• Prime quality prepainted galvanized steel 690mm System 1
  • Prime quality prepainted galvanized steel 690mm System 2
  • Prime quality prepainted galvanized steel 690mm System 3
  • Prime quality prepainted galvanized steel 690mm System 4
  • Prime quality prepainted galvanized steel 690mm System 5
  • Prime quality prepainted galvanized steel 690mm System 6
Prime quality prepainted galvanized steel 690mm

Prime quality prepainted galvanized steel 690mm

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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 690mm

 

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.

Specifications

Commodity Name: Prepainted Galvanized Steel Coil

Standard: AISI, ASTM, DIN, GB, JIS   

Grade: TDC52D+Z   

Thickness 0.13-8.0mm  

Width:600mm-1350mm

Zinc Coating:275g/m2

Polyester Coating Thickness:Top and Back coating thickness depend by Buyer Requirement.

Polyester Coating Type:2/2,1/2m,1/2.

Polyester Type: Polyester, silicone modified polyester, high durability polyester (HDP), polyvinylidene fluoride (PVDF)

Unit Roll Weight:5-20tons

Place of Origin Shanghai , China (Mainland)  

Surface Treatment :Color Coated

Manufacture Progress:HRC-CRC-GALVANIZED-COLOR COATED  

Application : Construction, electrical, transportation, steel plant, composite board plant, steel tile factory  

Payment & Shipping Terms:T/T ,L/C, and FOB CHINA 

Minimum Order Quantity: 25Tons  

Packge Type: Moisture-proof paper inner,Steel outside,Bundle by steel rope.

Package in Container : Wood as a foot pad, wire rope reinforcement,PPGI steel coil tied together by steel rope.


