COATED STEEL COIL

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Loading Port:: Shanghai

Payment Terms:: TT OR LC

Min Order Qty:: -

Supply Capability:: 10000 m.t./month

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PREPAINTED GALVANIZED STEEL COILS
ZINC COATING:60g/m2 (-/+10g/m2)
COLOR: ACCORDING TO COLOR SAMPLE.
TOP COATING:5+13 MICRON, BACK COATING:5-7 MICRON;
COIL WEIGHT:3-5 ton
STANDARD:JIS G 3312
STEEL GRADE:CGCC
COIL ID:508mm

THICKNESS:0.2MM-1.8MM

WIDTH:800MM-1250MM

MIN.ORDER:50TON

PRODUCTION TIME:30DAYS AFTER RECEIVED DOWN PAYMENT OR CORRECT LC.

TOLERANCE:WIDTH 0,+3 MM,THICKNESS:+/-0.02MM,ZINC COATING:+/-15G/M2.COATING:-/+2MIC.

Q:like the steel industry and the effects it had on industrial growth, 10 points!: The single most important important advance in steel production was learning to accurately control carbon content. This was done through the Bessemer Process in which air was blown through molten iron to burn out impurities and excess carbon. Low carbon iron (wrought iron) could be easily worked into shapes. Medium carbon iron could be cast into useful and durable shapes. High carbon steel could be used for structural uses (beams and girders). Adding alloys such as nickel and silicon could produce very tough steels and steels resistant to rust. Adding vanadium to steel engine parts allowed Ford to produce finely machined engines in huge numbers with existing machinery.

Q:I have some steel wool and a charged 9V Battery, when I connect 2 wires to the battery, then touch the wool with the ends of the wires the wool instantly starts burning, but when I connect 2 wires to the piece of steel wool (a new piece not same one of course) and touch the battery with the ends of the wire nothing happens (see image...): What's happening in the first case is that the initial contact of the wire to the steel wool is not very good and there is a high resistance as the touch is made and there is probably a slight spark that starts the steel wool burning. Now it is even harder to make good contact and the process continues. In the second case there is initially a good contact to the steel wool and there is no spark when the circuit is completed at the battery. It would be difficult to cause the heating and the spark at a distance unless you had a way to remotely cause the wire to lightly touch the steel wool. A gas lighter which uses a flint to create a spark is good for igniting a gas burner which will continue to burn by itself, but probably wouldn't cause the steel wool to burn without the energy coming from the battery to keep it going. Steel wool WILL continue to burn if it's in a pure oxygen atmosphere. You might try hooking the battery up to the steel wool as in the second case and using a spark lighter to start some burning close to one of the wire connections to see if the extra battery power might keep the burning going.

Q:How do steel coils perform in corrosive environments?: Steel coils exhibit excellent performance in corrosive environments due to their inherent resistance to corrosion. This is primarily because steel, being composed of iron and various elements like carbon, produces a protective layer called a passive film. This passive film acts as a barrier between the steel surface and corrosive elements, effectively preventing direct contact and minimizing the risk of corrosion. Moreover, steel coils can be coated with different protective coatings to enhance their corrosion resistance. Coatings like zinc or epoxy provide an additional layer of protection, significantly prolonging the lifespan of steel coils in corrosive environments. However, it is important to acknowledge that the performance of steel coils in corrosive environments can still be influenced by factors such as the type of corrosive agent, duration of exposure, and presence of other contaminants. In highly aggressive environments, such as those with high humidity, exposure to saltwater, or acidic chemicals, the protective layers on steel coils might deteriorate over time, thereby increasing the potential for corrosion. To ensure optimal performance in corrosive environments, it is advisable to choose steel coils with corrosion-resistant properties, such as stainless steel or galvanized steel. Regular maintenance and inspections are also crucial to promptly detect any signs of corrosion and implement appropriate measures to prevent further damage. In conclusion, steel coils generally exhibit good resistance to corrosion in most environments, but the severity of the corrosive conditions can ultimately impact their performance.

Q:and what are the four main elements in STAINLESS steel? x: decreasing the carbon content fabric will strengthen the ductility, which will make it greater versatile. Carbon in metallic varieties brittle cementite (iron carbide) which will strengthen the hardness and capability of metallic.

Q:What are the different types of steel coil treatments?: There are several different types of steel coil treatments that are used to enhance the properties and performance of steel coils. These treatments include: 1. Annealing: Annealing is a heat treatment process that involves heating the steel coil to a specific temperature and then slowly cooling it. This treatment helps to relieve internal stresses, improve ductility, and increase the overall strength of the steel coil. 2. Pickling: Pickling is a chemical treatment that involves immersing the steel coil in a solution of acid or other chemicals to remove impurities, scale, and rust from the surface. This treatment helps to improve the surface finish and cleanliness of the steel coil. 3. Oil coating: Oil coating is a treatment that involves applying a thin layer of oil or other protective coating to the surface of the steel coil. This treatment helps to prevent corrosion, improve lubricity, and protect the steel coil during storage and transportation. 4. Galvanizing: Galvanizing is a process that involves coating the steel coil with a layer of zinc to protect it from corrosion. This treatment creates a barrier between the steel coil and the surrounding environment, ensuring long-term durability and resistance to rust. 5. Tempering: Tempering is a heat treatment process that involves heating the steel coil to a specific temperature and then rapidly cooling it. This treatment helps to improve the toughness and strength of the steel coil, making it more resistant to impact and deformation. These are just a few examples of the different types of steel coil treatments that are commonly used. Each treatment has its own specific purpose and benefits, and the choice of treatment will depend on the desired properties and application of the steel coil.

