Prime quality prepainted galvanized steel 615mm
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 100 m.t.
- Supply Capability:
- 10000 m.t./month
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Quality Product, Order Online Tracking, Timely Delivery
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Construction building material galvanized color prepainted cold
rolled steel coil
Prepainted steel sheet is coated with organic layer, which provides higher anti-corrosion property and
a longer lifespan than that of galvanized steel sheets.
The base metals for prepainted steel sheet consist of cold-rolled, HDG electro-galvanized and hot-dip
Alu-zinc coated. The finish coats of prepainted steel sheets can be classified into groups as follows:
polyester, silicon modified polyesters, polyvinylidene fluoride, high-durability polyester, etc
Standard and Grade :
Pre-paint galvanized steel coil | ||||
ASTM A755M-03 | EN10169:2006 | JISG 3312-2012 | ||
Commercial quality | CS | DX51D+Z | CGCC | |
Structure steel | SS GRADE 230 | S220GD+Z | CGC340 | |
SS GRADE 255 | S250GD+Z | CGC400 | ||
SS GRADE 275 | S280GD+Z | CGC440 | ||
SS GRADE 340 | S320GD+Z | CGC490 | ||
SS GRADE550 | S350GD+Z | CGC570 | ||
S550GD+Z | ||||
Application:
Outdoor | Roof, roof structure, surface sheet of balcony, frame of window, door of garage, rolled shutter door, booth, Persian blinds, cabana, etc |
Indoor | Door, isolater, frame of door, light steel structure of house, home electronic appliances, ect. |
- Q: What are the different types of shearing machines used for steel billets?
- There are several types of shearing machines used for steel billets, including hydraulic shears, mechanical shears, and rotary shears. Hydraulic shears use hydraulic power to provide a smooth and powerful cutting action, while mechanical shears rely on a mechanical lever system for cutting. Rotary shears, on the other hand, operate by rotating the cutting blades to shear the steel billets. These different types of shearing machines offer various advantages and are used depending on the specific requirements of the steel billet cutting process.
- Q: How are steel billets heat-treated?
- Steel billets are heat-treated using a process called annealing or quenching and tempering. Annealing involves heating the steel billets to a specific temperature and then slowly cooling them down. This process helps to relieve any internal stresses and improve the overall ductility and toughness of the steel. Quenching and tempering, on the other hand, involves heating the steel billets to a high temperature and then rapidly cooling them by immersing them in a quenching medium, such as water or oil. This rapid cooling creates a hard and brittle structure in the steel, which is then tempered by reheating the billets to a lower temperature. This tempering process helps to reduce the brittleness and increase the toughness of the steel billets. The specific heat treatment process used depends on the desired properties and applications of the steel billets.
- Q: What is the global production capacity of steel billets?
- The global production capacity of steel billets is difficult to estimate accurately as it varies from year to year and is influenced by factors such as market demand, economic conditions, and technological advancements. However, according to the World Steel Association, the total global production capacity for steel billets was approximately 1.86 billion metric tons in 2019. This capacity is spread across various countries and steel-producing regions, with China being the largest producer followed by India, Japan, and the United States. It is important to note that these figures are subject to change as the steel industry continues to evolve and expand.
- Q: What are the different types of steel billet inspection equipment?
