COLD ROLLED STEEL COIL WITH HIGH QUALITY AND COMPETITVE PRICE NO.1

COLD ROLLED STEEL COIL WITH HIGH QUALITY AND COMPETITVE PRICE NO.1 System 1

COLD ROLLED STEEL COIL WITH HIGH QUALITY AND COMPETITVE PRICE NO.1

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 100 m.t.

Supply Capability:: 8000 m.t./month

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Cold rolled steel is the based material for galvanized steel coil and pre-painted galvanized steel coil. It is widely used in light industry for marking tank, furniture, refrigerators, washers, freezer plate, air conditioner, micro-wave oven, water heater, soot such machine etc.

Main specification:

COLD ROLLED STEEL
Thicknenss	0.10mm-4.00mm
Width	600mm-2000mm
Sheets length	1200-6000mm
Coil inner diameter	508-610mm
Surface treatement	matt finish/bright finish,oiling/dry, bright anneal/black anneal
Coil weight	3-5t

We can supply customers' with different specifications of the highest quality and lowest price.

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Q:What are the different types of coatings applied to steel coils?: There are various types of coatings that can be applied to steel coils, each with its own specific purpose and benefits. 1. Galvanized Coating: This is one of the most common types of coatings applied to steel coils. It involves the application of a layer of zinc to the steel surface. Galvanized coatings provide excellent corrosion resistance, making them suitable for outdoor applications where the steel may be exposed to moisture or harsh environmental conditions. 2. Galvalume Coating: Similar to galvanized coating, galvalume coating also involves the application of a layer of zinc to the steel surface. However, it also includes a small amount of aluminum, which enhances the corrosion resistance and provides better heat reflectivity. Galvalume coatings are often used in roofing and cladding applications. 3. Pre-painted Coating: Pre-painted coatings involve the application of a layer of paint or primer to the steel surface. This type of coating allows for customization in terms of color and finish. Pre-painted coatings not only enhance the aesthetics of the steel but also provide additional protection against corrosion and weathering. 4. Organic Coating: Organic coatings are typically applied as a topcoat over a galvanized or galvalume coating. They are made of various resins, such as polyester, epoxy, or polyurethane, which provide additional protection against corrosion, abrasion, and chemicals. Organic coatings are commonly used in applications where both aesthetics and durability are important, such as in the automotive industry. 5. Metallic Coating: Metallic coatings, such as aluminum or zinc, are applied to steel coils using a process called hot-dip coating. These coatings provide excellent corrosion resistance and are commonly used in applications where the steel is exposed to high temperatures or corrosive environments. 6. Chromate Conversion Coating: Chromate conversion coatings are applied to steel coils primarily for their corrosion resistance properties. They are commonly used in electrical applications to protect against galvanic corrosion and improve conductivity. Overall, the type of coating applied to steel coils depends on the specific requirements of the application, including the desired level of corrosion resistance, aesthetics, and environmental factors.

Q:The length of a steel beam increases by 0.78 mm when its temperature is raised from 22 degrees C to 35 degrees C. What is the length of the beam at 22 degrees C (in meters)?I used: L = (0.78 mm)/[(9/5)(.00000645 F)(13)] = 5.17 meters but Mastering Physics said Not quite. Check through your calculations; you may have made a rounding error or used the wrong number of significant figures. I'm confused because this is how we learned this kind of problem in class, so if anybody knows what I did wrong, feel free to correct my errors! Thanks: we may use the formula ΔL=α(Lo)(Tf-To) where Lf is the length of steel at temp. Tf Lo is length at To α is the coefficient of linear expansion of steel which is 11x10^-6/°C ΔL=0.78mm (the change in length) Lo=? ΔL=α(Lo)(Tf-To) Lo=ΔL/[α(Tf-To)] Lo=(0.78x10^-3m)/[(11x10^-6/°C)(35°C-2...? Lo=5.455m answer

Q:My musical saw has, despite my best efforts, got little patches of rust on it. How Do I go about removing the rust without spending too much on rust-removal products and without affecting the properties of the steel?: Steel wool and a bit of WD 40. Steel wool will remove the rust and the WD 40 will protect it in the future.

Q:How are steel coils used in the production of elevator components?: Steel coils play a crucial role in elevator component manufacturing. Crafted from high-quality steel specifically designed to meet the demanding requirements of elevator production, these coils are indispensable. Elevator doors heavily rely on steel coils. These coils undergo processing into flat sheets, which are then cut into desired dimensions for door creation. The doors must possess strength and durability to endure frequent use and ensure passenger safety. Steel coils provide the necessary structural integrity and resistance to deformation, essential characteristics for elevator doors. Furthermore, steel coils find application in the manufacturing of elevator cabins. After processing, the coils are molded into various shapes to construct cabin walls and flooring. Steel's strength and rigidity make it an ideal material for this purpose, enabling it to handle heavy loads and establish a secure and stable environment for passengers. Additionally, steel coils find utility in the production of elevator shafts. Rolled into cylindrical forms and welded together, these coils serve as the structural framework for the shafts. The shafts demand strength and rigidity to support the elevator's weight and ensure smooth and safe vertical movement. Steel coils fulfill these requirements by providing the necessary strength, stability, and load-bearing capacity for this critical elevator system component. To summarize, steel coils play a vital role in the production of elevator components, including doors, cabins, and shafts. Their strength, durability, and versatility make them suitable for creating reliable and secure elevator systems that efficiently transport passengers.

