Steel billets Q215 chrome alloy low price
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 1000 m.t.
- Supply Capability:
- 14950 m.t./month
OKorder Service Pledge
Quality Product, Order Online Tracking, Timely Delivery
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Credit Rating, Credit Services, Credit Purchasing
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Specification
Size:
100mm to 165mm
Length:
6~12 M
Grade:
Q195/Q215/Q235/Q275
Billets, or ingots (as they sometimes referred to), are not of practical use until they have been formed
into more functional shapes and sizes. While they have already been put in the furnace, they still require
a series of shaping and molding procedures such as hot and cold working, milling and cutting before they
are sold in hardware stores, or used for different applications. The unformed billets, however, can be used
in striking currency such as coins and as reserves, similar to gold bars.
Used for the plant, the bridge,shipment building high-rise building construction,lifting and transportation machinery, equipment manufracturing base
building the support foundation pile manufacturing.
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 |
Our service :
We have a plant and professional team to provide our best service, from the start of production until the
loading into the vessel, we have a complete quality follow up procedure, to assure our products arrives to the customer with satisfaction. Welcome new and old customers
to contact us for future business relationships! We will give you a surpise price.
Packing :
Within 30 days
1.Standard export package
2.In bundles with steel strips
3.As the requirements of the customers
FAQ:
Q: What is payment terms?
A: FOB 30% T/T IN ADVANCE AS DEPOSIT AND 70% T/T BEFORE SHIPMENT
CIF and CFR 30% T/T IN ADVANCE AS DEPOSIT AND 70% T/T AS THE COPY OF B/L OR L/C AT SIGHT
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: How are steel billets used in the manufacturing of industrial machinery?
- Steel billets are used in the manufacturing of industrial machinery as raw materials that are shaped and processed into various components, such as gears, shafts, and frames. These billets are heated, forged, and machined to create the desired shapes and sizes, providing the necessary strength and durability for the machinery to function effectively in various applications.
- Q: What are the environmental impacts of steel billet production?
- The production of steel billets, which are semi-finished steel products, can have various environmental impacts. One significant environmental impact is the emission of greenhouse gases during the steel manufacturing process. The production of steel billets involves the melting of iron ore, which releases carbon dioxide (CO2) into the atmosphere. CO2 is a major contributor to global warming and climate change. Another environmental impact of steel billet production is the consumption of natural resources. The steel industry requires significant amounts of water and energy to produce billets. The extraction and processing of raw materials, such as iron ore and coal, can also lead to habitat destruction and disruption of ecosystems. Furthermore, the production of steel billets can result in air and water pollution. The combustion of fossil fuels during the manufacturing process releases various pollutants, including sulfur dioxide (SO2) and nitrogen oxides (NOx), which contribute to acid rain and respiratory problems. Additionally, the discharge of wastewater from steel production can contain heavy metals and other contaminants, which can pollute rivers and harm aquatic life. Steel billet production also generates solid waste, such as slag and dust, which can pose challenges for waste management. These waste materials may contain toxic substances and require proper handling and disposal to prevent environmental contamination. To mitigate the environmental impacts of steel billet production, various measures can be taken. The adoption of cleaner technologies, such as energy-efficient furnaces and recycling processes, can help reduce energy consumption and emissions. Implementing rigorous environmental management systems and investing in pollution control technologies can also minimize air and water pollution. Additionally, promoting the use of recycled steel and sustainable sourcing of raw materials can help conserve natural resources and reduce the environmental footprint of steel billet production.
- Q: How are steel billets shaped into other forms?
- A process known as hot rolling is used to transform steel billets into different forms. This process involves feeding the steel billet through heated rollers, which compress and mold it into the desired shape. To begin, the steel billet is heated to a high temperature in a furnace. This heat treatment makes the steel more malleable and easier to shape. Once the billet has reached the desired temperature, it is then sent into a rolling mill. Within the rolling mill, the billet undergoes a series of passes through rollers that apply pressure and force to shape the steel. These rollers come in various shapes and sizes depending on the desired outcome. As the billet passes through the rollers, it gradually takes on the desired form, such as sheets, bars, or beams. The rolling process not only shapes the steel but also improves its mechanical properties. It refines the grain structure, enhances strength and toughness, and eliminates any internal defects. This makes the steel more suitable for a range of applications, including construction, automotive, and machinery. Following the hot rolling process, the steel often undergoes additional processing through cold rolling. This involves passing the steel through cold rollers to further refine its surface finish and dimensions. Additionally, secondary operations like cutting, bending, and welding may be carried out to further shape the steel into the desired end product. In conclusion, hot rolling plays a vital role in transforming steel billets into various forms. It enables the production of a wide range of steel products, each with its own unique shape, size, and mechanical properties. This helps meet the diverse needs of industries worldwide.
