Galvanized Steel Coil Cold Rolled CS Type B CNBM

Galvanized Steel Coil Cold Rolled CS Type B CNBM

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Loading Port:: Guangzhou

Payment Terms:: TT OR LC

Min Order Qty:: 20 m.t.

Supply Capability:: 3000 m.t./month

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2.Packaging & Delivery

Packaging Details:	standard package
Delivery Detail:	1-4 week

3.Feature

galvanized coil steel
cold rolled galvanizing steel coil
galvanized iron steel coil

4.Specifications

Thickness	0.15mm--2.0mm
Width	50--1250mm
Zinc Coating	40gsm—275gsm
Spangle	Big, small regular spangle and zero spangle
Surface Treatment	Chromate, Galvanized, Skin Pass, Passivity and Oiled(un-oiled)
ID	508mm or 610mm
Coil Weight	3--7 Metric Tons and as requirements
Production	12,000 metric tons per month
More information of Galvanized Steel Coils/GI/PPGI/HDG
Payment Term	T/T or L/C (We usually charge 30% of the deposit first.)
Delivery Port	Qingdao Port or Tianjin Port
Delivery Time	Within 20 days after receipt of T/T or L/C
MOQ	25 metric tons or one 20 feet container
Application	General use, Color coating, Corrugated Roofing making, Outside of the buildings Structure, Deep Drawing and etc.
Ambition	Reliable product, Competitive price, On-time delivery and High standard service.

5.What is the application of Steel Coil?

There are two sides,one is out side: Workshop, agricultural warehouse, residential precast unit, corrugated roof, roller shutter door, rainwater drainage pipe, retailer booth;the other is inside: Door, doorcase, light steel roof structure, folding screen, elevator, stairway, vent gutter.

Q: I want to make an object out of stainless steel. Initially, I had planned to get it cut out of stainless steel sheet but several of the edges need to be rounded and I think it would be much cheaper to get it made of cast iron formed in a mold.Yet, it must be stainless steel. Can stainless steel be formed in a mold like iron can ... i.e. poured in liquid form into a mold and harden into shiny stainless steel?Would a regular foundry do this or do I need something special?Thanks.: You have 2 options. Sand casting or investment casting. Stainless steel can be cast with either of these methods. In either case a model or pattern will have to be created. For sand casting the pattern is all that is needed to go to casting. For investment casting the pattern is used to make a wax casting, which is then coated with the investment. The wax is burned out and the metal is then poured into the cavity. If you are making just 1 or 2 pieces you can have waxes machined. This saves the intermediate step Depending on the size machining may still be your best option. Especially if you want just 1 part.

Q: How are steel coils processed and treated?: To ensure the quality and suitability of steel coils for different applications, they undergo a series of steps and treatments. Initially, the coil is uncoiled by removing its protective wrapping and unwinding it. Any defects like cracks or uneven surfaces are then inspected. Next, the coil is cleaned to eliminate dirt, oil, and rust using chemical agents and mechanical scrubbing. After cleaning, it is rinsed and dried to prevent corrosion caused by residual moisture. Once cleaned, the steel coil may be treated based on its intended use. One common treatment is pickling, where the coil is immersed in an acidic solution to remove impurities and scale. This improves the surface finish and prepares the steel for further processing. After pickling, the coil can undergo cold rolling, which reduces its thickness and improves dimensional accuracy. This is done by passing the steel through a series of rollers at room temperature, gradually decreasing thickness and increasing strength. It also improves the surface finish. In some cases, the coil may undergo additional heat treatments like annealing or tempering. Annealing involves heating the coil to a specific temperature and slowly cooling it to relieve internal stresses and improve mechanical properties. Tempering, on the other hand, involves reheating the coil to a lower temperature and rapidly cooling it to enhance strength and toughness. Once the desired processing and treatments are completed, the steel coil may be coated or painted for added protection against corrosion or to enhance its appearance. Coating processes can include hot-dip galvanizing, electroplating, or applying organic coatings like paint or powder coatings. Finally, the processed and treated steel coils are cut into specific sizes or shapes according to customer requirements. This can be done using cutting methods such as shearing, slitting, or sawing. Overall, the processing and treatment of steel coils involve cleaning, pickling, rolling, heat treatment, coating, and cutting processes. These steps are carefully carried out to ensure the quality, strength, and suitability of the steel for its intended applications.

Q: How do steel coils withstand extreme temperatures?: Steel coils are able to withstand extreme temperatures due to their unique composition and manufacturing process. Steel, the primary material used in coils, is an alloy of iron and carbon that possesses excellent thermal properties. Its high melting point, which can reach up to 2,500 degrees Fahrenheit (1,370 degrees Celsius), allows it to remain structurally stable under intense heat. Furthermore, steel coils are often subjected to a process called annealing, which involves heating the steel to a specific temperature and then slowly cooling it down. This annealing process helps relieve internal stresses within the steel, making it more resistant to thermal expansion and contraction. By reducing the presence of internal defects, annealing also enhances the steel's overall strength and durability, allowing it to better withstand extreme temperatures. Moreover, steel coils are often coated with protective layers to provide additional resistance against temperature variations. These coatings, such as galvanized or zinc coatings, act as a barrier between the steel and the external environment. They help prevent oxidation, corrosion, and other forms of degradation that can occur when exposed to extreme heat or cold. In summary, steel coils are able to withstand extreme temperatures due to the inherent properties of steel, the annealing process that relieves internal stresses, and the protective coatings that provide an extra layer of resistance. These factors work together to ensure that steel coils remain structurally stable and maintain their performance even in the harshest temperature conditions.

