Pre-Painted Galvanized/Aluzinc Steel Roof with Best Quality of China

Pre-Painted Galvanized/Aluzinc Steel Roof with Best Quality of China System 1

Pre-Painted Galvanized/Aluzinc Steel Roof with Best Quality of China

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Loading Port:: Shanghai

Payment Terms:: TT OR LC

Min Order Qty:: 50 m.t.

Supply Capability:: 10000 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

Pre-Painted Galvanized/Aluzinc Steel Roof with Best Quality 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 need to identify a metal. It is rusty so I suspect it is either iron or steel. Since they both have similar densities and are magnetic, how do I tell the difference betweeen steel and iron?: Iron is a natural ore. Google: Iron ore, click on Mineral Information Institute - Iron Ore. Steel is a man-made material, consisting of iron. Google: Sir Henry Bessemer, inventor.

Q: i am working in a firm that deals with steels.. so it is necessary for me to understand the chemistry of the steels from their names so that i need not memorize all the grades with their metallury.. where can i find information about this nomenclature ? please help: For steels with a four number code like 1020, 4140 ect the first two digits are the alloying information. I think you need to memorise those. 10 steels are plain carbon steel with no alloying. 41 steels are chrome-molly. The third and forth digits are the carbon content. 1020 is 0.2% Carbon, 4140 is 0.4% carbon. I don't know if there is a system to stainless steels.

Q: What are the different methods of testing steel coils for quality control?: Steel coils undergo various methods for quality control testing to ensure they meet the necessary specifications and standards. These methods encompass visual inspection, dimensional measurement, hardness testing, tensile strength testing, chemical analysis, coating thickness measurement, surface roughness measurement, ultrasonic testing, and magnetic particle inspection. Visual inspection is the most fundamental technique, involving a thorough examination of the coils for surface defects like scratches, dents, or irregularities. This method enables the identification of visible defects in the material. Dimensional measurement, on the other hand, utilizes tools such as calipers, micrometers, or laser measuring devices to evaluate the dimensions of the steel coils. The measurements are compared against specified tolerances to ensure they meet the required standards. To assess the resistance of the steel coils to indentation or penetration, hardness testing is performed. This examination helps evaluate the material's strength and durability. Common hardness testing methods include Rockwell, Brinell, and Vickers hardness tests. Tensile strength testing measures the maximum tensile stress a steel coil can endure before breaking or deforming. This test helps determine the material's strength, elasticity, and compliance with the required specifications. Chemical analysis is crucial in testing the composition of the steel coils to verify the presence of specific elements in the desired amounts. This ensures that the coils are made from the correct grade of steel and comply with the required chemical composition standards. In cases where the steel coils have a protective coating, it is vital to measure the thickness of the coating. Non-destructive testing methods like magnetic induction or eddy current testing are typically employed for this purpose. The coating thickness is compared against the specified requirements to ensure it provides adequate protection. Surface roughness testing evaluates the smoothness or roughness of the steel coil's surface using instruments like profilometers or roughness testers. This testing method guarantees that the coils meet the required surface finish standards. Ultrasonic testing utilizes high-frequency sound waves to detect internal defects like cracks, voids, or inclusions within the steel coils. This non-destructive testing method provides valuable information about the structural integrity of the coil. Magnetic particle inspection is employed to identify surface and near-surface defects in steel coils. By applying magnetic particles to the surface and detecting any magnetic leakage caused by defects using magnetic sensors, this technique effectively detects cracks and other surface abnormalities. By combining these testing methods, manufacturers ensure that the steel coils produced meet the necessary quality standards and are suitable for their intended applications.

Q: Is steel case ammo going to mess the gun up or is it just going to wear the parts out faster and if so how much faster? (I am not planning on reloading the rounds): True, brass ammo is hard to find. Your only real options in brass is Remington, Winchester, American Eagle, UMC, PMC, Fiocchi, and a sometimes a few various imports. Most of these can be difficult to find in large quantites and are costly. There was surplus from South Africa, Yugoslavia, Egypt and possibly Iran that was brass but almost all of it is difficult to find. The AK was designed around steel cased ammo. I shoot plenty of it through my guns and have little worry about any parts damage or accelerated wear. Other than the option of reloading, brass doesn't offer much that steel can't provide.

Q: What are the different coil slitting methods used for steel coils?: Steel coils can be slit into smaller, narrower coils using various methods. These methods serve the purpose of cutting the coils to suit specific applications. 1. The most commonly used method for coil slitting is blade slitting. Circular knives or blades are employed to cut the steel coil into narrower strips. These blades are placed at predetermined intervals and usually attached to a rotating shaft. As the coil passes through the blades, their circular motion slices through the coil, resulting in the desired narrower strips. 2. Another method, known as rotary shear slitting, involves the use of two sets of rotary shear knives to cut the steel coil. These upper and lower sets of knives rotate in opposite directions, creating a scissor-like cutting action. As the coil is fed through the shearing blades, the sharp edges of the knives slice through the coil, producing the desired narrower strips. 3. Sliding shear slitting is yet another method utilized for coil slitting. This method involves a stationary upper knife and a moving lower knife to cut the coil. The lower knife moves back and forth across the coil while the upper knife remains fixed. As the coil passes through the moving knife, it is cut into narrower strips. 4. Crush slitting is a less common method employed for coil slitting. In this method, the steel coil is fed through a set of rollers equipped with blades. Although the blades are not sharp, the pressure exerted by the rollers crushes and fractures the coil, resulting in the creation of the desired narrower strips. 5. Laser slitting is a modern and precise method used for coil slitting. It utilizes a laser beam to cut through the steel coil. The laser beam is directed onto the coil, and its high intensity melts and vaporizes the steel, creating a narrow slit. Laser slitting offers high accuracy and a clean cut, making it suitable for specialized applications. Each of these coil slitting methods possesses its own advantages and limitations. The choice of method depends on factors such as the type of steel, desired strip width, production volume, and required precision. Manufacturers select the most suitable method based on their specific requirements and the properties of the steel coils they are processing.

