Hot-Dip Galvanized Strips and Coils from China

Hot-Dip Galvanized Strips and Coils from China System 1

Hot-Dip Galvanized Strips and Coils from China

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 25 m.t.

Supply Capability:: 20000 m.t./month

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1.Structure of Hot-Dip Galvanized Steel Strips Description：

Hot-dip galvanized steel coils are available with a pure zinc coating through the hot-dip galvanizing process. It offers the economy, strength and formability of steel combined with the corrosion resistance of zinc. The hot-dip process is the process by which steel gets coated in layers of zinc to protect against rust. It is especially useful for countless outdoor and industrial applications. Production of cold formed corrugated sheets and profiles for roofing, cladding, decking, tiles, sandwich walls, rainwater protective systems, air conditioning duct as well as electrical appliances and engineering.

2. Main Features of the Hot-Dip Galvanized Steel Strips：

• Excellent process capability

• Smooth and flat surface

• Workability, durability

• Excellent anticorrosive property

• High strength

• Good formability

• Good visual effect

3. Hot-Dip Galvanized Steel Strips Images

Hot-Dip Galvanized Strips and Coils from China

4. Hot-Dip Galvanized Steel Strips Specification

1) Capacity: about 15,000 tons per month for sheet product.
2) Standard: JIS G3302 1998, ASTM A653M/A924M 2004, all according to the customer's request
3) Thickness: 0.13mm-0.5mm
4) Width: 400mm-1000mm
5) Length: We can adjust the length according to your request
6) Zinc Coating Weight: 60g/m2-275g/m2
7) Raw Materials: Galvanized steel sheet and Pre-painted galvanized steel sheet
8) Spangle: Regular spangle, minimized spangle and zero spangle
9) Hardness: Full hard, normal

5.FAQ of Hot-Dip Galvanized Steel Strips

We have organized several common questions for our clients，may help you sincerely：

1. How to guarantee the quality of the products？

We have established the international advanced quality management system，every link from raw material to final product we have strict quality test；We resolutely put an end to unqualified products flowing into the market. At the same time, we will provide necessary follow-up service assurance.

2. How long can we receive the product after purchase?

Production period is 30 days. And we’d prefer you can give us more time to book vessel.

3. What’s the usage of cold rolled steel coil?

Auto manufacture, Oil drum, Transformer's tank panel, Furniture etc.

Q:What are the challenges in coil leveling for coated steel?: Coil leveling for coated steel presents several challenges that need to be addressed in order to achieve high-quality, flat, and smooth coils. Firstly, one of the main challenges is the potential for coating damage during the leveling process. Coated steel coils are typically coated with materials such as zinc or paint, which can be easily scratched or marred if not handled properly. The leveling process involves passing the coil through a set of leveling rolls, which can potentially cause friction, abrasion, or other mechanical damage to the coating. Therefore, it is crucial to carefully control the speed, pressure, and alignment of the leveling rolls to minimize coating damage. Secondly, the thickness variation across the coil presents a significant challenge. Coated steel coils often have thickness variations due to inherent material properties or production processes. These variations can result in uneven leveling and can lead to coils with waviness or uneven flatness. Achieving uniform leveling across the entire coil surface is essential to ensure consistent quality and appearance of the final product. Another challenge in coil leveling for coated steel is the possibility of coil shape distortion. Coating processes can introduce stresses into the steel, which can cause the coil to warp or distort during the leveling process. This distortion can result in coils with uneven edges or inconsistent flatness. Proper control of the leveling process parameters, such as the number of leveling passes and the tension applied to the coil, is necessary to minimize shape distortion. Additionally, the coil leveling process can generate internal stresses in the steel itself, particularly in coated steels that have been cold-rolled or heat-treated. These internal stresses can cause coil spring-back, where the coil tries to return to its original shape after leveling. Spring-back can result in coils with unwanted curvature or uneven flatness. Effective strategies, such as stress relief annealing or using counteracting leveling techniques, are essential to minimize spring-back and achieve the desired flatness. Finally, the handling and storage of coated steel coils present challenges in maintaining the quality of the leveled coils. Coated steel coils are sensitive to environmental conditions such as humidity, temperature, and exposure to corrosive agents. Proper storage and handling practices are crucial to prevent coating damage, rust, or other forms of deterioration that can occur during transportation or storage. In summary, the challenges in coil leveling for coated steel include minimizing coating damage, addressing thickness variation, controlling shape distortion and spring-back, and ensuring proper handling and storage. Overcoming these challenges requires precise control of process parameters, the use of appropriate leveling techniques, and adherence to strict quality control measures throughout the entire process.