Q: What are the challenges in coil slitting?: Coil slitting, a method used to divide large metal coils into narrower strips of desired widths, has its advantages in terms of efficiency and flexibility. However, it also comes with several challenges. One of the primary obstacles in coil slitting is the need to ensure consistent strip width accuracy. To achieve this, it is crucial to maintain uniform width measurements throughout the process. Any deviation in strip width can have downstream effects on the production line, impacting the quality and functionality of the final product. Overcoming this challenge requires the use of precise slitting equipment and careful monitoring of process parameters. Another challenge lies in managing the quality of the strip edges. The edges of the slit strips play a critical role, particularly in applications where they must be free from imperfections like burrs. Attaining clean and smooth edges necessitates proper blade selection, positioning, and maintenance. Any defects or irregularities on the strip edges can affect subsequent processes such as bending, welding, or coating. Additionally, the type of material being slit can pose challenges. Certain metals, such as high-strength steels or alloys, may be more difficult to cut due to their hardness or brittleness. Slitting these materials can result in blade wear and premature failure, leading to increased downtime and maintenance costs. Moreover, the presence of contaminants or surface defects on the coil can also impact the slitting process, requiring additional cleaning or preparation steps. Handling and processing large coils present another significant challenge. Coils can be cumbersome and heavy, necessitating proper equipment and procedures to ensure safe handling. Furthermore, the slitting process generates a significant amount of scrap material, which needs to be efficiently managed and disposed of. Proper storage, transportation, and recycling of the scrap are essential to minimize waste and maintain a clean and organized working environment. In conclusion, coil slitting offers benefits in terms of customization and productivity. However, it also poses challenges in maintaining strip width accuracy, managing edge quality, dealing with difficult materials, and handling large coils and scrap. Overcoming these challenges requires expertise, precision equipment, and careful process control to ensure the desired quality and efficiency in coil slitting operations.

Q: What are the different methods of corrosion protection for steel coils?: There are several methods of corrosion protection for steel coils, including but not limited to: 1. Coating: Applying a protective layer such as paint, polymer, or zinc coating on the surface of the steel coil to prevent direct contact with corrosive agents. 2. Galvanizing: Immersing the steel coil in a bath of molten zinc, creating a protective coating that prevents corrosion. 3. VCI (Vapor Corrosion Inhibitor): Using volatile corrosion inhibitors that release molecules to form a protective layer on the steel coil, preventing corrosion. 4. Oil or Wax Coating: Applying a layer of oil or wax on the surface of the steel coil to act as a barrier against moisture and corrosive elements. 5. Cathodic Protection: Using sacrificial anodes or impressed current to protect the steel coil by providing a more easily corroded metal that attracts corrosion instead. 6. Desiccants: Placing desiccant materials such as silica gel or molecular sieves inside the packaging to absorb moisture and prevent corrosion. 7. Environmental Control: Maintaining controlled humidity levels, temperature, and proper ventilation in storage areas to minimize the risk of corrosion. 8. Proper Handling and Storage: Implementing safe handling practices during transportation and storing steel coils in dry, covered areas away from corrosive substances. It is important to select the appropriate method based on the specific application, environment, and desired level of protection for the steel coils.

Q: What are the common coil diameters available for steel coils?: Steel coils come in a range of common diameters depending on the industry and purpose. Generally, the most frequently used coil diameters for steel range from 24 inches to 72 inches. These diameters are commonly utilized in sectors like automotive, construction, and manufacturing. It should be noted that the required coil diameter might vary depending on factors such as the material's size and weight, the equipment used for coil handling, and the specific requirements of the end-use application.

Q: How are steel coils used in the construction of buildings?: Steel coils are used in the construction of buildings primarily for their strength and durability. These coils are typically formed into beams, columns, and other structural components, providing a sturdy framework. Additionally, steel coils can be shaped into sheets or plates used for roofing, walls, and flooring, offering excellent resistance to weather and fire. Overall, steel coils play a crucial role in ensuring the stability and longevity of buildings.

Q: What are the current trends in the steel coil industry?: Some current trends in the steel coil industry include the increasing demand for high-strength steel coils due to their durability and lightweight properties. There is also a growing focus on sustainability and environmentally friendly practices, leading to the development of eco-friendly coatings and recycling initiatives. Additionally, digitalization and automation are becoming more prevalent, enhancing efficiency and productivity in steel coil manufacturing processes.

Q: What is the role of steel coils in the manufacturing of storage racks?: Steel coils play a critical role in the manufacturing of storage racks as they provide the raw material for creating the structural components of the racks. These coils are typically transformed through processes like cutting, bending, and welding to form the various parts of the racks, such as the upright frames, beams, and shelves. The strength and durability of steel make it an ideal material for storage racks, ensuring they can withstand heavy loads and provide long-lasting support for storing items efficiently.

Q: How are steel coils used in the production of shipping containers?: Steel coils are used in the production of shipping containers as they provide the necessary strength and durability required to withstand the demands of transportation and storage. These coils are shaped and welded into the appropriate dimensions to form the walls, roof, and floor of the container. The high tensile strength of steel ensures that the container can withstand heavy loads, impacts, and harsh weather conditions, making it an ideal choice for shipping and protecting goods.

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