Hot rolled Steel Square Billets Q195 and Q235 with High Quality for Construction
- Ref Price:
-
- Loading Port:
- China main port
- Payment Terms:
- TT or LC
- Min Order Qty:
- 25000 m.t.
- Supply Capability:
- 200000 m.t./month
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Quality Product, Order Online Tracking, Timely Delivery
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Specification of Hot rolled Steel Square Billets Q195 and Q235 with High Quality for Construction:
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 | ||
Technology process of Hot rolled Steel Square Billets Q195 and Q235 with High Quality for Construction:
1.Heat the EVA film
2.Cover the heated EVA film on the mould(can be made from wood or aluminum)
3.Spray a coating in a certain baume degree
4.Put on the empty blask
5.Sand-up the flask and vibrate to compaction
Packaging & Delivery of Hot rolled Steel Square Billets Q195 and Q235 with High Quality for Construction:
Packaging Details:containers
Delivery Detail:Complete one set of equipment needs for three months
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.
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.
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- Q: What are the international standards for steel billets?
- The International Organization for Standardization (ISO) and the American Society for Testing and Materials (ASTM) are the primary governing bodies for international steel billet standards. They have developed various standards to guarantee the quality and consistency of steel billets worldwide. ISO 4948-1:2019 outlines the general requirements for steel billets that will be converted into seamless tubes and pipes. It encompasses dimensions, tolerances, surface conditions, and test methods to evaluate the physical and mechanical properties of the billets. By adhering to ISO 4948-1, the billets are ensured to meet the necessary criteria for subsequent tube and pipe manufacturing processes. ASTM A370 serves as the standard test method for the mechanical testing of steel products, including billets. This standard provides guidelines for various mechanical tests such as tension, hardness, and impact tests, which assess the strength, ductility, and toughness of the billets. It guarantees that the billets meet the specified mechanical properties required for their intended applications. Aside from ISO and ASTM standards, there are also regional and national standards that apply to steel billets. For instance, the European Committee for Standardization (CEN) has developed the EN 10025 series of standards that cover the technical delivery conditions for structural steels, including billets. These standards specify the chemical composition, mechanical properties, and testing requirements for the billets used in construction and other structural applications in Europe. Overall, the international standards for steel billets aim to establish uniformity and quality control in the production and utilization of these materials across various industries and regions. Complying with these standards ensures that steel billets meet the necessary criteria for subsequent processing and application, thereby ensuring safety, reliability, and performance.
- Q: How are steel billets used in the manufacturing of food processing machinery?
- Steel billets are used in the manufacturing of food processing machinery as they provide the raw material for shaping and forming various components of the machinery, such as gears, shafts, and frames. The high strength and durability of steel billets ensure that the machinery can withstand the rigorous demands of food processing operations and maintain its functionality and longevity.
- Q: What are the main factors affecting the cost of steel billets?
- The cost of steel billets can be influenced by several key factors. 1. Raw material expenses play a significant role in determining the overall cost of steel billets. The prices of iron ore and scrap metal, which are used in the production process, can fluctuate in the global market, causing the cost of steel billets to rise or fall. 2. The cost of manufacturing steel billets includes various production and processing costs. These expenses, such as energy, labor, and maintenance costs, can vary depending on factors like production efficiency, skilled labor availability, and energy source prices. 3. The balance between supply and demand in the steel billet market can heavily impact their cost. If there is high demand and limited supply, prices can increase. Conversely, if there is excess supply and low demand, prices can decrease. 4. The level of competition among steel producers can also affect the cost of steel billets. In a competitive market, prices may be driven down as producers vie for customers. In a less competitive market, producers may have more pricing power, leading to higher prices. 5. Government policies and trade barriers, such as import tariffs and quotas, can influence the cost of steel billets. These measures can either protect domestic producers or create opportunities for cheaper imports, depending on specific policies in place. 6. Fluctuations in currency exchange rates can impact the cost of steel billets. A stronger domestic currency can make imported steel billets cheaper, while a weaker currency can make them more expensive. 7. The cost of transporting steel billets from production facilities to end-users can also affect their overall cost. Factors like distance, transportation mode, and fuel prices can impact transportation expenses, which can, in turn, affect the final price of steel billets. It is important to consider that these factors can interact with each other and their impact on the cost of steel billets can vary based on market conditions and industry dynamics.
- Q: What are the main factors affecting the thermal conductivity of steel billets?