- Q: How are steel billets used in the manufacturing of fasteners and fittings?
- Fasteners and fittings rely on steel billets as a vital raw material in their production. These components are essential for securely holding multiple parts together or connecting different sections of a structure or system. To create fasteners and fittings, steel billets undergo a series of steps. Initially, the billets are heated to a high temperature, making them malleable. Known as hot rolling, this heating process allows the billets to be shaped according to the desired form. Subsequently, the billets are passed through rollers that gradually decrease their thickness and increase their length. This transforms them into long, slender rods called wire rods. Next, the wire rods undergo cold drawing or rolling to refine their shape and dimensions further. This process enhances the rods' surface finish and strength. As a result, precise diameter wires are formed, which are then utilized in the production of fasteners such as screws, bolts, and nuts. The wires are cut to specific lengths and threaded to create the grooves and patterns essential for fastening. The threads enable easy screwing into other components, ensuring a secure and reliable connection. The size and shape of the threads are crucial as they determine the compatibility of the fasteners with various applications. In the case of fittings, additional processes are applied to the wire rods, including machining, bending, or welding. Machining involves using cutting tools to shape the wire rods into specific sizes and forms. Bending allows the wire rods to be molded into different angles or curves to fit the desired configuration of the fittings. Welding is employed to join multiple wire rods or other components, enabling the creation of complex fittings. After the manufacturing process, both fasteners and fittings undergo rigorous quality control tests to ensure they meet the required standards for strength, durability, and dimensional accuracy. These tests assess factors such as threading precision, hardness, and resistance to corrosion. In conclusion, steel billets play a crucial role in the production of fasteners and fittings. Through processes like hot rolling, cold drawing or rolling, threading, and various shaping techniques, steel billets are transformed into wires and further processed to create a wide range of fasteners and fittings. These components are vital in industries such as construction, machinery, and automotive.
- Q: What are the different surface treatments for improved fatigue resistance in steel billets?
- To enhance the fatigue resistance of steel billets, several surface treatments can be utilized. These treatments aim to improve the steel's fatigue strength by reducing crack formation and propagation, increasing resistance to cyclic loading conditions. Some common surface treatments include: 1. Shot peening: This technique involves bombarding the steel billets with small metallic or ceramic particles at high velocities. By inducing compressive residual stresses on the surface, crack initiation and propagation are prevented, thus improving fatigue resistance. 2. Nitriding: Through this heat treatment process, nitrogen is diffused into the surface layer of the steel billets. This creates a hard nitride layer, increasing hardness, wear resistance, and fatigue strength. 3. Carburizing: Carbon is diffused into the surface layer of the steel billets at high temperatures, increasing carbon content and forming a hardened layer. This enhances fatigue resistance and wear properties. 4. Shot peen forming: Controlled shot peening induces plastic deformation in the steel billets. This treatment improves fatigue resistance, as well as shape and dimensional stability. 5. Surface coatings: Protective coatings can be applied to the surface of steel billets to enhance fatigue resistance. Techniques such as electroplating, thermal spraying, and chemical vapor deposition can deposit wear-resistant and fatigue-enhancing coatings. It is important to consider specific application requirements, steel type, and desired fatigue improvement level when choosing a surface treatment. Thorough consideration and testing should be conducted to determine the most suitable technique for a particular application.
- Q: What are the potential defects or flaws in steel billets?
- Steel billets may experience various defects or flaws that can impact the final product's quality and performance. Some of these defects include the following: 1. Surface imperfections: During manufacturing, steel billets may develop surface cracks, scales, or scratches. These imperfections can weaken the material and compromise its structural integrity. 2. Internal flaws: Inclusions, such as non-metallic impurities or gas bubbles, may be present within the steel billets. These internal flaws can create localized weaknesses and reduce the overall material strength. 3. Segregation: Uneven distribution of alloying elements or impurities can result in segregation, where different areas of the billet have varying chemical compositions. Segregation can lead to inconsistent mechanical properties and decrease material uniformity. 4. Central segregation: This defect occurs when impurities or alloying elements concentrate in the central region of the billet, resulting in a weaker core. Central segregation can cause structural failures and decrease the overall reliability of the steel billet. 5. Shrinkage cavities: During solidification, the contraction of molten metal can lead to the formation of shrinkage cavities in the steel billet. These cavities can weaken the material and compromise its structural integrity. 6. Surface decarburization: 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 material's hardness and strength. 7. Laminations: Thin, elongated voids or layers known as laminations can form parallel to the billet's surface. These defects can weaken the material and make it susceptible to cracking or failure under stress. 8. Internal fissures: Improper cooling or handling during manufacturing can lead to internal fissures or cracks. These cracks can jeopardize the structural integrity of the steel billet and potentially lead to catastrophic failure. It is crucial to detect and address these defects early on to ensure the quality and reliability of the steel billets. Several non-destructive testing techniques, such as ultrasonic testing or magnetic particle inspection, can be employed to identify and mitigate these potential flaws.
