Prepainted Galvanized Steel

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Product Description:

Prepainted Galvanized Steel

With galvanized steel as base metal, after pretreatment (degrease and chemical treatment) and liquid dope with several layers of color, then after firing and cooling, finally the plate steel is called pre-painted galvanized steel. Pre-painted galvanized steel is good capable of decoration, molding, corrosion resistance. It generally displays superior workability, durability and weather resistance.

Brand Name: HBSTEEL

Specifications OfPrepainted Galvanized Steel

Thickness 0.20-1.2mm (BMT)

Width 600-1250mm

Zinc Coating 100-275g/m2

Color According to RAL color fan or as per request

Internal Diameter 508mm or 610mm

Coil Weight 3-6MT

Quality Commercial and structural quality

Paint Polyester paint for topside, epoxy for reverse

Standard JIS G 3312, ASTM A755M, EN 10169

Base Steel Grade SGCC,SGCD,DX51D+Z,DX52D+Z;S200GD,S220GD,S280GD,S350GD,CS,FS,SS

Chemical Composition Of Prepainted Galvanized Steel

C	Si	Mn	P
0.04-0.06%	0.01-0.03%	0.18-0.22%	0.014-0.016%

Technical Data Of Prepainted Galvanized Steel

Yield Strength	(Mpa) 280-320
Tensile Strength	(Mpa) 340-390
Elongation	20%-30%
Reverse Impact	9J
T-bending	≥2T
Pencil Hardness	≥2H
Duration Of Salt Spray Test	500 H
Bending At 180 Degree	No crack, purling and fraction

Applications OfPrepainted Galvanized Steel

It can be widely used in transportation, light industry, civil usage and farming. It is also the perfect building material in construction for making steel roofing,insulation panel, corrugate sheet, facade wall,shutters,T-bar and home appliance.

Q: What are the common coil loading and unloading procedures?: The common coil loading and unloading procedures typically involve the use of specialized equipment such as cranes or forklifts to safely lift and transport the coils. The procedure may vary depending on factors such as the size and weight of the coils, as well as the specific requirements of the industry. Generally, the coils are loaded or unloaded by carefully positioning them onto or off of a designated storage area or transportation vehicle. The process often includes securing the coils with straps or clamps to prevent any movement or damage during transportation. Proper handling and adherence to safety protocols are crucial to ensure the successful loading and unloading of coils.

Q: What are the major global steel coil markets?: The major global steel coil markets are primarily concentrated in regions with significant industrial and manufacturing sectors. Some of the key markets include North America, Europe, and Asia-Pacific. North America, particularly the United States, is a major steel coil market due to its large automotive industry and construction sector. The demand for steel coil in this region is driven by the production of automobiles, infrastructure development, and residential construction. Europe is another significant market for steel coil, with countries like Germany, Italy, and France being major consumers. The automotive industry, construction sector, and machinery manufacturing contribute to the demand for steel coil in this region. Asia-Pacific, specifically China, is the largest market for steel coil globally. China's booming economy, rapid urbanization, and infrastructure development have led to a massive demand for steel coil. Other countries in the region, such as Japan, South Korea, and India, also have substantial steel coil markets due to their industrial and construction activities. Additionally, emerging markets in Latin America, the Middle East, and Africa are witnessing increasing demand for steel coil. These regions are experiencing economic growth and urbanization, leading to a rise in construction and infrastructure projects. Overall, the major global steel coil markets are driven by industrial and manufacturing activities, infrastructure development, and construction projects in various regions around the world.

Q: What are the factors affecting the price of steel coils?: There are several factors that can affect the price of steel coils. These include the cost of raw materials used in the production of steel, such as iron ore and coal. Additionally, the global supply and demand for steel can also impact prices. Other factors can include currency exchange rates, trade policies, transportation costs, and market competition. Overall, the price of steel coils is influenced by a combination of economic, environmental, and geopolitical factors.

Q: How are steel coils inspected for yield strength using tensile testing?: Steel coils are inspected for yield strength using a testing technique called tensile testing. Tensile testing involves subjecting a sample of the steel coil to controlled tension until it reaches its breaking point. This test helps determine various mechanical properties of the steel, including yield strength. To inspect steel coils for yield strength using tensile testing, a small strip of the coil is cut and prepared for testing. The strip is placed in a tensile testing machine, which consists of two grips that firmly hold the strip at opposite ends. The machine then applies a steadily increasing force to the strip, causing it to elongate until it ultimately breaks. During the test, the machine measures the force applied and the elongation of the strip. The yield strength is determined by identifying the point on the stress-strain curve where the material begins to deform plastically, or exhibit permanent deformation without any increase in load. The yield strength is typically reported as the stress required to cause a specific amount of plastic deformation, commonly 0.2% or 0.5%. This value represents the maximum stress that the steel can withstand without permanent deformation occurring. By conducting tensile testing on a sample of the steel coil, it is possible to determine its yield strength. This information is crucial for ensuring the quality and reliability of the steel coil, as it indicates the maximum stress it can withstand before permanent deformation occurs. Additionally, this testing method allows for the evaluation of other mechanical properties, such as ultimate tensile strength, elongation, and modulus of elasticity, providing a comprehensive understanding of the steel's performance characteristics.