Q: What are the different coil slitting line configurations used for steel coils?: There are several different coil slitting line configurations that are used for steel coils, each with their own specific advantages and applications. These configurations include: 1. Simplex Slitting Line: This configuration consists of a single slitter head that cuts the coil into multiple smaller widths. It is suitable for lower production volumes and is often used for processing thinner gauge materials. 2. Loop Slitting Line: In this configuration, the steel coil is fed through a loop pit, which allows for continuous processing without stopping the line. It is commonly used for high-volume production and is ideal for thicker gauge materials. 3. Double Loop Slitting Line: Similar to the loop slitting line, this configuration includes two loop pits, which increases the line's efficiency and productivity. It is typically used for processing thicker gauge and wider width materials. 4. Tension Stand Slitting Line: This configuration includes a tension stand that applies constant tension to the material during the slitting process. It helps to maintain consistent slit widths and is often used for high-precision slitting applications. 5. Rotary Shear Slitting Line: In this configuration, a rotary shear cuts the steel coil into smaller widths. It is suitable for both thin and thick gauges and offers high-speed and accurate cutting. 6. Scrap Winder Slitting Line: This configuration includes a scrap winder that collects the excess material trimmed during the slitting process. It helps to improve efficiency and reduce waste. 7. Combination Slitting Line: This configuration combines multiple slitting processes into one line, allowing for different slitting methods and widths to be achieved within a single setup. It offers flexibility and versatility in processing various steel coil sizes and materials. These different coil slitting line configurations provide various options for manufacturers to choose from based on their specific production requirements and the properties of the steel coils being processed.

Q: What is the size range of steel coils?: The size of steel coils can vary depending on the specific application and industry, offering a wide range of options. Steel coils are available in various sizes to meet different needs. The width of steel coils can range from a few inches to several feet, accommodating different requirements. Similarly, the thickness of steel coils can vary from very thin gauges, like 0.005 inches, to thicker gauges that exceed 0.5 inches. The length of steel coils is typically determined by the manufacturing process, but it can be customized to meet specific demands. In general, the size range of steel coils is extensive, providing flexibility and adaptability in industries like automotive, construction, and manufacturing.

Q: How are steel coils different from steel sheets?: Steel coils and steel sheets are both made from the same material, which is steel. However, they differ in terms of their shape and size. Steel coils are long, continuous rolls of steel, usually wound up in a coil form, while steel sheets are flat, rectangular pieces of steel. The main difference lies in their applications - steel coils are commonly used in industries where large quantities of steel are required for manufacturing processes, such as automotive or construction, whereas steel sheets are often used for smaller-scale projects or as a raw material for further processing.

Q: Edward Humphrey wants to know... Can I use steel roofing on an older house?: steel roofing is a very logical option when considering replacing a residential roof. Keep in mind that in addition to the cost of the actual metal roofing panel, most likely, in order to qualify for the warranties associated with these products, you must also use their accessories and adhere strictly to their installation instructions. If you have a very cut up house, lots of dormers and valleys, etc, the costs to waterproof these areas before installing can get to be costly, but as far as a straight forward reroof over existing substrate, costs are very competitive. As much as I see a lot recommend going over existing shingles, I prefer to strip the existing shingles, and check the sheathing, before waterproofing and roof installation.

Q: How do steel coil manufacturers handle international shipping requirements?: Steel coil manufacturers ensure that their products meet transportation standards and regulations for international shipping. This involves following specific packaging requirements, using appropriate containers, and securing the coils to prevent damage during transit. In order to meet international shipping requirements, manufacturers must also comply with customs regulations and documentation. They need to prepare accurate and complete paperwork, such as commercial invoices, packing lists, and bills of lading, to ensure smooth customs clearance procedures. Furthermore, steel coil manufacturers often collaborate with freight forwarders or shipping agents who specialize in international logistics. These professionals have extensive knowledge of shipping regulations, routes, and carriers, and can assist with arranging transportation, negotiating freight rates, and handling necessary paperwork. Manufacturers may also choose to use intermodal transportation, which involves utilizing multiple modes of transportation like trucks, trains, and ships. This allows for more efficient and cost-effective shipping, especially for long-distance or international shipments. Additionally, steel coil manufacturers may consider obtaining insurance coverage to protect their products during transit. Insurance provides financial compensation in case of any damage, loss, or delays during the shipping process. Overall, steel coil manufacturers handle international shipping requirements through careful planning, adherence to regulations, collaboration with logistics experts, and consideration of various transportation options. This ensures that their products reach international destinations safely, on time, and in compliance with all relevant regulations.

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