- The thermal conductivity of steel billets is primarily influenced by several factors. Firstly, the chemical composition of the steel plays a significant role in determining its thermal conductivity. Elements such as carbon, manganese, and silicon can affect the crystal structure and the arrangement of atoms within the steel, which in turn influences its ability to conduct heat. Generally, steels with a higher carbon content have lower thermal conductivity due to the increased presence of impurities and the formation of non-conductive carbides. Secondly, the microstructure of the steel also affects its thermal conductivity. Heat conduction in steel occurs through the movement of lattice vibrations, known as phonons. The presence of grain boundaries, dislocations, and other defects within the microstructure can impede the phonon movement, resulting in reduced thermal conductivity. Conversely, a more uniform and fine-grained microstructure tends to enhance thermal conductivity. Furthermore, the temperature of the steel billet can significantly impact its thermal conductivity. As the temperature increases, the thermal conductivity of steel generally decreases due to the increased scattering of phonons by lattice vibrations and the accompanying rise in thermal resistance. Another factor that influences the thermal conductivity of steel billets is their physical dimensions, particularly their cross-sectional area and length. The larger the cross-sectional area, the higher the thermal conductivity, as there is more space available for the heat to transfer through. Similarly, longer billets tend to have lower thermal conductivity due to the increased distance over which heat must be conducted. Lastly, the presence of impurities and alloying elements in the steel can also affect its thermal conductivity. For example, alloying elements like nickel, chromium, and copper can alter the crystal structure and lattice vibrations, thereby influencing the thermal conductivity of the steel billet. In summary, the main factors affecting the thermal conductivity of steel billets include the chemical composition, microstructure, temperature, physical dimensions, and the presence of impurities and alloying elements. Understanding these factors is crucial in various industrial applications where heat transfer and thermal management play a critical role.
- Q: What is the role of steel billets in the production of steel bars?
- Steel billets play a crucial role in the production of steel bars. They are semi-finished forms of steel that are typically cast in a square or rectangular shape. These billets serve as the starting material for the production of various steel products, including steel bars. The primary purpose of steel billets is to be further processed and transformed into steel bars through a series of manufacturing steps. Once the steel billets are obtained, they undergo a process known as hot rolling. This involves subjecting the billets to high temperatures and passing them through rolling mills, where they are shaped and elongated into the desired form, such as round bars, square bars, or hexagonal bars. During the hot rolling process, the steel billets are subjected to extreme heat and pressure, causing them to deform and elongate. This process helps to improve the mechanical properties of the steel, such as strength, toughness, and ductility. It also refines the grain structure of the steel, enhancing its overall quality and performance. Steel bars produced from steel billets find wide applications in various industries, such as construction, manufacturing, infrastructure, and automotive. They are widely used as structural components in buildings, bridges, and other infrastructure projects, as well as in the production of machinery, tools, and equipment. In summary, steel billets play a critical role in the production of steel bars. They serve as the starting material for the manufacturing process, undergoing hot rolling to transform them into the desired shape and size. The resulting steel bars are then used in a wide range of applications due to their enhanced mechanical properties and improved quality.
- Q: What are the main factors affecting the surface finish of steel billets?
- The main factors affecting the surface finish of steel billets can be attributed to several key factors. Firstly, the quality and cleanliness of the raw materials used in the steelmaking process play a significant role. Any impurities or contaminants present in the raw materials can lead to surface defects and imperfections in the finished billets. Secondly, the processing parameters employed during the manufacturing process have a direct impact on the surface finish. Factors such as temperature, speed, and pressure can affect the formation of scale, oxidation, and other surface abnormalities. For instance, if the temperature is too high, it can result in excessive scaling, while insufficient temperature control may lead to inadequate scale removal. Furthermore, the type and condition of the equipment used for the production of steel billets can influence the surface finish. Abrasions, scratches, or other defects in the machinery can transfer onto the billets, affecting their surface quality. Regular maintenance and proper upkeep of the machinery are crucial to ensure a smooth and defect-free surface finish. Moreover, the choice and application of lubricants and coatings during the production process can also impact the surface finish. These substances serve to protect the billets from oxidation and aid in the reduction of friction. However, if not applied correctly or if the wrong type of lubricant is used, it can lead to uneven coating, streaking, or other surface irregularities. Lastly, the handling and storage of the steel billets after production can influence their surface finish. Mishandling, improper storage conditions, or exposure to moisture, chemicals, or contaminants can all contribute to surface defects and deterioration. In conclusion, the main factors affecting the surface finish of steel billets include the quality of raw materials, processing parameters, condition of equipment, application of lubricants and coatings, and proper handling and storage. By closely monitoring and optimizing these factors, manufacturers can achieve a high-quality surface finish that meets the desired specifications and requirements.