- The manufacturing industry utilizes various types of steel billet inspection equipment to guarantee the quality and integrity of the billets before further processing. These equipment are specifically designed for this purpose. 1. High-frequency sound waves are employed by Ultrasonic Testing (UT) Equipment to detect internal flaws or defects in the steel billets. It can identify cracks, voids, and other imperfections that may impact the final product's strength and performance. 2. Magnetic Particle Inspection (MPI) Equipment utilizes a magnetic field and specially formulated particles to identify surface and near-surface defects in the steel billets. It can uncover cracks, seams, and other imperfections that may not be visible to the naked eye. 3. Eddy Current Testing (ECT) Equipment uses electromagnetic induction to identify surface cracks and defects in the steel billets. It can detect variations in electrical conductivity caused by localized defects or changes in material properties. 4. Visual Inspection Equipment makes use of magnifying glasses, microscopes, and cameras to visually examine the steel billets for surface defects, irregularities, or other visual abnormalities. This equipment is often used together with other inspection methods for a comprehensive analysis. 5. Dimensional Measurement Equipment is employed to measure the dimensional accuracy and consistency of the steel billets. It includes tools such as calipers, micrometers, and laser scanners to ensure that the billets meet the required specifications and tolerances. 6. Surface Roughness Measurement Equipment quantifies the surface finish of the steel billets. It utilizes a stylus or laser to measure surface irregularities, providing crucial information about the billet's suitability for further processing. 7. X-ray Testing Equipment uses electromagnetic radiation to penetrate the steel billets and detect internal defects such as cracks, voids, or inclusions. This method is particularly effective for larger billets or when a comprehensive assessment of the internal structure is necessary. These are some of the commonly utilized steel billet inspection equipment in the manufacturing industry. Each type of equipment plays a vital role in ensuring that the steel billets meet the required quality standards and are appropriate for further processing into various end products.
- Q: How do steel billets contribute to the manufacturing of industrial equipment?
- Steel billets are a crucial raw material in the manufacturing of industrial equipment as they serve as the starting point for various metal fabrication processes. These billets are heated, shaped, and further processed to create components such as gears, shafts, plates, and frames that form the backbone of industrial machinery. Their high strength, durability, and versatility make steel billets an essential ingredient in producing robust and reliable equipment for industries ranging from construction and mining to automotive and energy.
- Q: What are the main factors that determine the sustainability of steel billets production?
- Several key factors determine the sustainability of steel billets production. Firstly, the choice of raw material source plays a crucial role. Utilizing recycled scrap metal as the primary raw material reduces the need for new mining and extraction of iron ore, thus minimizing the environmental impact associated with resource extraction. Secondly, sustainability is influenced by energy consumption during the production process. Given that steel production is energy-intensive, the type of energy sources utilized greatly impacts sustainability. The adoption of renewable energy, such as solar or wind power, can significantly reduce the carbon footprint of steel billets production. Thirdly, the efficiency of production processes and technologies employed is vital for sustainability. Modern technologies, like electric arc furnaces, offer higher energy efficiency and emit fewer greenhouse gases compared to traditional blast furnaces. Additionally, implementing waste heat recovery systems and optimizing material usage further enhances the sustainability of steel billets production. Proper management of by-products and waste generated during production is another crucial factor. Ensuring appropriate handling, treatment, and disposal of by-products and waste materials, such as slag and dust, is essential to minimize environmental pollution and ensure sustainability. Furthermore, the overall sustainability of steel billets production is influenced by the adoption of responsible and ethical practices throughout the supply chain. This includes upholding labor rights, maintaining health and safety standards, and engaging with the community. Lastly, regulatory frameworks and government policies have a significant impact on sustainability. Stringent environmental regulations, support for clean technologies, and incentives for sustainable practices can encourage the industry to adopt more environmentally friendly production methods. In conclusion, the sustainability of steel billets production is determined by factors such as the raw material source, energy consumption, production processes, waste management, ethical practices, and regulatory frameworks. By addressing these factors, the steel industry can strive towards more sustainable and environmentally friendly production practices.
- Q: What are the different types of steel billet heat treatment processes?
- There are several types of steel billet heat treatment processes, including annealing, normalizing, quenching, and tempering. Annealing involves heating the billet to a high temperature and then slowly cooling it to relieve internal stresses and improve its ductility. Normalizing is similar to annealing but involves cooling the billet in still air to achieve a more uniform grain structure. Quenching is a rapid cooling process that involves immersing the billet in a quenching medium, such as water or oil, to achieve high hardness and strength. Tempering follows quenching and involves reheating the billet to a lower temperature to reduce brittleness and enhance toughness.
- Q: What are the main differences between hot-rolled and cold-rolled steel billets?
