High quality of prepainted corrugated steel coil from north of China

High quality of prepainted corrugated steel coil from north of China System 1

High quality of prepainted corrugated steel coil from north of China

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 50 m.t.

Supply Capability:: 100000 m.t./month

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2.Main Features of the Pre-Painted Galvanized/Aluzinc Steel Roof：

• Excellent process capability

• Smooth and flat surface

• Workability, durability

• Excellent heat resistance performance

• High strength

• Good formability

• Good visual effect

3.Pre-Painted Galvanized/Aluzinc Steel Roof Images

High quality of prepainted corrugated steel coil from north of China

4.Pre-Painted Galvanized/Aluzinc Steel Roof Specification

Standard: AISI, ASTM, BS, DIN, GB, JIS

Grade: SGCC SGCH SGCD DX51D

Thickness: 0.13-3.0mm

Model Number: AISI, ASTM, BS, DIN, GB, JIS

Type: Steel Plate

Technique: Cold Rolled

Surface Treatment: Galvanized

Application: Container Plate

Special Use: High-strength Steel Plate

Width: 30-1500mm

Length: any length

color: RAL color

5.FAQ of Pre-Painted Galvanized/Aluzinc Steel Roof

What’s the brand of the paint?

We use the best brand of all of the word—AKZO.

What’s the wet and heat resistance of the roof?

More than 1000 hours.

Q: I have good quality knives that I sharpen with various things, but mostly with a fine, diamond encrusted dry stone (eze lap) . When I run them over the steel, it doesn't seem to make any difference. I've heard that it aligns the edge, whatever that means. Using a steel, is it all just for show ?: It does work but unless your technique is right you can knacker your knives. I think it is around a 45degree angle. You also need a good quality, rough, steel, if it's smooth and cheap it won't work. Having said that I knew an old farmer who earned pocket money out of sharpening people's knives and scissors with a stone and he got immaculate results.

Q: What are the different types of steel coil grades and specifications?: There are several different types of steel coil grades and specifications, including hot rolled, cold rolled, galvanized, and stainless steel coils. Each type has its own unique properties and uses. Hot rolled coils are produced at high temperatures and are commonly used in construction and manufacturing applications. Cold rolled coils are produced at lower temperatures and have a smoother finish, making them suitable for applications that require a higher level of precision. Galvanized coils are coated with a layer of zinc to protect against corrosion, while stainless steel coils contain a high percentage of chromium for added durability and resistance to corrosion. Overall, the choice of steel coil grade and specification depends on the specific requirements of the project or application.

Q: What is the average price of a steel coil?: The average price of a steel coil can vary depending on several factors such as the type of steel, the thickness and width of the coil, the market demand, and the location of purchase. Generally, the price can range from $500 to $1500 per metric ton. However, it is important to note that prices are subject to fluctuations in the steel market, which can be influenced by global economic conditions, trade policies, and supply-demand dynamics. Therefore, it is advisable to consult with steel suppliers or monitor market trends to get the most accurate and up-to-date pricing information.

Q: How are steel coils inspected for oil or rust residues using chemical analysis?: Steel coils can be inspected for oil or rust residues using chemical analysis techniques. One of the commonly used methods is Fourier transform infrared spectroscopy (FTIR). In this technique, a small sample of the steel coil is taken and subjected to infrared radiation. The infrared spectrum obtained is then analyzed to identify the presence of specific chemical bonds that are characteristic of oil or rust residues. For detecting oil residues, a common approach is to use the peak at around 2920 cm-1 in the FTIR spectrum, which corresponds to the C-H stretching vibration in hydrocarbon chains. If this peak is observed, it indicates the presence of oil residues on the steel coil. To identify rust residues, the FTIR spectrum is analyzed for the presence of characteristic peaks corresponding to iron oxide or hydroxide compounds. For example, the presence of a peak at around 560 cm-1 suggests the presence of iron oxide (FeO) or iron hydroxide (Fe(OH)3). In addition to FTIR analysis, other chemical analysis techniques can also be utilized, such as X-ray fluorescence spectroscopy (XRF) or energy-dispersive X-ray spectroscopy (EDX). These techniques can provide elemental composition information, allowing for the identification of specific elements associated with oil or rust residues, such as carbon or iron. Overall, the chemical analysis of steel coils for oil or rust residues provides a reliable and accurate method to ensure the quality and cleanliness of the coils before further processing or usage.

