• Prime quality prepainted galvanized steel 630mm System 1
  • Prime quality prepainted galvanized steel 630mm System 2
  • Prime quality prepainted galvanized steel 630mm System 3
  • Prime quality prepainted galvanized steel 630mm System 4
  • Prime quality prepainted galvanized steel 630mm System 5
  • Prime quality prepainted galvanized steel 630mm System 6
Prime quality prepainted galvanized steel 630mm

Prime quality prepainted galvanized steel 630mm

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Loading Port:
Tianjin
Payment Terms:
TT OR LC
Min Order Qty:
100 m.t.
Supply Capability:
10000 m.t./month

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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

Prime quality prepainted galvanized steel 630mm

 

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 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 different surface defects found in tool steel billets?
There are several different surface defects that can be found in tool steel billets. These defects can occur during the manufacturing process or can be the result of handling, transportation, or storage. Some of the common surface defects found in tool steel billets include: 1. Decarburization: This defect occurs when the surface of the steel billet loses its carbon content due to exposure to high temperatures during heat treatment or improper cooling. Decarburization can lead to reduced hardness and wear resistance in the tool steel. 2. Scale: Scale refers to the formation of oxide layers on the surface of the steel billet. It can occur during the hot rolling process or due to exposure to high temperatures. Scale can negatively impact the surface finish and can also affect the mechanical properties of the tool steel. 3. Cracks: Cracks can occur on the surface of tool steel billets due to various reasons such as improper cooling, excessive stress during hot rolling, or quenching. These cracks can be either surface cracks (which are visible) or internal cracks (which may not be immediately visible). 4. Inclusions: Inclusions are non-metallic particles or impurities that are trapped within the steel billet during the manufacturing process. These inclusions can cause weak spots or discontinuities in the material, leading to reduced toughness and fatigue resistance. 5. Pitting: Pitting refers to the formation of small holes or cavities on the surface of the steel billet. It can be caused by localized corrosion, exposure to aggressive environments, or improper handling. 6. Roll marks: Roll marks are surface imperfections that occur due to the contact between the steel billet and the rolls during the hot rolling process. These marks can appear as grooves, scratches, or indentations on the surface of the tool steel. 7. Surface contamination: Tool steel billets can get contaminated with foreign substances such as dirt, oil, grease, or other particles during handling, transportation, or storage. These contaminants can negatively affect the surface finish and can also lead to corrosion or other defects. It is important to detect and address these surface defects in tool steel billets to ensure the desired performance and reliability of the final tooling products. Various inspection techniques and quality control measures are employed to identify and mitigate these defects, such as visual inspection, ultrasonic testing, magnetic particle inspection, and surface cleaning processes.
Q:What is the role of steel billets in the manufacturing of structural steel bridges?
Steel billets play a crucial role in the manufacturing of structural steel bridges. These billets are essentially semi-finished products that serve as the raw material for the production of various steel products, including structural steel bridges. The process begins with steel billets being heated and then passed through a series of rolling mills to shape them into the desired form. This rolling process ensures that the billets are transformed into long, slender sections that can be utilized in the construction of bridges. Once the steel billets have been rolled into the appropriate shapes, they are then further processed and fabricated to create the necessary components for structural steel bridges. These components can include beams, columns, girders, and other critical elements that provide strength, stability, and load-bearing capabilities to the bridge structure. The use of steel billets in the manufacturing of structural steel bridges offers several advantages. Firstly, steel is known for its exceptional strength-to-weight ratio, making it an ideal material for constructing bridges that can withstand heavy loads while remaining relatively lightweight. The versatility of steel also allows for the creation of complex bridge designs, accommodating different architectural and engineering requirements. Additionally, steel billets are highly durable and resistant to environmental factors such as corrosion, which is crucial for ensuring the long-term integrity and safety of the bridge structure. This durability contributes to the overall longevity of the bridge, reducing maintenance and replacement costs over time. In summary, steel billets serve as the foundation for the production of structural steel bridges. Through the rolling and fabrication processes, these billets are transformed into the various components that make up the bridge structure, providing strength, stability, and durability. The use of steel billets enables the construction of bridges that can withstand heavy loads, remain lightweight, and withstand environmental factors, ensuring the long-term integrity and safety of the bridge.