- Q: Our caster is square billet! 150X500! That is, every time we open the head, there is slag inclusion. And pores! Yes, the first 3 meters! There's no more left behind! How did it happen, please?! We have a refinery and electromagnetic stirring! Give me a hand!
- 1. Whether the injection hole before the casting is replaced with the protective slag instead of the special drainage sand, and whether the drain sand is dry or not2, whether it is too early to start adding protective slag is to protect the slag whether it is dry or not3, the opening of the mold to maintain the steel surface uniform and stable, rising to the required height, the key is fluctuation.
- 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.
- Q: How is a steel billet made?
- Continuous casting is a common method used to produce steel billets. This process includes several steps that involve the gathering and processing of raw materials, the transformation of these materials into molten pig iron, and the refining of the molten pig iron in either a basic oxygen furnace or an electric arc furnace. In these refining furnaces, impurities are eliminated and alloying elements may be added to achieve specific properties. Once the molten steel is chemically balanced and refined, it is ready for casting. To do this, the steel is poured into a water-cooled copper mold known as a continuous caster. As it flows into the mold, the steel solidifies and takes the shape of a long rectangular or square billet. During the casting process, water is circulated through the mold to cool the steel quickly and aid in solidification. This controlled cooling ensures that the billet has a consistent structure and the desired mechanical properties. After solidification, the billet is cut into predetermined lengths using a torch or a shear. These billets can vary in size and weight depending on their intended use. Once cut, the billets can undergo further processing through rolling, forging, or other shaping methods to create various steel products such as bars, rods, tubes, or structural shapes. In summary, the production of a steel billet involves the transformation of raw materials into molten steel, the refining of the molten steel, and the casting of it into a solid shape using continuous casting. These billets then serve as the starting point for the production of a wide range of steel products used in various industries.
- Q: What are the different types of surface finish inspection methods for steel billets?
- There are several different types of surface finish inspection methods that can be used for steel billets. These methods are crucial in determining the quality and suitability of the billets for further processing or use. Some of the common surface finish inspection methods for steel billets include: 1. Visual inspection: This is a basic method where the surface of the billet is visually examined for any irregularities, such as cracks, pits, scratches, or any other surface imperfections. It is a quick and cost-effective method but may not be able to detect subtle defects. 2. Magnetic particle inspection: This method involves magnetizing the surface of the billet and applying fine iron particles on it. Any surface cracks or defects will cause a leakage of magnetic field, attracting the iron particles and making them visible under appropriate lighting conditions. 3. Dye penetrant inspection: In this method, a liquid dye is applied to the surface of the billet. The dye penetrates into any surface cracks or defects, and after a certain period, excess dye is removed. A developer is then applied, which draws out the dye from the cracks and defects, making them visible. 4. Ultrasonic testing: This method utilizes high-frequency sound waves that are transmitted through the steel billet. The waves are reflected back when they encounter any surface irregularities, such as cracks or voids. By analyzing the time taken for the waves to return, the size and depth of the defects can be determined. 5. Eddy current testing: This non-destructive testing method uses electromagnetic induction to detect surface defects. An alternating current is passed through a coil, creating a magnetic field. When the coil is near the surface of the billet, any defects will disrupt the magnetic field, causing a change in the electrical impedance. This change is measured and analyzed to identify surface defects. Each of these inspection methods has its advantages and limitations, and the choice of method depends on the specific requirements, the size and shape of the billet, and the level of accuracy desired. By employing these surface finish inspection methods, manufacturers can ensure the quality and reliability of the steel billets before they are further processed or used in various applications.
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Steel billets Q215 chrome alloy low price
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 1000 m.t.
- Supply Capability:
- 14950 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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