Q: Iron melts faster when there will be low carbon in Iron.During steel making the molten Iron gets purified and alloying being done through the process. How the carbon is being controlled at Iron melting stage and what it is called?: Steel is usually made in a two-step process. As you may know, carbon, in the form of coke, is added to the iron ore during the initial smelting process. This is the first step. The conversion of iron ore into raw iron is accomplished with a blast furnace. Carbon dissolves with the iron during the smelting process. The amount of carbon in the iron is generally not controlled at this point as this would be too difficult, the excess carbon is removed in the next step. The result is pig iron which is crude iron that has a very high carbon content, and a large amount of impurities. Pig iron is almost as brittle as glass, and it is useless in this form. In most modern steelmaking operations, molten pig iron is tapped from the blast furnace three or four times per day- it is not allowed to cool. The liquid pig iron is carried in ladles directly to a Basic Oxygen Furnace which converts the pig iron into steel. The basic oxygen converter uses a stream of pure oxygen to burn off the excess carbon. Impurities are also burned off, particularly phosphorus, silicon, and sulfur (which damage the steel's properties.) These elements all have a much higher affinity for oxygen than iron does, so the iron itself remains unchanged. Once the carbon content and the impurities are reduced to the desired level. The oxygen is shut off, and the iron has now become steel. At this point other alloying elements may be added, such as chromium, manganese, or molybdenum. These elements improve the steel's properties, but also add to it's price. If necessary, more carbon can be added as well if the carbon content has accidentally dropped too low. Finally, molten steel from the basic oxygen furnace is poured off. It can be cast into ingots, billets, or thin slabs.

Q: hey i was looking to buy a khukuri machete by cas iberia. its made of carbon steel but doesnt say which one. anyone that is into knives and all that know how this would hold up and the rust resistance of it? mostly be used for cutting bush and small trees: There's no way to tell from the information you posted. Given it's for a machete I would guess it would be a fairly high carbon steel. Rust resistance will be relatively poor. It will last for years though as long as you clean and dry it after use.

Q: What are the different methods of edge camber correction for steel coils?: Edge camber correction in steel coils can be achieved through several methods, depending on specific requirements and available equipment. Some commonly used methods include the following: 1. Mechanical tools, such as shears or slitters, are utilized for trimming the edges of the coil. This removes excess material and corrects the camber. Mechanical edge trimming is suitable for smaller coils or minimal camber. 2. Tension leveling involves passing the coil through adjustable rollers while applying tension. This elongates the steel and reduces camber. It is effective for moderate camber and commonly used for larger coils. 3. Roller leveling, similar to tension leveling, employs fixed rollers to exert pressure on the steel and flatten it. This method is preferable for thicker and heavier coils. 4. Heat straightening utilizes controlled heat to soften the edges of the coil. Once the steel becomes malleable, external force is applied to straighten the edges. Heat straightening is suitable for severe edge camber but requires specialized equipment and expertise. 5. Combination methods may be employed by combining different techniques. For instance, mechanical edge trimming may be followed by tension leveling or roller leveling to further straighten the edges. It is important to note that the choice of method depends on factors such as camber severity, coil dimensions, material properties, and available equipment. Evaluating these factors and consulting with experts is essential to determine the most suitable method for edge camber correction in steel coils.

Q: How do steel coils contribute to the automotive aftermarket?: The automotive aftermarket heavily relies on steel coils to manufacture a wide range of automotive parts and components. This secondary market deals with the sale of vehicle parts, accessories, and services after the initial purchase of the vehicle. Steel coils find their application in the production of several automotive aftermarket products, including springs, suspension components, chassis parts, and body panels. These coils are typically made from top-notch steel alloys that possess the desired characteristics of strength, durability, and performance. Springs are one of the primary uses of steel coils in the automotive aftermarket. These coiled springs play a crucial role in various automotive systems like suspension, brakes, and clutches. They provide the necessary support, stability, and shock absorption to ensure smooth and safe vehicle operation. Not only that, but steel coils also contribute to the manufacturing of chassis parts, which are vital for maintaining the vehicle's structural integrity and safety. Chassis parts made from steel coils include frame components, cross members, and reinforcement panels, which greatly enhance the overall stability and durability of the vehicle. Moreover, steel coils are extensively utilized in the production of body panels, such as doors, hoods, fenders, and roofs, which are commonly replaced or customized in the automotive aftermarket. These body panels, manufactured from steel coils, not only enhance the vehicle's aesthetics but also provide protection and resistance against impacts. In conclusion, steel coils play a critical role in the automotive aftermarket by facilitating the production of various parts and components necessary for vehicle repair, customization, and improvement. Their high strength, durability, and versatility make them an indispensable raw material, perfectly meeting the demanding requirements of the automotive industry.

Q: How are steel coils used in the manufacturing of electrical enclosures?: Steel coils are used in the manufacturing of electrical enclosures as they provide the raw material for forming the enclosures' outer shells and structural components. The steel coils are processed and shaped through various techniques such as cutting, bending, and welding, to create the desired size and shape of the enclosure. The steel's strength and durability make it an ideal material choice for ensuring the enclosures can protect electrical equipment from environmental factors and provide safety for users.

Q: I'm ordering a Pair of tongs(a tool used to dig quahogs in bays that scrapes the bottom constantly) and what type of metal would be the best to fabricate it, steel or stainless steel?: Whilst doing a welding course a few years ago the teacher said stainless steel was not its proper name,it is called Heat and Corossion resistant steel,it come in different grades related to its corossion resistance,priced accordingly.Must be welded properly without introduction of carbon to the weld (carbon pickup) or the weld might not be there next time you look dependant on environment.Generally harder to form than mild steel (low carbon steel) so it will tend to be stronger than lcs for the same cross section.steve

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