Q:Can steel billets be used in the production of industrial equipment?
Yes, steel billets can be used in the production of industrial equipment. Steel billets are the raw material that can be further processed and shaped into various forms such as plates, sheets, rods, and bars. These processed steel products are commonly used in the manufacturing of industrial equipment due to their strength, durability, and suitability for machining and welding processes.
Q:What are the main challenges in the recycling of steel billets?
The recycling of steel billets, which are semi-finished steel products, poses several challenges. The main challenges in the recycling of steel billets include: 1. Contamination: Steel billets can become contaminated with various materials during their use, such as oil, grease, paint, or other metals. Removing these contaminants and ensuring the purity of the recycled steel can be a complex and costly process. 2. Sorting and segregation: Steel billets come in different grades and sizes, and they need to be sorted and segregated accordingly for effective recycling. This requires advanced sorting technologies and manual labor to ensure the right billets are recycled in the appropriate manner. 3. Energy consumption: The recycling of steel billets involves melting and reprocessing the steel, requiring significant energy inputs. This energy consumption can be a challenge as it contributes to greenhouse gas emissions and increases the overall environmental impact of the recycling process. 4. Infrastructure and logistics: The collection, transport, and processing of steel billets require a well-developed infrastructure and logistics network. The lack of adequate facilities or transportation can hinder the efficient recycling of steel billets. 5. Economic viability: The economic viability of recycling steel billets can be a challenge, especially when the cost of recycling exceeds the value of the recycled material. This can discourage recycling efforts and lead to a higher reliance on primary steel production. 6. Consumer awareness and participation: Educating consumers about the importance of recycling steel billets and encouraging their participation in recycling programs is crucial. Lack of awareness and apathy towards recycling can hinder the collection of steel billets for recycling purposes. 7. International trade barriers: In some cases, trade barriers and import/export restrictions can affect the recycling of steel billets. These barriers can limit the flow of recycled steel billets across different countries, impacting the overall recycling capacity and market dynamics. Addressing these challenges requires a collaborative effort between industries, governments, and consumers. Investments in research and development, technology advancements, and policy support can help overcome these challenges and promote the sustainable recycling of steel billets.
Q:What are the potential applications of steel billets in the food and beverage sector?
Due to their unique properties, steel billets offer a wide range of potential applications in the food and beverage sector. One possible use is for constructing food processing equipment. Steel billets can be transformed into mixers, blenders, and conveyors, which are vital in the food processing industry. The exceptional strength and durability of steel make it an ideal material for withstanding the demanding conditions of food production. Another potential application is in the manufacturing of storage containers and tanks for food and beverage preservation. Steel billets can be converted into corrosion-resistant containers that are safe for storing liquids and food products. These containers are commonly utilized in breweries, wineries, and other beverage production facilities for storing ingredients, fermenting products, and finished goods. Additionally, steel billets can be employed in the construction of food transportation systems. Trucks and trailers that transport perishable goods often require sturdy and durable frames to ensure the products' safety and integrity. Steel billets can be utilized to manufacture these frames, providing a reliable and secure means of transportation for food and beverage products. Moreover, steel billets can be utilized in the construction of food service equipment, such as commercial ovens, grills, and fryers. These appliances necessitate materials that can withstand high temperatures and maintain their structural integrity over extended periods of use. Steel billets, with their exceptional heat resistance and strength, can fulfill these requirements, making them suitable for the foodservice industry. In conclusion, the potential applications of steel billets in the food and beverage sector are extensive. Whether it is for food processing equipment, storage containers, transportation systems, or food service equipment, steel billets provide the necessary strength, durability, and corrosion resistance to ensure the safety and efficiency of food production and distribution processes.
Q:What is alpha carbon? What is beta carbon?
