Hot rolled Carbon Steel Billets Square Billets
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 1000 m.t.
- Supply Capability:
- 16021 m.t./month
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Specification
Price term:
FOB/CIF/ CFR according to clients requirements
Payment terms:
100%Irrevercable L/C at sight or T/T
Length:
6~12 meters
Size:
100mm to 165mm
Grade:
Q195/Q215/Q235/Q275
Steel billet :
Rectangular billet continuous casting billet and mainly general carbon steel, low carbon low silicon cold-rolled material, high quality carbon structural steel, high strength low alloy steel, special steel, etc.
The billet is mainly divided into two kinds from the shape:
Slab: cross section width and height of the ratio of the larger, mainly used for rolling plate.
Gade:
Standard | C(%) | Mn(%) | S(%) | P(%) | Si(%) |
Q195 | ≤0.12 | ≤0.50 | ≤0.040 | ≤0.035 | ≤0.30 |
Q235 | ≤0.20 | ≤1.40 | ≤0.045 | ≤0.045 | ≤0.35 |
Q275 | ≤0.22 | ≤1.50 | ≤0.045 | ≤0.045 | ≤0.35 |
20MnSi | 0.17-0.25 | 1.2-1.6 | ≤ 0.050 | ≤ 0.050 | 0.40-0.80 |
3SP | 0.14-0.22 | 0.40-0.85 | ≤ 0.050 | ≤ 0.040 | 0.05-0.15 |
5SP | 0.28-0.37 | 0.50-1.00 | ≤ 0.050 | ≤ 0.040 | 0.15-0.30 |
Other Specifications
Squar Tolerance: ±4
Length Tolerance: +100mm
Romboidity/Difference Diagonals: no more than 0.7%
Camber: no more than 1.5%(%)
Twist: no more than 3 degrees per 1 meter length
Our Advantage
* Professional Personnel of Steel Trading
* Strong Steel Industry Background
* Conveniently Geographic Location
Our Commitment
* Sincere, Practical, Efficient and Developing
* High Quality Steel Production
* Competitive Price and Timely Delivery
Packing :
Within 30 days
1.Standard export package
2.In bundles with steel strips
3.As the requirements of the customers
FAQ:
Q: How to get quotation?
A: When we receive your detailed enquiry, we will set the best price based on standard,
steel grade, outer diameter, wall thickness, quantity, country.
And we will send quotation to your mailbox.
Q:How to guarantee the quality of the products?
A:We have established the international advanced quality management system,every link from raw material
to final product we have strict quality test;We resolutely put an end to unqualified products flowing into the market.
At the same time, we will provide necessary follow-up service assurance.
Q:How long can we receive the product after purchase?
A :In the purchase of product within three working days, We will arrange the factory delivery as soon as possible.
The pecific time of receiving is related to the state and position of customers.
- Q:What are the main disadvantages of using steel billets?
- Using steel billets in various industries comes with several disadvantages. To begin with, one major drawback of steel billets is their high cost. The manufacturing process of steel billets is complex, involving the melting and casting of steel, which can be quite expensive. Consequently, this cost is then passed on to the end product, making it less affordable for consumers. Moreover, steel billets tend to be heavy and bulky, making transportation and handling challenging. The weight and size of steel billets contribute to logistical difficulties in the supply chain, leading to increased costs and potential delays. Another disadvantage is the limited availability of steel billets. Steel production requires a substantial amount of resources and energy, and the availability of raw materials can be restricted, resulting in potential disruptions in the supply chain. This scarcity can have a negative impact on industries heavily reliant on steel billets for their operations. Furthermore, steel billets have limited shape flexibility. They are typically produced in standardized sizes and shapes, making customization for specific design requirements difficult. This lack of flexibility can be a significant drawback for industries that necessitate intricate and unique shapes for their products. Moreover, steel billets are susceptible to corrosion if not properly treated. Exposure to moisture and certain environments can lead to rust and degradation, reducing the lifespan and durability of products made from steel billets. Regular maintenance and anti-corrosion treatments are essential to mitigate this disadvantage. Lastly, the production of steel billets has a significant environmental impact. The manufacturing process emits greenhouse gases and consumes substantial amounts of energy and water. These environmental concerns have resulted in increased scrutiny and regulations on steel production, thereby adding extra costs and complexities to the use of steel billets. In conclusion, while steel billets offer advantages in terms of strength and durability, they also come with several drawbacks. These include high costs, transportation challenges, limited availability, lack of shape flexibility, susceptibility to corrosion, and environmental impact. Industries must carefully consider these disadvantages when evaluating the use of steel billets in their operations.
