 95 | 70.85 |
*31 | 7.54 | 100 | 78.50 |
Notes:
1, The theoretical weights in the list, base on the density of 7.85 g/cm3.
2, The numbers with *mean that they are not regulars or we don’t offer them.
-The allowed tolerance of Square Steel:
Length of a side(mm) | Allowed Tolerance | ||
Group1 | Group2 | Group3 | |
5.5~7 | ±0.20 | ±0.30 | ±0.40 |
7~20 | ±0.25 | ±0.35 | ±0.40 |
20~30 | ±0.30 | ±0.40 | ±0.50 |
30~50 | ±0.40 | ±0.50 | ±0.60 |
60~80 | ±0.60 | ±0.70 | ±0.80 |
80~110 | ±0.90 | ±1.0 | ±1.1 |
110~150 | ±1.2 | ±1.3 | ±1.1 |
150~190 | ―― | ―― | ±2.0 |
190~250 | ―― | ―― | ±2.5 |
Packaging & Delivery of Hot Rolled Mild Square Steel Billet Q195, Q235:
-Packing Detail: The products can be packed in bundles by steel wires.
-Marks:
1, Tag marks: the tag marks will be tied up to each bundle of the products. The information is usually including supplier’s logo and name, product name, made in China, products’ specifications, the painted color and other information requested by customers.
2, Color marks: we will paint both ends of the bundles of these products to make sure that they are more evident. It’s will be more convenient for the customers to distinguish them at the destination port.
-Delivery Detail: 30~45 working days after receive buyer’s T.T. or L/C.
Transportation:
-The products can be delivered by bulk vessel or by container. As for container, products with the length of 6m will be loaded in 20’ container, with 9m or 12m, in 40’ container.
-The maximum quantity of loading of container is 25 tons.
-The products usually are transported to the nearest port from the production place.
Payment:
-Invoicing on theoretical weight or actual weight a s customer’s request.
-FOB, CFR or CIF.
FAQ:
Q1: Why buy Hot Rolled Mild Square Steel Billet Q195, Q235 from OKorder.com?
A1: All products offered byOKorder.com are carefully selected from China's most reliable manufacturing enterprises. Through its ISO certifications, OKorder.com adheres to the highest standards and a commitment to supply chain safety and customer satisfaction.
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: What is the normal tolerance of Hot Rolled Mild Square Steel Billet Q195, Q235?
A3: Normally 3%-5%, but we can also produce the goods according to the customers' requests.
- Q:
- Alloy steel billets can exhibit several surface defects that may arise during production, impacting the final product's quality and performance. Some typical defects seen in these billets are as follows: 1. Scale: Scale refers to a thin layer of oxide forming on the billet's surface during heating and cooling. It can occur due to exposure to air or the presence of impurities in the steel. Scale can have adverse effects on the surface finish and lead to corrosion. 2. Cracks: The billet's surface may develop cracks due to various factors, such as improper cooling, excessive stress, or mishandling. These cracks can compromise the billet's structural integrity, potentially resulting in failure during subsequent processing or in the final product. 3. Pits: Pits are small depressions or cavities found on the billet's surface. They can arise from impurities or the steel's reaction with the environment. Pits can impact the surface finish and serve as stress concentration points, leading to further damage or failure. 4. Laminations: Laminations refer to layers or sheets of non-metallic material within the billet. They can occur due to incomplete bonding during production or the presence of impurities in the steel. Laminations can weaken the billet, making it susceptible to failure under load. 5. Inclusions: Inclusions are non-metallic particles or impurities present in the steel. They may be introduced during production or already present in the raw materials. Inclusions can affect the steel's mechanical properties, reducing its strength, toughness, and ductility. 6. Decarburization: Decarburization involves the loss of carbon from the steel's surface. It can happen during the heating process or due to exposure to air. Decarburization can lead to reduced hardness and strength in the affected area. Detecting and addressing these surface defects in alloy steel billets is crucial for ensuring the production of high-quality and reliable products. Various inspection and testing methods, including visual inspection, ultrasonic testing, and magnetic particle inspection, can be employed to identify and assess these defects.
