steel billets, square steel bar, mild steel bar China manufacturer
- Ref Price:
-
- Loading Port:
- China main port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 25 m.t.
- Supply Capability:
- 800000 m.t./month
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Steel billets, square steel bar, mild steel bar China manufacturer
Size:30*30mm-150*150mm
Standard: GB,BS,ASTM
Grade: Q195/215/235/345/45#/3SP/5SP,ect
Application: Carbon structural steel, alloy structural steel, gear steel, spring steel,
bearing steel, etc.
Packaging Detail: exporting standard packing in mill or as request
Delivery Detail: within 15-30 days after receiving deposits or original LC
The Billets produced by the company can be broadly divided into three main types i.e.
1. M.S. Billets
2. CRS Billets
3. Special Alloy Billets
M.S. Billets are used for rolling of TMT Re-Bars of Fe415 and Fe500 Grade and
various other structural steel products.
CRS Billets are used for rolling of CRS TMT Re-Bars.
Special Alloy Billets are used for rolling of any special grade TMT Re-Bars like
Earthquake resistant TMT Re-Bars and for special grade structural steel products.
Steel billets, mild steel bar chemical properties
| Ladle Analysis: | ||
| Designation | Carbon | Manganese |
| C15 | 0.12-0.18 | 0.30-0.60 |
| C18 | 0.15-0.21 | 0.30-0.60 |
| C20 | 0.17-0.23 | 0.30-0.60 |
| C15 MMn | 0.12-0.18 | 0.60-1.00 |
| C18 MMn | 0.15-0.21 | 0.60-1.00 |
| C20 MMn | 0.17-0.23 | 0.60-1.00 |
| C15 HMn | 0.12-0.18 | 1.00-1.50 |
| C18 HMn | 0.15-0.21 | 1.00-1.50 |
| C20 HMn | 0.17-0.23 | 1.00-1.50 |
- Q: What are the different surface treatment methods used for steel billets?
- There are various surface treatment methods used for steel billets to enhance their properties and improve their performance. Some of the commonly used methods include: 1. Pickling: This method involves immersing the steel billets in an acid bath, typically hydrochloric or sulfuric acid, to remove any scale or oxides from the surface. Pickling helps in improving the surface finish and prepares the billets for further processing. 2. Shot blasting: In shot blasting, steel billets are subjected to high-velocity steel shots to remove any rust, scale, or contaminants from the surface. This method not only cleans the surface but also improves its roughness, promoting better adhesion of coatings or paints. 3. Phosphating: Phosphating is a chemical process that involves the application of a phosphate coating on the steel billet's surface. This coating provides corrosion resistance and improves paint adhesion. Phosphating is commonly used as a pre-treatment method before applying organic coatings. 4. Galvanizing: Galvanizing is a popular surface treatment method that involves coating the steel billets with a layer of zinc. This process provides excellent corrosion resistance and protects the steel from environmental factors. Galvanized steel billets are commonly used in outdoor applications or in industries where rust prevention is crucial. 5. Electroplating: Electroplating is a process where a thin layer of metal, such as chromium or nickel, is deposited onto the steel billet's surface using an electric current. This method improves the aesthetic appearance, corrosion resistance, and wear resistance of the steel billets. 6. Coating: Coating refers to applying a protective layer on the steel billet's surface using paints, varnishes, or other protective coatings. These coatings act as a barrier against corrosion, abrasion, and other forms of damage. Coatings can be applied through various methods like spraying, dipping, or powder coating. 7. Passivation: Passivation is a chemical process used to remove free iron and other contaminants from the steel billet's surface. This process helps in restoring the steel's passive film, which provides corrosion resistance. Passivation is commonly used in stainless steel billets to enhance their resistance to rust and corrosion. These surface treatment methods play a vital role in improving the quality, durability, and performance of steel billets, making them suitable for a wide range of applications in industries such as construction, automotive, and manufacturing.
- Q: What is the difference between continuous casting billet and cast billet?
- Mainly to see the process, general casting efficiency is low, but the quality is acceptable, with low level (open casting billet) has great advantages in surface quality;
- Q: How long do steel billets last?
- The longevity of steel billets varies depending on multiple factors, including their storage conditions and utilization. Provided that they are stored appropriately in a controlled environment with low humidity and shielded from corrosion, steel billets can endure indefinitely. Conversely, if they are exposed to harsh weather, excessive moisture, or corrosive substances, their lifespan can be significantly diminished. As for their usage, steel billets are typically melted and transformed into other steel products, such as bars, rods, and beams. The lifespan of the final product hinges on its specific application and the maintenance practices implemented. Generally, steel products are renowned for their durability and longevity, rendering them a dependable option in numerous industries.