- Q:How are steel billets used in the manufacturing of packaging equipment?
- Packaging equipment relies heavily on steel billets as a vital element in its manufacturing process. These billets serve as the primary material for producing diverse parts and components crucial to the functioning of packaging machinery. To begin with, steel billets are typically employed in the fabrication of packaging equipment frames and structures. The robust nature and enduring quality of steel make it an ideal selection for constructing a sturdy framework that provides support to the entire machine. This guarantees that the packaging equipment can endure the demands of continuous operation and heavy loads. Furthermore, steel billets are also instrumental in the production of significant components such as gears, shafts, and rollers. These components play a pivotal role in ensuring the smooth operation and rotation required for efficient product packaging. Steel's exceptional mechanical properties, including high tensile strength and resistance to wear and tear, render it suitable for these critical parts. Additionally, steel billets are frequently utilized in the manufacturing of cutting and forming tools employed in packaging equipment. These tools are responsible for shaping and cutting various materials like cardboard or plastic to create packaging containers or wrap products. The hardness of steel and its ability to maintain sharp edges make it an ideal material for crafting these tools, thus ensuring precise and efficient packaging operations. In conclusion, the significance of steel billets in the manufacturing of packaging equipment cannot be overstated, as they are instrumental in creating the frames, components, and tools necessary for the efficient and reliable operation of packaging machinery. The strength, durability, and versatility of steel billets make them the preferred choice in the packaging industry.
- Q:What are the different types of steel billet casting defects?
- There are several different types of steel billet casting defects that can occur during the casting process. These defects can have varying degrees of severity and can impact the quality and performance of the final product. Some of the most common types of steel billet casting defects include: 1. Shrinkage: Shrinkage defects occur when there is inadequate feeding of liquid metal into the solidifying billet. This can result in voids or cavities within the billet, leading to reduced strength and potential failure under stress. 2. Porosity: Porosity defects are characterized by the presence of small gas bubbles or voids within the billet. These defects can weaken the material, reduce its density, and impair its performance in terms of mechanical properties such as tensile strength and ductility. 3. Inclusions: Inclusions are foreign substances that become trapped within the billet during the casting process. These can include non-metallic particles, oxides, or impurities. Inclusions can negatively impact the mechanical properties, such as reducing ductility and increasing brittleness. 4. Surface defects: Surface defects can occur during the casting process and can include issues such as cracks, scabs, or uneven surfaces. These defects can affect the appearance of the billet and may also impact its structural integrity. 5. Segregation: Segregation defects occur when there is an uneven distribution of alloying elements within the billet. This can result in areas of varying composition, which can lead to inconsistencies in mechanical properties and reduced overall performance. 6. Hot tears: Hot tears are cracks that occur in the billet during solidification due to thermal stresses. These defects can weaken the material and result in reduced strength and failure under stress. 7. Misruns: Misruns occur when the liquid metal does not completely fill the mold cavity, resulting in an incomplete billet. This defect can lead to reduced dimensions, poor surface finish, and compromised mechanical properties. It is important to identify and address these steel billet casting defects to ensure the production of high-quality and reliable steel products. Various techniques such as proper mold design, controlling casting parameters, and process optimization can be employed to minimize these defects and improve the overall quality of the billet.
- Q:What are the potential defects or flaws in steel billets?
- There are several potential defects or flaws that can occur in steel billets, which can affect the quality and performance of the final product. Some of these defects include: 1. Surface defects: Steel billets can develop surface cracks, scales, or scratches during the manufacturing process. These defects can weaken the material and reduce its structural integrity. 2. Internal defects: Inclusions, such as non-metallic impurities or gas bubbles, can be present within the steel billets. These internal defects can cause localized weaknesses and reduce the overall strength of the material. 3. Segregation: Uneven distribution of alloying elements or impurities can lead to segregation, where certain areas of the billet have different chemical compositions. Segregation can result in inconsistent mechanical properties across the material and decrease its uniformity. 4. Central segregation: This defect occurs when there is a concentration of impurities or alloying elements in the central region of the billet, leading to a weaker core. Central segregation can cause structural failures and reduce the overall reliability of the steel billet. 5. Shrinkage cavities: During the solidification process, shrinkage cavities can form in the steel billet due to the contraction of the molten metal. These cavities can weaken the material and compromise its structural integrity. 6. Surface decarburization: Exposure to high temperatures or improper heat treatment can cause the surface of the steel billet to lose carbon content, resulting in surface decarburization. This defect can reduce the hardness and strength of the material. 7. Laminations: Laminations are thin, elongated voids or layers that can form parallel to the surface of the billet. These defects can weaken the material and make it prone to cracking or failure under stress. 8. Internal cracks: Internal cracks can occur due to improper cooling or handling of the billet during the manufacturing process. These cracks can compromise the structural integrity of the steel billet and potentially lead to catastrophic failure. It is important to detect and address these defects early on to ensure the quality and reliability of the steel billets. Various non-destructive testing techniques, such as ultrasonic testing or magnetic particle inspection, can be utilized to identify and mitigate these potential flaws.