- Q:
- The manufacturing of cutting tools heavily relies on steel billets. These billets act as the primary material from which the cutting tool is forged or machined. Typically, steel billets are composed of high-quality steel alloys, which possess vital properties like hardness, toughness, and wear resistance that are necessary for cutting tools. To initiate the manufacturing process, the steel billets are heated to a specific temperature called the forging temperature. This temperature allows the steel to become malleable, making it easier to shape and mold into the desired cutting tool. The heated billets are then subjected to a forging process using specialized equipment, where they are struck or pressed to shape them into the desired form, such as drills, saws, or blades. Following the initial forging, the billets undergo further machining to refine their shape and dimensions. Machining processes like milling, turning, and grinding are employed to eliminate excess material, achieve precise dimensions required for the cutting tool, and create the desired cutting edge geometry. The quality of the steel billets used in the manufacturing process significantly impacts the performance and durability of the cutting tool. Steel billets with high carbon content and alloying elements like chromium, vanadium, or tungsten are often preferred as they enhance the hardness, strength, and wear resistance of the cutting tool. These properties are essential to ensure that the cutting tool can withstand the high forces, temperatures, and abrasive conditions it will encounter during use. In conclusion, steel billets serve as the foundation for manufacturing cutting tools. They provide the necessary raw material and properties required to create high-quality cutting tools that demonstrate exceptional performance, durability, and precision.
- Q:
- There are several different finishing processes used for steel billets to achieve the desired surface quality and dimensions. These processes include: 1. Hot rolling: This process involves passing the steel billets through a series of heated rollers to reduce their thickness and shape them into the desired profile. It can be used to produce a variety of finished products, such as bars, rods, and structural shapes. 2. Cold drawing: In this process, the steel billets are pulled through a series of dies at room temperature to reduce their cross-sectional area and improve their surface finish. Cold drawing is commonly used to produce high-quality steel bars and wires with precise dimensions and a smooth surface. 3. Peeling: Peeling is a machining process in which a thin layer of material is removed from the surface of the steel billets using a cutting tool. This process helps to improve the surface finish, remove any defects, and achieve tight dimensional tolerances. 4. Grinding: Grinding involves using an abrasive wheel or belt to remove material from the surface of the steel billets. It is commonly used to remove surface defects, such as scale and rust, and to achieve a smooth and uniform surface finish. 5. Polishing: Polishing is a finishing process that involves using abrasive materials, such as polishing compounds and buffing wheels, to create a smooth and reflective surface on the steel billets. It is often used to enhance the aesthetic appeal of the finished product and improve its resistance to corrosion. 6. Coating: Coating is a process in which a protective layer is applied to the surface of the steel billets to improve their resistance to corrosion and other environmental factors. Common coating methods include galvanizing, where a layer of zinc is applied to the surface, and painting, where a layer of paint or other protective material is applied. Overall, these finishing processes are essential in ensuring that steel billets meet the required specifications and standards for their intended applications. They help to improve the surface finish, dimensional accuracy, and overall quality of the finished steel products.
- Q:
- Steel billets are semi-finished products that are typically produced through continuous casting or by hot rolling methods. The sizes and dimensions of steel billets can vary depending on the specific requirements of the industry and the intended use of the billets. However, there are some common sizes and dimensions that are widely utilized in various applications. The most common size range for steel billets is between 100mm and 150mm square. These billets usually have a length of around 6 meters, although this can also vary depending on the specific needs of the customer or the manufacturing process. Additionally, round steel billets are also commonly produced with diameters ranging from 100mm to 200mm. In terms of weight, steel billets can range from a few hundred kilograms to several metric tons. The weight of a billet is determined by its length, cross-sectional area, and the density of the steel used. The majority of steel billets fall within the range of 1 to 5 metric tons. It is important to note that these dimensions and sizes can vary from one manufacturer to another, and different industries may have specific requirements for their steel billets. For example, the automotive industry may require larger or smaller billets depending on the type of parts being produced. In conclusion, the common sizes and dimensions of steel billets are typically between 100mm and 150mm square, with lengths of around 6 meters. Round billets can have diameters ranging from 100mm to 200mm. The weight of a steel billet can vary from a few hundred kilograms to several metric tons. However, it is essential to consider that these measurements can vary depending on the industry and customer requirements.
- Q:
- There are several types of steel billet rolling processes, including hot rolling, cold rolling, and warm rolling. Hot rolling involves heating the billet to a high temperature and then passing it through a series of rollers to shape it into the desired form. Cold rolling, on the other hand, is performed at room temperature and involves passing the billet through rollers to achieve a desired thickness or shape. Warm rolling is a combination of hot and cold rolling, where the billet is heated to a lower temperature compared to hot rolling but higher than room temperature. Each of these processes has its own advantages and is used for different applications in the steel industry.