- Q: What are the different types of shearing machines used for steel billets?
- Steel billets can be cut using various types of shearing machines. These machines are designed for precise and efficient cutting operations in the steel industry. Here are some examples of the different shearing machines used for steel billets: 1. Guillotine Shears: Guillotine shears are widely used for cutting steel billets. They have a fixed bed and a vertically moving blade that cuts through the material. Guillotine shears offer high cutting accuracy and can easily handle thick billets. 2. Flying Shears: Also known as rotary shears, flying shears are another popular option. They have a circular blade that rotates and cuts the billet as it moves along the conveyor. Flying shears are known for their high cutting speed and ability to handle large volumes. 3. Cold Shears: Cold shears are designed to cut steel billets at lower temperatures to prevent heat damage. They use hydraulic or mechanical systems to apply force and cut through the billet. Cold shears are commonly used in industries where cooling the billets is necessary before further processing. 4. Rotary Shears: Rotary shears are used to cut steel billets into smaller sections. They have multiple blades mounted on a rotating drum, which cuts the billet into desired lengths. Rotary shears offer high cutting efficiency and are often used when small-sized billets are required. 5. Hydraulic Shears: Hydraulic shears are versatile machines that can cut various materials, including steel billets. They use hydraulic power to provide the cutting force. Hydraulic shears have a high cutting speed and can efficiently handle large-sized billets. Each type of shearing machine mentioned above has its own advantages and is suitable for specific applications in the steel industry. The choice of shearing machine depends on factors such as billet size and thickness, required cutting accuracy, production volume, and other specific requirements of the steel processing operation.
- Q: How are steel billets handled during transportation?
- To ensure the safety and integrity of steel billets during transportation, great care is typically taken. Specialized equipment, such as cranes, forklifts, or conveyors, is commonly used to lift and transport the heavy billets. Before being transported, the billets are often bundled or secured together to prevent shifting or falling. This bundling process may involve tightly holding the billets with steel straps or bands, ensuring they remain stable throughout transportation. Protective measures are also frequently implemented to prevent external damage. For example, the billets can be covered with protective coatings, such as oil or rust inhibitors, to shield them from moisture and corrosion. This is especially important when transporting billets over long distances or in unfavorable weather conditions. When it comes to loading the billets onto trucks, trains, or ships, careful attention is paid to balancing the weight distribution to avoid any imbalances or tipping during transit. The transportation vehicles used are designed to handle heavy loads and often have additional mechanisms, like straps, latches, or containers, to further secure the billets. During transit, the vehicles carrying the steel billets are operated with caution to minimize sudden movements or impacts. Drivers may need to follow specific routes or adhere to speed limits to ensure a smooth and safe journey. Regular inspections and maintenance of the transportation vehicles are carried out to ensure their reliability and prevent any mechanical failures that could jeopardize the safety of the billets. In conclusion, the transportation of steel billets requires meticulous planning, secure bundling, protective measures, and safe handling techniques. These practices are implemented to safeguard the billets and ensure they reach their destination in optimal condition, ready for further processing or utilization in various industries.
- Q: What are the different types of steel billet rolling mill defects?
- There are several types of steel billet rolling mill defects that can occur during the rolling process. These defects can have various causes and can affect the quality and performance of the final product. Some of the common types of defects include: 1. Surface defects: These defects are visible on the surface of the rolled billet and can include scratches, cracks, pits, and scale. Surface defects can be caused by improper handling, inadequate lubrication, or excessive rolling pressures. 2. Shape defects: Shape defects refer to the deviations from the desired shape of the billet. These can include bowing, twisting, or excessive tapering. Shape defects can be caused by uneven cooling, improper alignment of the rolling mill, or incorrect rolling parameters. 3. Internal defects: Internal defects are defects that are not visible on the surface but can affect the structural integrity of the billet. These defects can include segregation, porosity, and inclusions. Internal defects can be caused by the presence of impurities in the raw material, improper heating or cooling, or inadequate quality control measures. 4. Dimensional defects: Dimensional defects refer to deviations from the desired dimensions of the billet, such as variations in length, width, or thickness. These defects can be caused by improper calibration of the rolling mill, incorrect rolling parameters, or inadequate quality control measures. 5. Metallurgical defects: Metallurgical defects are defects that occur due to improper metallurgical processes during rolling. These defects can include grain size variations, improper grain flow, or undesirable microstructure. Metallurgical defects can be caused by improper temperature control, inadequate alloying, or insufficient heat treatment. It is important for steel billet rolling mills to have proper quality control measures in place to identify and rectify these defects. Regular inspections, testing, and monitoring of the rolling process can help to minimize these defects and ensure the production of high-quality steel billets.
