Hot-dip Galvanized steel Coils and sheets

Hot-dip Galvanized steel Coils and sheets System 1

Hot-dip Galvanized steel Coils and sheets

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Loading Port:: China main port

Payment Terms:: TT OR LC

Min Order Qty:: 25 m.t.

Supply Capability:: 10000 m.t./month

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1.Structure of Prepainted Galvanized steel Coil

With Gi as base metal, after pretreatmet (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 ( PPGI) .Pre-painted galvanized steel is good capable of decoration ,molding, corrosion resistance

2.Main Features of Pre-painted Galvanized steel Coil

• Excellent process capability

• Smooth and flat surface

• Workability, durability

• Excellent heat resistance performance

• High strength

• Good formability

• Good visual effect

3.Pre-painted Galvanized steel Coil Images

4. Pre-painted Galvanized steel Coil Specification

Standard: ASTM, GB,JIS,JIS G3302 ASTM 755 EN10169

Grade: DX51D CGCC CS

Thickness: 0.13mm~3.0mm,

Width: 1250,600-1250mm

Coil weight:3-12 MT

Coil ID:508/610mm

Chemical composition:

0.150

0.476

11.231

12.50

0.900

0.039

0.010

5.FAQ of Prepainted Galvanized steel Coi

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

1.How do you control your quality

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 we will receive the goods ？

After receiving your deposit or workable lc ,our normal shipment date is 15-20days,and it takes around 28 days to reach your port of destination. But is up to different destination

Q: Why does steel with several composites have a greater hardenability from quenching than low carbon steel alloys?Any help would be great: Bit tricky to explain and I don't know muh about it but steel on its own has lost of gaps in it ( the molecular structure) and when carbon is added thos gaps are filled, I think of it like this: it is easier to punch through expanded polystyrene( with all the little balls) than unexpanded(just a lump of plastic) as the balls are not properly joined and have air pockets between them.

Q: I am a beginner (never played before!) and I am going to try to teach myself since I think it is a lovely instrument. I am fourteen-years-old so I am not 'adult-size', haha. Anyway, what is difference between nylon strings and steel strings?Thanks :): Small guitars easier to find in classical range. I assume their must be small steel strings but not seen them.

Q: steel bollard poles?: They're short steel posts that are used as a barrier to keep traffic out of an area. If you want to see an example Google it and look at the pics.

Q: How do steel coils contribute to sustainability in construction?: Several factors contribute to the sustainability of construction when it comes to steel coils. To begin with, steel is an incredibly durable material with a long lifespan. Its use in the construction of structural components like beams, columns, and frames ensures the stability and strength of buildings. This durability translates to reduced maintenance requirements and a longer service life for structures. As a result, the need for frequent repairs or replacements is diminished, leading to a decrease in the overall environmental impact associated with material waste and energy consumption. Moreover, steel is highly recyclable. Steel coils can be easily recycled and reused in new construction projects. The recycling process for steel has a significantly lower environmental impact compared to the production of new steel. By incorporating recycled steel coils into construction projects, the demand for new steel production is reduced, resulting in lower greenhouse gas emissions and a smaller carbon footprint. This approach helps conserve natural resources, reduces the extraction of raw materials, and minimizes energy consumption in steel production. Additionally, steel is an ideal material for off-site prefabrication. This means that steel coils can be manufactured in controlled environments in factories, minimizing construction waste and improving construction efficiency. Prefabricating steel coils reduces on-site material waste and decreases the need for transportation of construction materials. Consequently, this reduces air pollution and energy consumption during construction. Furthermore, steel's high strength-to-weight ratio allows for lighter and more efficient structures. By using steel coils, construction projects can optimize material usage, resulting in reduced material consumption and lessening the overall environmental impact. The lightweight nature of steel coils also facilitates easier transportation, reducing fuel consumption and associated emissions during delivery. In summary, steel coils contribute to the sustainability of construction through their durability, recyclability, prefabrication capabilities, and high strength-to-weight ratio. By utilizing steel coils, construction projects can minimize waste, conserve resources, reduce energy consumption, and decrease the environmental impact, ultimately promoting a more sustainable built environment.

Q: What are the different methods of forming steel coils?: There are several methods used for forming steel coils, depending on the specific requirements and applications. These methods include hot rolling, cold rolling, and continuous casting. Hot rolling is the most common method used for forming steel coils. It involves heating the steel billet or ingot to high temperatures and then passing it between a series of rollers to reduce its thickness and shape it into a coil. This process is typically performed above the recrystallization temperature of the steel, which allows for better shaping and improved mechanical properties. Cold rolling, on the other hand, is a process that is performed at or near room temperature. It involves passing the steel through a series of rollers to reduce its thickness and shape it into a coil. Cold rolling is often employed to produce steel coils with precise dimensions and excellent surface finish. It can also increase the strength and hardness of the steel. Continuous casting is another method used for forming steel coils. It involves pouring molten steel into a continuous casting machine, where it is solidified into a strand. The strand is then continuously fed into a series of rollers, which shape it into a coil. Continuous casting offers several advantages, such as improved efficiency, reduced energy consumption, and better control over the steel's composition and quality. In addition to these primary methods, there are various secondary processes involved in forming steel coils. These include pickling, annealing, and coating. Pickling removes any rust or scale from the surface of the steel, ensuring a clean and smooth finish. Annealing involves heating the steel to a specific temperature and then slowly cooling it, which helps to improve its ductility and reduce internal stresses. Coating is often applied to steel coils to provide corrosion resistance or enhance its aesthetic appeal. In summary, the different methods of forming steel coils include hot rolling, cold rolling, and continuous casting. Each method offers unique advantages and is chosen based on the specific requirements of the steel product. Additionally, secondary processes such as pickling, annealing, and coating are often employed to further enhance the quality and performance of the steel coils.