- Q: What is the role of steel billets in the manufacturing of fasteners?
- Fasteners, which are crucial components used to connect objects and provide stability and strength, rely heavily on steel billets in their manufacturing process. Acting as semi-finished products, steel billets serve as the starting point for fastener production. To make the steel billets malleable, the first step in the manufacturing process involves heating them to a specific temperature of approximately 1200-1300 degrees Celsius. This heating process facilitates easier shaping and manipulation during subsequent stages. Once the billets are heated, they undergo shaping by passing through a series of dies. These dies exert significant pressure to mold the billets into the desired form of the fastener. Designed with precise dimensions and shapes for each type of fastener, such as bolts, screws, or nuts, the dies play a key role in the shaping process. The deformation and compression experienced by the steel billets during shaping result in the basic structure and form of the fastener. The pressure applied by the dies ensures that the fasteners possess the necessary strength and durability to withstand the forces they will encounter in their intended applications. Moreover, steel billets are selected for fastener manufacturing due to their inherent properties. Steel exhibits exceptional strength, toughness, and corrosion resistance, making it an ideal material for fasteners. By starting with high-quality steel billets, the resulting fasteners will inherit these desirable attributes, guaranteeing reliability and longevity after installation. In conclusion, the significance of steel billets in fastener production cannot be overstated. Serving as the raw material, they undergo shaping and deformation to ultimately acquire the desired fastener shape. The use of steel billets ensures that the resulting fasteners possess the required strength, durability, and corrosion resistance for their intended applications.
- Q: What are the main differences between hot-rolled and cold-rolled steel billets?
- The main differences between hot-rolled and cold-rolled steel billets lie in the manufacturing process and the resulting characteristics of the steel. Hot-rolled steel billets are produced by heating the steel above its recrystallization temperature, typically around 1200°C (2200°F), and then rolling it into the desired shape or size. This process involves the use of large-scale machinery, such as rolling mills, which apply significant pressure to shape the steel. As a result, hot-rolled steel billets have a characteristic rough and scaled surface. On the other hand, cold-rolled steel billets are produced by further processing the hot-rolled steel. The hot-rolled steel is first cooled down to room temperature and then passed through a series of rollers at lower temperatures, typically below 1000°C (1832°F). This process provides more precise control over the dimensions and surface finish of the steel. Cold-rolled steel billets have a smoother and more polished appearance compared to their hot-rolled counterparts. In terms of physical and mechanical properties, hot-rolled steel billets tend to have a higher yield strength and lower ductility compared to cold-rolled steel. This is because the hot-rolling process causes the steel to undergo strain hardening, resulting in increased strength but reduced ability to deform without breaking. Cold-rolled steel, on the other hand, retains more of its ductility due to the controlled process of rolling at lower temperatures. Another significant difference is in the dimensional accuracy of the two types of steel billets. Hot-rolled steel billets are known to have larger dimensional tolerances, which means that there can be variations in the thickness, width, and length of the billets. In contrast, cold-rolled steel billets have tighter dimensional tolerances, resulting in more precise and consistent dimensions. In summary, the main differences between hot-rolled and cold-rolled steel billets lie in the manufacturing process, surface finish, physical and mechanical properties, and dimensional accuracy. Understanding these differences is crucial for selecting the appropriate type of steel billets for specific applications, as each type has its own advantages and disadvantages.
- Q: Can steel billets be used for making tools?
- Indeed, tools can be made using steel billets. Steel billets, which are typically hot-rolled into bars, rods, or other forms, serve as semi-finished products. These billets possess exceptional strength, durability, and resistance to wear and tear, rendering them suitable for tool manufacturing. Tools necessitate materials capable of withstanding high pressures, cutting forces, and repetitive usage, and steel billets possess the necessary qualities to fulfill these requirements. Furthermore, steel billets can undergo additional processes such as machining, forging, or heat treatment to enhance their properties, enabling the production of various tool types including wrenches, hammers, chisels, and more.
- Q: How are steel billets used in the production of mining equipment?
- Steel billets are used in the production of mining equipment as they serve as the raw materials for various components such as gears, shafts, and structural frames. These billets are shaped, machined, and welded to create strong and durable parts that can withstand the harsh conditions of mining operations.
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Hot rolled Steel Square Billets Q195 and Q235 with High Quality for Construction
- Ref Price:
-
- Loading Port:
- China main port
- Payment Terms:
- TT or LC
- Min Order Qty:
- 25000 m.t.
- Supply Capability:
- 200000 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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