The method of marking C is generally used in organic matter, and the C atom directly connected with the functional group is called alpha carbon. The C atom separated from the functional group is called C beta atom, and alpha carbon and beta carbon are not unique
Q:What are the specifications for tool steel billets used in the tooling industry?
Tool steel billets used in the tooling industry typically have specific specifications to ensure optimal performance and durability. These specifications include: 1. Composition: Tool steel billets are made from specific alloy compositions that provide high hardness, wear resistance, and toughness. Common elements found in tool steel include carbon, chromium, vanadium, molybdenum, and tungsten. 2. Hardness: Tool steel billets are heat-treated to achieve a desired hardness level, typically measured in Rockwell hardness (HRC). The hardness required depends on the specific application and the type of tool being produced. 3. Size and shape: Tool steel billets come in various sizes and shapes, such as rectangular or round bars, to cater to different tooling requirements. The dimensions of the billets are chosen based on the size and complexity of the tool being manufactured. 4. Surface finish: Tool steel billets should have a smooth and clean surface finish to ensure easy machining and minimize the risk of defects or imperfections in the final tooling product. 5. Tolerance: The billets should be manufactured with tight dimensional tolerances to ensure consistency during the machining and tooling processes. This helps in achieving precise tool dimensions and minimizing wastage. 6. Homogeneity: Tool steel billets should have uniform chemical composition and microstructure throughout to ensure consistent mechanical properties and performance of the final tooling products. 7. Heat treatment properties: The billets should have good heat treatment properties, including the ability to be hardened and tempered, to enhance their strength, toughness, and wear resistance. 8. Machinability: Tool steel billets should have good machinability to allow for efficient shaping and forming processes during tool manufacturing. This includes considerations for cutting forces, chip formation, and surface finish. It is important to note that the specific specifications for tool steel billets can vary depending on the application and the type of tool being produced. Manufacturers and tooling experts often work closely together to determine the most suitable tool steel specifications for each specific tooling requirement.
Q:How are steel billets recycled?
Steel billets are recycled through a process called electric arc furnace (EAF) steelmaking. In this process, the steel billets, which are large solid blocks of steel, are melted down in an electric arc furnace. Once melted, impurities are removed, and the molten steel is then poured into molds to form new billets. These recycled steel billets can be used to produce various steel products, reducing the need for raw materials and minimizing waste.
Q:How are steel billets used in the production of oil and gas machinery?
The production of oil and gas machinery heavily relies on steel billets. These billets are essentially semi-finished pieces of steel that undergo further processing to produce various components needed in the oil and gas industry. To begin with, steel billets are essential in manufacturing the key structural components of oil and gas machinery, such as frames, bases, and casings. These components provide the necessary strength, stability, and support to the equipment, ensuring their safe and efficient operation even in harsh operating conditions. Furthermore, steel billets are also utilized in the production of critical rotating parts, including shafts, gears, and turbines. These components experience high loads, intense pressure, and extreme temperatures, making exceptional strength and durability a requirement. Steel billets, known for their superior mechanical properties, are an ideal material for manufacturing such parts. In addition, steel billets are employed in the production of valves, fittings, and connectors that are integral to oil and gas machinery. These components are responsible for controlling the flow of oil or gas, regulating pressure, and ensuring secure connections between various equipment and pipelines. Steel billets are chosen for these applications due to their excellent corrosion resistance, which is crucial in environments where oil and gas are present. Moreover, steel billets find application in the fabrication of heat exchangers and pressure vessels used in the oil and gas industry. Heat exchangers play a vital role in cooling or heating fluids, while pressure vessels store and transport hazardous substances safely. Steel billets are preferred for these applications due to their high thermal conductivity, excellent weldability, and resistance to extreme pressures. In summary, steel billets are extensively utilized in the production of oil and gas machinery because of their exceptional mechanical properties, corrosion resistance, and thermal conductivity. These billets provide the necessary strength, durability, and reliability to the components and equipment required in the oil and gas industry, ensuring safe and efficient operations in this critical sector.

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