- Q:What are the main surface finishes available for steel billets?
- The main surface finishes available for steel billets include mill finish, pickled and oiled (P&O), galvanized, painted, and coated finishes. Mill finish refers to the surface of the steel billet as it comes from the rolling mill, which is typically characterized by a rough and unfinished appearance. This finish is suitable for applications where aesthetics are not a priority, such as when the billets will be further processed or coated. Pickled and oiled (P&O) finish involves treating the steel billets with an acid solution to remove any mill scale or impurities, followed by applying a thin layer of oil to protect the surface from oxidation. This finish provides a clean and smooth surface, making it suitable for applications where a high-quality appearance is desired. Galvanized finish involves immersing the steel billets in a zinc bath to create a protective layer of zinc coating over the surface. This finish provides excellent corrosion resistance, making it ideal for outdoor applications or environments with high moisture or chemical exposure. Painted finish involves applying a layer of paint onto the surface of the steel billets. This finish offers both aesthetic appeal and protection against corrosion, as the paint acts as a barrier between the steel and the external environment. Painted finishes can be customized in terms of color and texture to suit specific requirements. Coated finishes involve applying a specialized coating onto the surface of the steel billets. These coatings can include epoxy, polyurethane, or other protective materials that provide enhanced corrosion resistance, chemical resistance, or heat resistance. Coated finishes are often used in industries such as automotive, construction, or oil and gas, where the billets are subjected to harsh conditions. Overall, the choice of surface finish for steel billets depends on the specific application requirements, including aesthetics, corrosion resistance, durability, and environmental factors.
- Q:What is the typical yield strength of a steel billet?
- The yield strength of a steel billet typically varies based on its specific grade and composition. Generally, steel billets exhibit a yield strength between 300 and 500 megapascals (MPa). It should be emphasized that this is merely a broad range, and the actual yield strength may differ depending on factors such as the steel's alloying elements, heat treatment, and processing methods.
- Q:What are the different types of steel billet surface treatment defects?
- During the manufacturing process, various defects can arise in the surface treatment of steel billets. The presence of these defects can have a negative impact on the quality and appearance of the billets, making it essential to detect and resolve them in order to guarantee the overall performance of the end product. 1. One common defect is scale, which occurs when the steel billet is exposed to high temperatures. This results in the formation of an oxide layer on the surface, adversely affecting the adhesion of coatings or paints. 2. Inclusions are another type of defect that can be found on the surface of the steel billet. These inclusions are non-metallic particles or impurities that may originate from inadequate cleaning or improper handling during the manufacturing process. They have the potential to undermine the mechanical properties of the steel, leading to an overall reduction in performance. 3. Decarburization is a defect that arises when the carbon content in the outer layer of the steel billet is lost due to exposure to high temperatures or a lack of protective atmosphere. This loss of carbon can result in decreased hardness and strength in the affected area. 4. Pitting is a localized defect characterized by the presence of small cavities or pits on the surface of the steel billet. It can be caused by impurities or exposure to corrosive environments. Pitting has the potential to compromise the structural integrity of the billet and make it more susceptible to corrosion. 5. Surface cracks may occur on the steel billet due to factors such as thermal stress, improper handling, or inadequate cooling. These cracks weaken the billet and increase the risk of failure during subsequent processing or use. 6. Surface roughness refers to an uneven or irregular texture on the surface of the steel billet. It can be caused by factors such as improper machining, inadequate cleaning, or the presence of scale or inclusions. Surface roughness affects the appearance of the billet and can impact its performance in certain applications. In conclusion, it is crucial to identify and resolve these surface treatment defects to ensure the quality and reliability of steel billets. Employing proper manufacturing processes, including thorough cleaning, protective atmospheres, and appropriate handling, is key to minimizing the occurrence of these defects and ensuring optimal performance of the final product.