Q: What are the different types of steel coil cutting machines?: In the market, there is a wide range of steel coil cutting machines available, each tailored to meet specific needs and requirements. Some commonly used types include: 1. Slitting Machines: These machines are utilized to cut steel coils into narrower strips. Equipped with multiple circular blades, they are capable of making precise cuts along the length of the coil, enabling the production of narrower coils or strips. 2. Cut-to-Length Machines: Designed to cut steel coils into specific lengths, these machines possess the ability to accurately measure and cut the coil to the desired length, ensuring uniformity and precision. 3. Rotary Shears: Rotary shears are robust cutting machines that can handle thicker and larger steel coils. Utilizing a rotating blade, they are suitable for cutting thicker gauge materials. 4. Multi-Blanking Machines: Intended for cutting steel coils into multiple smaller blanks simultaneously, these machines have the capability to cut the coil into various shapes and sizes. This makes them ideal for producing multiple parts from a single coil. 5. Slit and Cut-to-Length Combination Machines: These machines integrate the functionalities of both slitting and cut-to-length machines, enabling the cutting of narrow strips and lengths in a single process. They offer versatility and efficiency, saving time and increasing productivity. Each type of steel coil cutting machine possesses distinct advantages and is suitable for specific applications. The choice of machine depends on factors such as coil thickness, desired strip width, required length accuracy, and production volume.

Q: i need flint and steel. are there common household items i can get the flint and the steel from????: no common flint and steel in the house === you need to buy a Boy Scout - flint and steel fire starter kit === or a BIC lighter ... the other thing is a small jar filled with water [[ capped and water level near the top.]] hold the water-jar over some

Q: How are steel coils used in the production of electronic devices?: Steel coils are used in the production of electronic devices for various purposes, such as creating magnetic fields, providing structural support, and acting as conductors in transformers and inductors. These coils are typically wound around a core material, such as ferrite or laminated iron, to enhance their magnetic properties and improve their performance in electronic circuits.

Q: How do you prevent damage to steel coils during transportation?: To prevent damage during the transportation of steel coils, there are several measures that can be taken: 1. Tight and secure packaging: It is important to pack the steel coils tightly and securely to prevent any movement or shifting during transportation. This can be achieved by using appropriate packaging materials such as steel cradles, wooden dunnage, or steel straps to hold the coils in place. 2. Use cushioning materials: Adding cushioning materials like foam padding, cardboard, or bubble wrap between the coils can help absorb shocks and vibrations during transit. This additional layer of protection minimizes the risk of scratches, dents, or other damages caused by contact with other objects or surfaces. 3. Handle and load properly: It is crucial to use proper lifting equipment and techniques to avoid mishandling and dropping of the steel coils. Carefully lifting and loading the coils onto transportation vehicles using forklifts or cranes is recommended. Additionally, stacking the coils in a way that distributes weight evenly helps maintain stability. 4. Protect from weather: Steel coils are susceptible to corrosion, so it is essential to shield them from moisture and adverse weather conditions during transportation. Covering the coils with waterproof and weather-resistant tarps or shrink wrap prevents water or moisture from reaching the steel surfaces. 5. Regular inspections: Conducting regular inspections before, during, and after transportation is vital to identify any potential damage or issues. This allows for timely intervention to rectify any problems and prevent further damage. 6. Trained personnel: It is crucial to ensure that personnel involved in handling, loading, and transporting the steel coils are properly trained. They should be knowledgeable about the correct procedures and techniques to safely handle and transport the coils, reducing the risk of damage. By implementing these preventive measures, the likelihood of damage to steel coils during transportation can be significantly reduced, ensuring that the coils reach their destination in optimal condition.

Q: What are the common welding defects in steel coils?: There are several common welding defects that can occur in steel coils during the welding process. These defects include: 1. Porosity: This is characterized by small holes or voids in the weld metal, which are caused by gas entrapment during the welding process. It can weaken the weld and make it more susceptible to corrosion. 2. Lack of fusion or incomplete penetration: This defect occurs when there is inadequate fusion between the base metal and the weld metal, or when the weld metal does not fully penetrate the joint. It can result in a weak or brittle weld. 3. Cracks: Cracks can occur in the weld metal or in the heat-affected zone (HAZ) of the base metal. They can be caused by factors such as high stress levels, improper cooling, or inadequate preheating. Cracks can significantly reduce the strength and integrity of the weld. 4. Undercutting: Undercutting is a groove or depression that forms at the toe of the weld due to excessive melting of the base metal. It weakens the weld and can lead to stress concentration and potential failure. 5. Excessive spatter: Spatter refers to the small droplets of molten metal that are expelled from the welding arc and can land on the surface of the steel coil. Excessive spatter can result in a rough or uneven surface finish and may require additional cleaning or grinding. To minimize these welding defects in steel coils, it is important to ensure proper weld preparation, including cleaning and removing any contaminants from the surface of the steel. Additionally, using the correct welding parameters, such as appropriate heat input and travel speed, can help to minimize defects. Regular inspection and quality control measures can also help to identify and address any defects before they become more serious issues.

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