- Hot-rolled and cold-rolled steel billets differ primarily in their manufacturing processes and resulting steel characteristics. To produce hot-rolled steel billets, the steel is heated above its recrystallization temperature, typically around 1200°C (2200°F), and then rolled into the desired shape or size. This involves the use of large-scale machinery, such as rolling mills, which apply significant pressure to shape the steel. Consequently, hot-rolled steel billets have a rough and scaled surface. On the contrary, cold-rolled steel billets are created by further processing the hot-rolled steel. The hot-rolled steel is cooled to room temperature and then passed through a series of rollers at lower temperatures, usually below 1000°C (1832°F). This process offers more precise control over the dimensions and surface finish of the steel. As a result, cold-rolled steel billets exhibit a smoother and more polished appearance compared to their hot-rolled counterparts. Regarding physical and mechanical properties, hot-rolled steel billets generally possess higher yield strength but lower ductility compared to cold-rolled steel. This is due to the hot-rolling process causing strain hardening in the steel, resulting in increased strength but reduced ability to deform without breaking. In contrast, cold-rolled steel retains more ductility as a result of the controlled rolling process at lower temperatures. Another significant distinction lies in the dimensional accuracy of the two steel billet types. Hot-rolled steel billets are known to have larger dimensional tolerances, meaning there can be variations in their thickness, width, and length. Conversely, cold-rolled steel billets possess tighter dimensional tolerances, leading to more precise and consistent dimensions. In summary, the primary differences between hot-rolled and cold-rolled steel billets stem from the manufacturing process, surface finish, physical and mechanical properties, and dimensional accuracy. Understanding these disparities is crucial when selecting the appropriate type of steel billets for specific applications, as each type offers its own advantages and disadvantages.
- Q: What are the different types of rolling processes used for shaping steel billets?
- There are several different types of rolling processes used for shaping steel billets. Some of the commonly used processes include hot rolling, cold rolling, ring rolling, and skew rolling. Each process has its own advantages and is suitable for specific applications. Hot rolling involves heating the steel billet to a high temperature and then passing it through a series of rollers to shape it. Cold rolling, on the other hand, is performed at room temperature and is used to achieve tighter tolerances and improved surface finish. Ring rolling is used to produce seamless rings by gradually shaping the billet using a combination of axial and radial forces. Skew rolling is a specialized process used for producing balls or cylindrical shapes by rotating the billet at an angle to the rolling direction. Overall, these rolling processes offer various techniques to shape steel billets according to specific requirements.
- Q: How are steel billets used in the construction of bridges?
- Due to their exceptional strength and durability, steel billets play a crucial role in bridge construction. These cylindrical pieces of raw steel are heated and shaped into various structural components, such as beams, columns, and girders, which serve as the foundation of bridge structures. The initial step in utilizing steel billets for bridge construction involves heating them in a furnace to make them malleable. Once the desired temperature is reached, the billets are passed through a series of rollers to shape them into the required sections. This process, referred to as hot rolling, guarantees that the steel achieves the necessary strength and structural integrity. Following this, the shaped steel billets undergo further processing and fabrication to form different bridge components. For example, beams are created by cutting and welding steel billets together to form long, horizontal members that bear the weight of the bridge deck. These beams are designed to withstand heavy loads and provide stability to the entire structure. On the other hand, columns are vertical members that transfer the load from the bridge deck to the foundations. Steel billets are shaped and joined together to construct these load-bearing columns, ensuring they possess the required strength to endure compression forces. Girders also play a vital role in bridge construction, serving as horizontal supports that span across the width of the bridge. Steel billets are shaped into girders, which are then fabricated and connected to the bridge's piers or abutments. These girders provide the necessary strength to evenly distribute the weight of the bridge deck. Aside from their strength, steel billets offer several advantages in bridge construction. They possess a high resistance to corrosion, guaranteeing the durability and longevity of the bridge structure. Additionally, steel billets are highly versatile, allowing engineers to create various shapes and sizes, enabling the design of bridges that meet specific project requirements. Overall, steel billets are extensively utilized in bridge construction due to their strength, durability, and versatility. They form the foundation of bridge structures, providing the necessary support and stability to ensure the safe and efficient transportation of people and goods.
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Prime quality prepainted galvanized steel 615mm
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 100 m.t.
- Supply Capability:
- 10000 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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