- Q:
- Steel billets contribute to the overall durability of a structure by providing a strong and reliable foundation. These billets are made from high-quality steel and undergo a rigorous manufacturing process, resulting in a dense and uniform material. This ensures that the structure has excellent strength, toughness, and resistance to deformation, which helps it withstand various external forces and stresses. Additionally, the uniformity and consistency of steel billets make them less prone to defects and structural weaknesses, enhancing the overall durability and longevity of the structure.
- Q:
- There are several forging techniques used for steel billets, each offering unique advantages and producing different results. Some of the commonly used forging techniques for steel billets include: 1. Open Die Forging: This technique involves placing the steel billet between two flat dies and applying compressive force to shape it. Open die forging allows for a wide range of shapes to be formed, and it is often used for large and complex components. 2. Closed Die Forging: Also known as impression die forging, this technique uses shaped dies that contain impressions of the desired final shape. The steel billet is placed between the dies and compressed to conform to the die cavities. Closed die forging provides precise control over the shape and dimensions of the final product. 3. Roll Forging: In this technique, the steel billet is passed through two or more rotating rolls that exert compressive force to shape the material. Roll forging is commonly used for producing long cylindrical shapes such as bars, rods, and shafts. 4. Upset Forging: This technique involves compressing the steel billet axially to increase its cross-sectional area and reduce its length. Upset forging is often used to create thicker sections or to increase the diameter of the material. 5. Press Forging: Press forging utilizes hydraulic or mechanical presses to apply force to the steel billet, shaping it against the die. This technique allows for precise control over the forging process, making it suitable for producing components with intricate shapes or close tolerances. 6. Swaging: Swaging is a forging technique that involves reducing the diameter of a steel billet by applying radial compressive force using a series of dies. This process is commonly used to produce tapered or pointed components such as pins, bolts, or needles. Each of these forging techniques offers distinct advantages depending on the desired shape, size, and properties of the final product. The choice of forging technique is determined by factors such as part complexity, material properties, production volume, and cost considerations.
- Q:
- The specific requirements and industry standards may cause the standard size of a steel billet to fluctuate. Generally, these steel billets are rectangular and their dimensions usually fall within the range of 100mm x 100mm to 200mm x 200mm. The length of a steel billet also tends to vary, though it commonly measures approximately 6 meters. It is worth mentioning that these dimensions are not set in stone and can be tailored according to the intended usage and manufacturing procedure.
- Q:
- The manufacturing of rail tracks relies heavily on steel billets, which serve as a vital component. These billets, semi-finished steel pieces, are widely used as the initial material in various metalworking procedures. In the case of rail track production, the steel billets are subjected to high temperatures and subsequently passed through a sequence of rolling mills. During the rolling procedure, the steel billets gradually take shape and elongate, forming rail blooms that are characterized by their long and narrow sections. These rail blooms then undergo further processing and shaping through hot rolling, which involves passing them through multiple sets of rollers to achieve the desired dimensions and shape of the rail track. This process contributes to enhancing the mechanical properties of the steel, such as its strength and durability. Once the rail blooms have been shaped, they go through controlled cooling, a process in which they are cooled at a specific rate to optimize their microstructure and properties. This controlled cooling aids in reducing internal stresses and improving the overall quality of the rail tracks. Following the controlled cooling process, the rail blooms are subjected to straightening, cutting, and ultimately, finishing operations. These operations ensure that the rail tracks are straight, possess precise dimensions, and conform to the required standards and specifications. In conclusion, steel billets play a critical role in the manufacture of rail tracks. They are transformed into rail blooms through a series of rolling processes, and subsequently undergo further processing to produce high-quality rail tracks that are strong, durable, and capable of withstanding the heavy loads and constant use associated with railway transportation systems.
- Q:
- Steel billets are used in the manufacturing of agricultural machinery parts as they serve as the raw material for forging or casting processes. These billets are heated and shaped into specific forms such as gears, shafts, brackets, or other components required for the machinery. The strength and durability of steel make it an ideal choice for these parts, ensuring the equipment can withstand the demanding conditions of agricultural operations.
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