- Q:What are the different methods of surface inspection for steel billets?
- There are several methods of surface inspection for steel billets, which are used to identify any defects or irregularities on the surface. These methods include visual inspection, magnetic particle inspection, liquid penetrant inspection, ultrasonic inspection, and eddy current inspection. Visual inspection is the simplest and most commonly used method, where inspectors visually examine the surface of the billets for any visible defects such as cracks, pits, or surface irregularities. This method relies on the expertise and experience of the inspector. Magnetic particle inspection involves the use of magnetic fields and magnetic particles to detect surface and near-surface defects. A magnetic field is applied to the steel billet, and magnetic particles are applied to the surface. If there is a defect, the magnetic particles will be attracted to it, making the defect visible under proper lighting. Liquid penetrant inspection is another method used to detect surface defects. In this method, a liquid penetrant is applied to the surface of the billet. The penetrant seeps into any surface defects, and after a certain amount of time, excess penetrant is removed. A developer is then applied, which draws the penetrant out of the defects, making them visible. Ultrasonic inspection involves the use of high-frequency sound waves to detect internal and surface defects. A transducer is used to emit sound waves into the billet, and the reflected waves are analyzed to identify any defects. This method can detect defects such as cracks, voids, and inclusions. Eddy current inspection is a non-destructive testing method that uses electromagnetic induction to detect surface defects. A probe is moved over the surface of the billet, and an alternating current is passed through it. Any surface irregularities or defects will disrupt the flow of current, which can be detected and analyzed. Each of these methods has its own advantages and limitations, and the choice of method depends on the specific requirements and constraints of the inspection process. By utilizing these different methods, manufacturers can ensure the quality and reliability of steel billets before they are further processed or used in various applications.
- Q:How are steel billets shaped into rods or wires?
- Rods or wires are produced from steel billets by undergoing a process called hot rolling. This process involves passing the steel billets through a series of rollers at high temperatures. The initial step is to heat the billets to a temperature above their recrystallization point, which is typically around 1200-1300 degrees Celsius. This temperature is important as it ensures the steel becomes soft and easily malleable, thus facilitating the shaping process. Once the billets have been heated, they are then fed through a series of rollers that gradually decrease their thickness and give them the desired rod or wire shape. The rollers exert pressure on the billets, causing them to elongate and reduce in thickness. The number and arrangement of the rollers may vary depending on the specific requirements of the rod or wire being manufactured. Throughout the hot rolling process, the steel undergoes plastic deformation due to the combination of applied pressure and high temperatures. This plastic deformation enables the steel to change its shape without breaking or cracking. The continuous rolling and reduction in thickness gradually transform the billets into rods or wires. After achieving the desired size and shape, the steel is cooled, typically using air cooling. This cooling process enables the steel to maintain its new shape and hardness. The cooled rods or wires can then undergo further processing, such as additional heat treatments or surface treatments, to enhance their properties and meet specific requirements. In conclusion, the hot rolling process is indispensable in shaping steel billets into rods or wires. It allows for precise control over dimensions and properties, while ensuring the final product meets the desired specifications.
- Q:How are steel billets used in the production of sheet metal?
- Steel billets are used in the production of sheet metal through a process known as rolling. Rolling is a technique that involves passing steel billets through a series of rollers to reduce their thickness and create a flat sheet. The first step in the process is to heat the steel billets to a specific temperature to make them more malleable. Once heated, the billets are then fed into a rolling mill, where they pass through a series of rollers that gradually decrease the thickness of the steel. As the billets are rolled, they are compressed and elongated, resulting in a thinner and longer piece of steel. This process is repeated multiple times, with each pass reducing the thickness of the steel sheet. Once the desired thickness is achieved, the sheet is cooled and cut into specific lengths. The final product is a flat sheet of sheet metal that can be further processed and used in various industries, such as construction, automotive, and manufacturing. Steel billets play a crucial role in the production of sheet metal as they provide the raw material from which the sheets are formed. Their malleability and ability to withstand the rolling process make them an ideal choice for creating thin and durable sheet metal.
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Hot rolled Carbon Steel Billets Square Billets
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 1000 m.t.
- Supply Capability:
- 16021 m.t./month
OKorder Service Pledge
Quality Product, Order Online Tracking, Timely Delivery
OKorder Financial Service
Credit Rating, Credit Services, Credit Purchasing
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