Q: How are steel coils inspected for weldability using welding tests?: Steel coils can be inspected for weldability using a variety of welding tests. One common method is the bend test, where a section of the coil is cut and bent to evaluate the quality of the weld. This test helps determine if the weld is brittle or contains any defects that could compromise its integrity. Additionally, the guided bend test is performed to assess the ability of the weld to withstand bending without cracking or breaking. Another technique used is the macro etch test, where a sample is prepared by cutting a cross-section of the coil and then etching it with a chemical solution. This test helps reveal any imperfections or inconsistencies in the weld, such as porosity, slag inclusions, or lack of fusion. Furthermore, the hardness test is conducted to measure the hardness of the weld. This is important as excessive hardness can lead to cracking or brittleness, while insufficient hardness may result in weld failure under certain conditions. Additionally, non-destructive testing methods like ultrasonic testing, magnetic particle inspection, or radiographic examination can also be employed to detect any internal defects, such as cracks or voids, in the steel coil welds without damaging the material. These welding tests are crucial in ensuring the quality and weldability of steel coils before they are used in various applications. By conducting thorough inspections, any potential issues can be identified and addressed, ensuring that the steel coils meet the required standards for weldability and structural integrity.

Q: How are steel coils processed before they are used in manufacturing?: Before being used in manufacturing, steel coils undergo several processing steps. The initial step, known as pickling, entails immersing the coils in an acid bath to eliminate any surface impurities such as rust or scale. This step serves to enhance the surface quality of the steel. After pickling, the coils are subjected to a process called cold rolling. This involves passing the coils through a set of rollers to decrease their thickness and enhance their dimensional accuracy. Additionally, cold rolling enhances the mechanical properties of the steel, rendering it stronger and more durable. Following cold rolling, the coils are annealed. This process involves heating the coils to a specific temperature and gradually cooling them. Annealing helps to alleviate internal stresses within the steel and improve its formability and ductility. Subsequently, the coils may undergo further surface treatments, such as galvanizing or coating. Galvanizing involves applying a layer of zinc to protect the steel from corrosion, while coating may involve applying various types of paint or polymer to enhance the steel's appearance or provide specific functionalities. Once the coils have undergone the necessary processing and treatments, they are typically cut into smaller sheets or strips according to the manufacturing requirements. These sheets or strips can then be utilized in various manufacturing processes, including stamping, forming, welding, or fabrication, to create a diverse array of products, ranging from automotive components to appliances, construction materials, and more. In summary, steel coils go through a series of processing steps, including pickling, cold rolling, annealing, and surface treatments, before they are prepared for use in manufacturing. These processes result in improved quality, strength, and formability of the steel, enabling it to be transformed into a wide range of products.

Q: I feel really stupid asking this question but i feel like a put metal/steel strings on my classical guitar how do you tell the difference?: Nylon strings are made of nylon; steel strings are made of .... if you put steel strings on your nylon string (classical style) guitar, you will destroy it. The instrument cannot stand up under the tension required for the strings, they will not fit in the saddle properly, they will cut the nut, and your machine heads may break. ... now if you're asking about the three lowest strings, those are metal wound around nylon on a nylon string guitar.

Q: How are steel coils coated to prevent corrosion?: Steel coils are coated to prevent corrosion through a process known as galvanization. This involves applying a protective layer of zinc onto the surface of the steel coils. The zinc acts as a barrier, preventing the steel from coming into contact with moisture and oxygen, which are the main causes of corrosion. This coating not only provides excellent corrosion resistance but also enhances the durability and longevity of the steel coils.

Q: How are steel coils used in the manufacturing of defense equipment?: Steel coils are used in the manufacturing of defense equipment as they provide strength, durability, and resistance to impact and stress. These coils are typically used to fabricate various components, such as armor plates, vehicle frames, and missile bodies, which are crucial for the protection and functionality of defense equipment.

Q: How are steel coils used in the production of fencing materials?: Steel coils are used in the production of fencing materials by being unwound and flattened to create the wire used for fencing. The steel wire is then further processed and shaped into different forms, such as chain link or barbed wire, to meet specific fencing needs.

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