Q:What are the different certifications required for steel coil manufacturers?: Steel coil manufacturers may be required to obtain various certifications in order to operate in the industry, ensuring that they meet specific quality and safety standards. One widely recognized certification is the ISO 9001, an international standard for quality management systems. This certification demonstrates the manufacturer's commitment to consistently meeting customer and regulatory requirements through the implementation of effective processes and procedures. Another crucial certification is the ISO 14001, which focuses on environmental management systems. By obtaining this certification, manufacturers prove their dedication to implementing sustainable practices and minimizing their environmental impact. In terms of safety, manufacturers may need certifications like the OHSAS 18001 or ISO 45001, which are standards for occupational health and safety management systems. These certifications guarantee that the manufacturer has established proper processes and controls to ensure the well-being of their employees and stakeholders. Additionally, manufacturers may require industry-specific certifications such as the American Institute of Steel Construction (AISC) certification, which is specific to structural steel fabrication and erection. This certification ensures that the manufacturer adheres to the best practices in the industry. Furthermore, manufacturers may need certifications related to specific product standards, such as the American Society for Testing and Materials (ASTM) certification. This certification guarantees that the manufacturer's products meet specific quality and performance requirements. Acquiring these certifications is crucial for steel coil manufacturers as they provide customers with confidence in the quality, environmental responsibility, and adherence to industry standards of their products.

Q:Can steel coils be coated with anti-slip materials?: Yes, steel coils can be coated with anti-slip materials.

Q:What are the disadvantages of using steel coils?: One of the main disadvantages of using steel coils is their weight, which can make transportation and handling more challenging and costly. Additionally, steel coils are prone to corrosion if not properly coated or protected, which can negatively impact their lifespan and performance. Another downside is their limited flexibility and difficulty in shaping, which may restrict their application in certain industries. Lastly, steel coils can be expensive to produce and acquire, making them less cost-effective compared to alternative materials in some cases.

Q:What are the different types of steel coil surface defects?: During the manufacturing or handling process, various steel coil surface defects may arise. Some commonly encountered types are as follows: 1. Rust: When moisture or oxygen comes in contact with the steel coil, rust, a reddish-brown discoloration, may develop on its surface. 2. Scratches: While the steel coil is being handled or transported, superficial marks known as scratches can be incurred. These marks can vary in depth and severity, ranging from light surface scratches to deep gouges. 3. Stains: Exposure to chemicals or other substances can lead to stains, discolored patches that appear on the coil's surface. Removing them may prove to be challenging. 4. Roll marks: During the rolling process, impressions or indentations called roll marks may form. Uneven pressure or misalignment of the rolls causes them, resulting in lines or patterns on the coil's surface. 5. Edge wave: Imperfectly flat edges of the coil can result in a defect known as edge wave. This defect causes the edges to appear wavy or uneven and can impact the coil's overall appearance and performance. 6. Oil spots: If the oil or lubricants utilized in the manufacturing process are not adequately removed, surface defects called oil spots can manifest. These spots appear as dark patches or spots on the coil's surface and may hinder the adhesion of coatings or paints. 7. Pitting: Small, shallow depressions or pits on the coil's surface are indicative of a defect called pitting. Factors like corrosion, uneven cooling, or impurities in the steel can cause this defect. 8. Holes: Holes are severe surface defects that can arise due to various factors, including corrosion, mechanical damage, or manufacturing errors. These defects come in different sizes and can significantly compromise the coil's structural integrity. Promptly addressing these surface defects is crucial for maintaining the quality and performance of the steel coil. Regular inspections, proper handling, and appropriate surface treatments can help minimize the occurrence of these defects.

Q:steel can be used to do?: Stainless steel can be used to (1) industrial use stainless steel (2) building decoration use stainless steel;(3) medical equipment (4) life with stainless steel tableware and the Jawaysteel is a great Chinese company, offer various kinds of stainless steel Maybe you can to their advice

Q:What exactly is surgical stainless steel made of (metals)? Does it contain nickel? If so, what % does it usually contain? I am deciding between surgical stainless steel piercings or titanium. Both same price and looks. I want to know which one is more hypo-allergenic and generally nickel free.: surgical stainless steel is an austenitic steel containing 18-20% chromium and 8-10% nickel. and some proportion of molybdenum. The word 'surgical' refers to the fact that these types of steel are well-suited for making surgical instruments: they are easy to clean and sterilize, strong, and corrosion-resistant. The nickel/chrome/molybdenum alloys are also used for orthopaedic implants as aids in bone repair, and as a structural part of artificial heart valves and other implants. However, immune system reaction to nickel is a potential complication. In some cases today titanium is used instead in procedures that require a metal implant which will be permanent. Titanium is a reactive metal, the surface of which quickly oxidizes on exposure to air, creating a microstructured stable oxide surface. This provides a surface into which bone can grow and adhere in orthopaedic implants but which is incorrodible after implant. Thus steel may be used for temporary implants and the more expensive titanium for permanent ones

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