Q:What is the typical yield strength of a steel billet?
The yield strength of a steel billet typically varies based on its specific grade and composition. Generally, steel billets exhibit a yield strength between 300 and 500 megapascals (MPa). It should be emphasized that this is merely a broad range, and the actual yield strength may differ depending on factors such as the steel's alloying elements, heat treatment, and processing methods.
Q:How are steel billets used in the production of structural steel?
Steel billets are used as a starting material in the production of structural steel. They are heated and then passed through rolling mills to be shaped into various forms such as beams, columns, and bars. These billets serve as the raw material that undergoes further processes like cutting, bending, and welding to create the final structural steel components used in construction and other applications.
Q:How do steel billets contribute to the environmental sector?
There are several ways in which steel billets contribute to the environmental sector. Firstly, the production of steel billets often involves the recycling of scrap metal, which helps decrease the demand for raw materials and conserve natural resources. This process also reduces the energy needed for steel production, resulting in lower greenhouse gas emissions and a smaller carbon footprint. Moreover, steel billets find extensive use in construction projects, including the development of infrastructure and renewable energy installations. Steel is an incredibly durable material that can withstand harsh weather conditions and has a long lifespan. By utilizing steel billets in construction, we can create structures that require minimal maintenance and repair, reducing the necessity for frequent replacements and conserving additional resources. Furthermore, steel billets play a crucial role in the manufacturing of environmentally friendly products. Steel is a crucial component in the production of electric vehicles, wind turbines, and solar panels. These clean energy solutions aid in reducing our dependence on fossil fuels and decreasing harmful emissions, thus contributing to a cleaner and greener environment. Additionally, steel billets can be recycled once again at the end of their lifespan, further diminishing waste and minimizing the environmental impact. Recycling steel is an extremely efficient process that necessitates less energy and generates fewer emissions compared to the production of new steel from raw materials. In conclusion, steel billets contribute to the environmental sector through their recycling capabilities, durability in construction, and their role in the manufacturing of eco-friendly products. By incorporating steel billets into various industries, we can promote sustainability, conserve resources, and diminish our environmental footprint.
Q:What are the different shapes of steel billets?
Steel billets come in a variety of shapes and dimensions, depending on their intended use and production process. Some common shapes of steel billets include square, rectangular, round, and hexagonal. Square billets are typically used in the construction industry for making beams, columns, and other structural components. Rectangular billets are also used in construction but are often preferred for applications requiring a specific width-to-height ratio, such as window frames or door frames. Round billets are commonly used in the manufacturing of pipes, tubes, and shafts due to their symmetrical shape and ability to withstand torsional forces. Hexagonal billets, on the other hand, find applications in industries such as automotive and aerospace where their unique shape provides enhanced strength and stability. Overall, the shape of a steel billet is chosen based on the specific requirements of the final product and the manufacturing process involved.
Q:How are steel billets made?
Steel billets are made through a process called casting. It starts with raw materials such as iron ore, coal, and limestone being melted in a blast furnace to produce molten iron. This molten iron is then further refined in a basic oxygen furnace or an electric arc furnace to adjust its composition and remove impurities. Once the desired composition is achieved, the molten iron is poured into a continuous casting machine. This machine consists of a water-cooled copper mold that shapes the molten iron into a solid billet. As the molten iron is poured into the mold, it rapidly cools and solidifies, forming a continuous length of solid steel. The billet is then cut to the desired length and transferred to a storage area to cool down further before further processing. The cooling process is crucial as it helps in improving the billet's internal structure and overall quality. After cooling, the steel billets can undergo various treatments such as heat treatment or surface conditioning to enhance their mechanical properties and surface finish. They can also be further processed into different shapes and sizes through rolling, forging, or extrusion to meet specific customer requirements. Overall, the production of steel billets involves melting the raw materials, refining the molten iron, casting it into a continuous mold, and subsequently cooling and processing the solid billets. This process ensures the production of high-quality steel billets that serve as crucial building blocks for various industries such as construction, automotive, and manufacturing.
Q:What are the common surface defects in steel billets during reheating?
Common surface defects in steel billets during reheating include scale formation, decarburization, and oxidation. Scale formation occurs due to the reaction between the steel surface and the surrounding atmosphere, resulting in the formation of a layer of iron oxide. Decarburization is the loss of carbon content from the steel surface, leading to reduced strength and hardness. Oxidation refers to the reaction between oxygen and the steel surface, causing the formation of iron oxide and potentially weakening the material. These defects can affect the quality and performance of the steel billet if not properly addressed.
Q:What are the different types of defects that can occur in steel billets?
Steel billets can have various types of defects, which may arise during manufacturing or due to external factors. Common defects are as follows: 1. Surface defects: Scratches, pits, scabs, scale, and cracks can be found on the outer surface of the billet. These defects occur because of mishandling, improper cooling, or contamination during manufacturing. 2. Internal defects: Voids, porosity, inclusions, and segregation are defects that exist within the billet body and are not visible on the surface. They occur due to improper solidification, incorrect casting, or impurities in the steel. 3. Dimensional defects: When the billet fails to meet the desired dimensions or tolerances, dimensional defects arise. These defects include variations in length, width, thickness, or straightness. Improper rolling, uneven cooling, or equipment misalignment can cause such defects. 4. Mechanical defects: The mechanical properties of the steel billet are affected by these defects. They can include improper grain structure, low hardness, brittleness, or poor toughness. Mechanical defects occur due to improper heat treatment, incorrect alloy composition, or inadequate rolling processes. 5. Weld defects: For welded billets, defects related to the welding process can occur. Lack of fusion, incomplete penetration, porosity, or cracks in the weld zone are common weld defects. Improper welding parameters, inadequate preparation, or contamination during the welding process can cause such defects. To ensure the quality and integrity of steel billets, it is crucial to detect and address these defects. Various inspection techniques, such as visual inspection, ultrasonic testing, magnetic particle testing, or radiographic testing, can be employed to identify and classify these defects.
Q:Can steel billets be used in the manufacturing of machinery?
Yes, steel billets can be used in the manufacturing of machinery. Steel billets are semi-finished products that can be further processed into various shapes and sizes for different applications. In machinery manufacturing, steel billets are often used as raw materials to produce components such as gears, shafts, and structural frames. The high strength and durability of steel make it an ideal choice for machinery that requires robust construction and reliable performance.
Q:What are the different types of surface defect detection equipment for steel billets?
There are various types of surface defect detection equipment available for steel billets. These equipment are designed to identify and analyze defects on the surface of steel billets, ensuring that only high-quality products are used in various applications. Some of the different types of surface defect detection equipment for steel billets include: 1. Ultrasonic Testing (UT): UT equipment uses sound waves to detect surface defects in steel billets. It emits high-frequency sound waves that penetrate the material and reflect back when they encounter any surface irregularities. This method helps identify cracks, voids, and other defects on the surface. 2. Eddy Current Testing (ECT): ECT equipment uses electromagnetic induction to detect surface defects in steel billets. It works by passing an alternating current through a coil, generating a magnetic field that interacts with the conductive material of the billet. Any surface defect or irregularity will cause a change in the magnetic field, which can be measured and analyzed. 3. Magnetic Particle Inspection (MPI): MPI equipment uses magnetic fields and iron particles to detect surface defects in steel billets. The billet is magnetized, and iron particles are applied to its surface. These particles will gather around any surface defect, creating visible indications that can be easily identified and evaluated. 4. Visual Inspection: Visual inspection equipment involves the use of cameras, lasers, and other optical devices to detect surface defects in steel billets. These devices capture images or videos of the billet's surface and allow inspectors to identify any irregularities or defects visually. 5. Thermographic Testing: Thermographic equipment uses infrared cameras to detect surface defects in steel billets by measuring the temperature variations. Any defect will cause a difference in heat transfer, resulting in distinct thermal patterns that can be detected and analyzed. 6. X-ray Inspection: X-ray inspection equipment uses X-ray radiation to penetrate the steel billet and detect internal and surface defects. It provides detailed images that allow inspectors to identify cracks, voids, and other defects that are not visible to the naked eye. Overall, these different types of surface defect detection equipment for steel billets offer a range of methods to ensure the quality and integrity of the billets, enabling manufacturers to deliver high-quality steel products to various industries.
Q:Are steel billets used in the production of electrical transmission towers?
Yes, steel billets are commonly used in the production of electrical transmission towers. Steel billets are the initial form of the steel used in the manufacturing process. They are typically hot rolled into various shapes and sizes, including the sections and components necessary for constructing transmission towers. The high strength and durability of steel makes it an ideal material for these structures, as they need to withstand harsh environmental conditions and support heavy electrical conductors. Furthermore, steel offers excellent electrical conductivity properties, which is crucial for the efficient transmission of electricity through the towers. Overall, steel billets play a crucial role in the production of electrical transmission towers, ensuring the strength, durability, and efficiency of these structures.

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