- Q: Can steel billets be recycled?
- Yes, steel billets can be recycled. Steel is a highly recyclable material, and the recycling process for steel billets is relatively straightforward. When steel billets, which are typically produced through a casting process, are no longer needed or have reached the end of their lifecycle, they can be recycled and transformed into new steel products. The recycling process begins with the collection and sorting of the steel billets. They are then transported to a recycling facility where they are melted down in a furnace. Once melted, impurities are removed, and the resulting molten steel is formed into new billets or other steel products through various shaping and casting techniques. Recycling steel billets not only helps to conserve natural resources and reduce waste but also has significant environmental benefits. The recycling process requires less energy and emits fewer greenhouse gases compared to the production of steel from raw materials. Additionally, recycling steel helps to reduce the demand for mining iron ore, which can have detrimental effects on the environment. Overall, steel billets can be effectively recycled, allowing for the sustainable and responsible use of this versatile material.
- Q: How do steel billets contribute to the overall sustainability of a product?
- Steel billets play a crucial role in enhancing the overall sustainability of a product. Firstly, steel is one of the most widely recycled materials in the world, and using steel billets in the manufacturing process allows for a closed-loop recycling system. This means that the steel billets can be continuously recycled and reused without any loss in quality or performance. Recycling steel reduces the need for extracting raw materials, conserving natural resources, and reducing energy consumption, ultimately reducing the carbon footprint of the product. Additionally, steel billets contribute to the durability and longevity of a product. Steel is a highly durable material that can withstand harsh environmental conditions and heavy usage. By using steel billets in the production process, products are made to last longer, reducing the need for frequent replacement and minimizing waste generation. Furthermore, steel billets can be used in various industries, including construction, automotive, and manufacturing, where sustainability is of utmost importance. Steel structures and components made from steel billets are known for their high strength-to-weight ratio, allowing for lighter structures and vehicles. This leads to reduced energy consumption during transportation and improved fuel efficiency in the case of automobiles, ultimately reducing greenhouse gas emissions. Moreover, steel is a non-toxic material and does not release harmful substances into the environment. This ensures that products made from steel billets are safe for both consumers and the environment throughout their lifecycle. In conclusion, steel billets contribute significantly to the overall sustainability of a product by enabling closed-loop recycling, reducing the need for raw materials extraction, increasing product durability, promoting energy efficiency, and being non-toxic. By incorporating steel billets into the production process, manufacturers can enhance the environmental performance of their products and contribute to a more sustainable future.
- Q: What are the different types of steel billet heat treatment processes?
- The industry commonly utilizes various steel billet heat treatment processes to enhance the mechanical properties of steel billets, including strength, hardness, toughness, and ductility, to meet specific application needs. Among the different types of steel billet heat treatment processes are: 1. Annealing: This process entails heating the steel billet to a specific temperature and gradually cooling it to room temperature. It aims to alleviate internal stresses and enhance the machinability and ductility of the steel. 2. Normalizing: The steel billet is heated above its critical point and then allowed to cool in still air. Normalizing refines the grain structure of the steel, resulting in improved mechanical properties and uniformity. 3. Quenching: This process involves rapidly cooling the steel billet from a high temperature by immersing it in a quenching medium, such as water, oil, or polymer. Quenching creates a hardened structure, thereby increasing the steel's hardness and strength. 4. Tempering: After quenching, the steel billet is heated to a lower temperature and slowly cooled. Tempering reduces the brittleness caused by quenching and improves the toughness, ductility, and machinability of the steel. 5. Austempering: The steel billet is quenched to a temperature slightly above the martensite transformation range and held at that temperature until it transforms to bainite. Austempering results in a structure with improved strength, toughness, and wear resistance. 6. Martempering: Similar to austempering, the steel billet is quenched into a medium slightly above the martensite transformation range and then held until it cools below that temperature. Martempering produces a structure with enhanced toughness and reduced distortion compared to conventional quenching. These examples represent only a fraction of the numerous heat treatment processes employed for steel billets. The selection of the appropriate process depends on the desired mechanical properties and application requirements of the steel.
- Q: How are steel billets used in the manufacturing of marine components?
- Steel billets are used in the manufacturing of marine components as they serve as the starting material for forging, casting, or machining various parts like propellers, hull structures, valves, and shafts. These billets undergo further processing to form the desired shapes and sizes, ensuring the strength, durability, and corrosion resistance required for marine applications.
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steel billets, square steel bar, mild steel bar China manufacturer
- Ref Price:
-
- Loading Port:
- China main port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 25 m.t.
- Supply Capability:
- 800000 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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