Q:What are the challenges in coil leveling for coated steel?: To achieve high-quality, flat, and smooth coils, several challenges must be addressed in the process of coil leveling for coated steel. The first challenge lies in the potential damage to the coating during leveling. Coated steel coils are typically covered with materials like zinc or paint, which are susceptible to scratching or marring if mishandled. The leveling process involves passing the coil through a series of rolls, which can cause friction, abrasion, or other mechanical harm to the coating. Therefore, it is crucial to meticulously control the speed, pressure, and alignment of the rolls to minimize coating damage. The second challenge stems from the variations in thickness across the coil. Coated steel coils often exhibit thickness discrepancies due to inherent material properties or production methods. These variations can lead to uneven leveling, resulting in coils with waviness or inconsistent flatness. Achieving uniform leveling across the entire coil surface is vital to ensure consistent quality and appearance of the final product. Another challenge in coil leveling for coated steel is the possibility of shape distortion. The coating processes can introduce stresses into the steel, causing the coil to warp or distort during leveling. This distortion can lead to coils with irregular edges or uneven flatness. Proper control of leveling process parameters, such as the number of passes and applied tension, is necessary to minimize shape distortion. Furthermore, the coil leveling process can generate internal stresses in the steel, especially in cold-rolled or heat-treated coated steels. These internal stresses can result in coil spring-back, where the coil attempts to revert to its original shape after leveling. Spring-back can cause coils with undesired curvature or inconsistent flatness. Effective strategies, such as stress relief annealing or employing counteracting leveling techniques, are essential to minimize spring-back and achieve the desired flatness. Lastly, handling and storing coated steel coils pose challenges in maintaining the quality of the leveled coils. Coated steel coils are sensitive to environmental conditions, such as humidity, temperature, and exposure to corrosive substances. Proper storage and handling practices are crucial to prevent coating damage, rust, or other forms of deterioration that can occur during transportation or storage. In conclusion, the challenges in coil leveling for coated steel involve minimizing coating damage, addressing thickness variation, controlling shape distortion and spring-back, and ensuring proper handling and storage. Overcoming these challenges necessitates precise control of process parameters, the application of suitable leveling techniques, and strict adherence to quality control measures throughout the entire process.

Q:What are the different types of steel coil storage methods?: There are several different types of steel coil storage methods, including vertical stacking, horizontal stacking, coil cradles, and coil racks.

Q:What are the dimensions of steel coils used in the metalworking tool industry?: The metalworking tool industry has a wide range of dimensions for steel coils, which can vary depending on the specific application and requirements of the tool. However, there are certain dimensions that are commonly observed in this industry. Steel coils used in metalworking tools typically come in different widths, ranging from 24 inches to 72 inches. The thickness of the coils can also vary, with common thicknesses ranging from 0.020 inches to 0.250 inches. Moreover, the length of the coils can vary significantly, with standard lengths usually falling between 100 feet and 2000 feet or even more. These dimensions are selected based on several factors, such as the type of metal being worked, the specific tool being used, and the desired outcome of the metalworking process. Additionally, other factors like the weight and handling capabilities of the tool, as well as the efficiency of the manufacturing process, may also influence the dimensions of the steel coils used. To ensure the appropriate dimensions for steel coils in the metalworking tool industry, it is essential to consult with manufacturers, suppliers, or industry experts. This is crucial because these dimensions can vary based on specific needs and preferences.

Q:Which is used for what?Differences as far as style etc.???Better in your opinion and why??I'm just beginning to look at guitars i might be able to get at christmas if i'm still committed..i've been looking online.,,,,NYLON or STEEL STRINGED ACOUSTIC GUITAR????Thanks.: Nylon stringed guitars are almost always intended for classical and flamenco guitar styles. You might see the occasional performer using one for folk, and of course Willie Nelson is famous for his nylon string sound in the country genre. The strings can be easier on a beginners fingers but you will find much less selection than with steel string guitars. Nylon has a mellower sound than steel, and good ones sound amazingly rich and full. Classical guitarists use their fingernails instead of picks to get more varied texture out of the guitar, but you can safely use a pick. Steel stringed guitars are what you are seeing and hearing most if you listen to pop, rock, country, folk, etc. There will be a much wider selection of beginner instruments to choose from. ( and some of them will be horrible!) The strings can be tougher on your fingers until you build up callouses, but that only takes a month or so. A steel string guitar will sound correct in a wider range of music, but will never sound as good at classical music as nylon. Bottom line: you can learn on either style guitar, but unless you are planning to go into classical or flamenco guitar, go with steel. In either case, don't get the cheapest one out there. It's a real case of you-get-what-you-pay-for. A cheap one will be harder to play and keep in tune.

Q:How are steel coils used in the manufacturing of mining equipment?: Steel coils are used in the manufacturing of mining equipment for various purposes, such as forming the structural components, building frames, and creating durable and robust machinery. These coils are often shaped, cut, and welded to construct mining machinery that can withstand the harsh conditions and heavy-duty operations in the mining industry.

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