Q:How do steel coils contribute to energy efficiency in transportation?: There are several ways in which steel coils help improve energy efficiency in transportation. To begin with, steel coils are lightweight and have a high strength-to-weight ratio. This means that they require less steel material to carry the same load compared to other materials like wood or concrete. As a result, the overall weight of the transport vehicle is reduced, leading to lower fuel consumption and emissions. Furthermore, steel coils are extremely durable and can withstand harsh transportation conditions. They are highly resistant to corrosion, impact, and fatigue, ensuring a longer lifespan for the transport vehicle. This durability reduces the need for frequent repairs or replacements, resulting in reduced energy consumption and material waste. Moreover, steel coils are easily handled and transported. Due to their compact and standardized size, they can be effortlessly loaded and unloaded from trucks, trains, or ships. This efficiency in handling reduces the time and energy required for loading and unloading operations, ultimately increasing overall transportation efficiency. Additionally, steel coils can be efficiently stacked and stored, maximizing the utilization of available space in transport vehicles. This reduces the number of trips needed to transport the same amount of goods, resulting in less energy consumption and lower transportation costs. Lastly, steel is a highly recyclable material. At the end of their life cycle, steel coils can be easily recycled and used to produce new steel products. This reduces the demand for raw materials and the energy required for manufacturing new products, thereby contributing to overall energy efficiency in transportation. In conclusion, steel coils play a crucial role in enhancing energy efficiency in transportation. Their lightweight, durable, easy-to-handle, and recyclable nature leads to decreased fuel consumption, lower emissions, reduced maintenance needs, efficient use of space, and minimized material waste. All of these factors contribute to a more sustainable and energy-efficient transportation system.

Q:Are steel coils susceptible to damage during storage or transportation?: Yes, steel coils are susceptible to damage during storage or transportation. Factors such as mishandling, improper stacking, exposure to moisture or extreme temperatures, and inadequate packaging can lead to dents, scratches, corrosion, and even deformation of the coils. Adequate precautions and secure packaging are necessary to minimize the risk of damage during storage or transportation.

Q:What are the main factors that affect the paint adhesion on steel coils?: The main factors that affect paint adhesion on steel coils include surface preparation, cleanliness, and the presence of contaminants such as oil, grease, or rust. Other factors include the quality of the paint itself, the application method, and the curing process. Additionally, the type of steel and its surface condition can also influence paint adhesion.

Q:Could someone please explain what happens when steel is heat treated and why these happenings cause the steel to become harder? Please dig down into the micro details of the crystallites but in somewhat laymen's terms. Also describe the processes which achieve these results; if you have the time. Thanks for your time and effort.: Mild steel is a solution of carbon within iron, etc. When the steel is very hot the carbon is well distributed. As the steel is cooled iron crystals form excluding the carbon that will then collect at the boundaries (grain boundaries) between iron crystals. If cooling is rapid at any point in the cool down crystal growth will cease (affecting final grain size and the mix of carbon and iron at the grain boundaries). The ductility or hardness of the resulting steel will be determined by the grain sizes and makeup of the carbon/iron mix between grains. Ductile iron permits 'slabs' of iron to slip past each other within iron crystals and location of carbon atoms may help prevent slip resulting in hardness. Therefore, heat treatment usually consists of 'soaking' the steel at a temperature high enough to dissolve all the carbon uniformly then cooling it down slowly or rapidly to obtain optimum grain size and interstitial carbon between grains to obtain desired properties.

Q:The difference between aluminized color steel roll and ordinary color steel roll: Ordinary color steel roll is a composite material, also known as color coated steel plate, is used in the continuous production line on the production line after surface degreasing, phosphating and other chemical coating treatment, painted with organic coatings, made by baking products. Both steel and organic materials are a little bit different. Both the mechanical strength of steel plate and easy molding performance, but also organic materials, good decoration, corrosion resistance.

Q:In the warehouse management system of steel coil: Warehouse is an important component of enterprise material supply system. It is also the tache of enterprise material circulation and storage, and it also undertakes many functions of material management. Its main tasks are to keep the stock well, to be accurate, to be of good quality, to ensure safety, to prompt the people, to produce, to be considerate, to reduce costs, and to speed up capital turnover.

Q:How do steel coils resist corrosion?: Steel coils resist corrosion through a combination of factors including the presence of protective coatings, the use of corrosion-resistant alloys, and proper handling and storage practices. The most common method to prevent corrosion in steel coils is the application of protective coatings such as zinc, known as galvanization. This process forms a barrier between the steel and its environment, preventing exposure to moisture and corrosive elements. The zinc coating acts as a sacrificial layer, corroding in place of the steel. Another method to enhance corrosion resistance is the use of corrosion-resistant alloys, which are specifically designed to withstand harsh environments. These alloys contain elements such as chromium, nickel, or molybdenum, which form a passive oxide layer on the surface of the steel, protecting it from corrosion. Proper handling and storage practices also play a crucial role in preventing corrosion. Steel coils should be stored in a dry and well-ventilated area to minimize exposure to moisture. They should be protected from contact with other metals and materials that may cause galvanic corrosion. Regular inspection and maintenance are also important to identify and address any signs of corrosion early on. In summary, steel coils resist corrosion by utilizing protective coatings, corrosion-resistant alloys, and proper handling and storage practices. These measures work together to prolong the lifespan of steel coils and ensure their durability in various environments.

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?: Stainless okorder

Q:How are steel coils tested for quality?: Steel coils are tested for quality through a variety of methods, including visual inspections, measurements of dimension and weight, and mechanical tests such as tensile strength and hardness. Additionally, non-destructive testing techniques like ultrasonic or magnetic particle testing may be used to detect any potential defects or flaws within the coils. These comprehensive testing procedures ensure that the steel coils meet the required quality standards before they are used in various industries.

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