Prepainted Galvanized roofing sheet System 1

Prepainted Galvanized roofing sheet

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: -

Supply Capability:: 5000 m.t./month

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Pre painted Galvanized roofing sheet

1> thickness: 0.12mm - 4.5mm
2> width:762mm/914mm/1200mm
3> length:Any length
4> basic material: galvanized steel sheet, Aluminum steel sheet

5> Zinc (Al) coating: 60g/m2 - 270g/m2

6> shape: corrugated

7> mainly usage: roof.

8> color: RAL card

9> Package: standard export package or as customer's requirement

Corrugated steel sheet
species	Galvanized corrugatsheeted steel	Prepainted galvanized corrugated steel sheet (Color coated corrugated steel sheet)
Surface	big spangle, small spangle, no spangle	Color coated as Ral series colors
thickness	0.12mm - 4.5mm	0.12mm - 4.5mm
width	672mm - 1250mm or as customer's demand	672mm - 1250mm or as customer's demand
length	1m-12m or as customer's requirement	1-12m or as customer's requirement
basic material	cold rolled steel coil	galvanized steel coil
Process	Cold rolled steel coil + hot galvanized + corrugated	Cold rolled steel coil + hot galvanized + color coated + corrugated

Q:Are steel sheets suitable for elevator doors?: Yes, steel sheets are suitable for elevator doors as they offer high durability, strength, and security. They can withstand frequent use, resist impact and vandalism, and provide a sleek and modern appearance.

Q:What is the difference between a satin and mirror finish steel sheet?: The main difference between a satin and mirror finish steel sheet lies in their appearance. A satin finish has a smooth, brushed texture with a muted sheen, while a mirror finish has a highly reflective, glossy surface that resembles a mirror. The satin finish is achieved through a process of sanding or brushing the steel, creating fine lines or grain, whereas a mirror finish requires additional polishing and buffing to achieve its reflective quality.

Q:What is the difference between a hot rolled and cold rolled galvanized steel sheet?: The main difference between a hot rolled and cold rolled galvanized steel sheet lies in the manufacturing process and the resulting properties of the finished product. Hot rolled galvanized steel sheets are made by heating a large steel slab or billet above its recrystallization temperature, which is typically around 1700°F (926°C). This high temperature allows the steel to be easily shaped and formed into the desired thickness and dimensions. The hot rolling process also helps to refine the grain structure of the steel, resulting in improved mechanical properties and a more uniform distribution of alloying elements. On the other hand, cold rolled galvanized steel sheets are manufactured at room temperature by passing the hot rolled sheet through a series of rollers that compress and shape the material. This process not only reduces the thickness of the sheet but also increases its tensile strength and improves its surface finish. Cold rolling also allows for tighter tolerances and more precise dimensions, making it suitable for applications that require high precision and consistency. In terms of properties, hot rolled galvanized steel sheets tend to have a rougher surface finish due to the high temperature processing. However, they are generally more ductile and easier to form or bend compared to cold rolled sheets. Hot rolled sheets also have a slightly thicker oxide layer on the surface, which provides some additional corrosion resistance. Cold rolled galvanized steel sheets, on the other hand, have a smoother and more polished surface finish. They are typically thinner and have a higher strength-to-weight ratio compared to hot rolled sheets. The cold rolling process also results in a more homogeneous microstructure, which can improve the overall mechanical properties of the steel, such as hardness and toughness. Overall, the choice between hot rolled and cold rolled galvanized steel sheet depends on the specific requirements of the application. Hot rolled sheets are often preferred for applications that require easy formability and a rougher surface finish, while cold rolled sheets are favored for their higher strength, tighter tolerances, and smoother surface finish.

Q:What is the difference between a smooth and perforated stainless steel sheet?: A smooth stainless steel sheet is one that possesses a uniform and flat surface, devoid of any visible texture or patterns. It finds its typical usage in scenarios where a sleek and polished appearance is sought after, like in architectural designs or decorative elements. In contrast, a perforated stainless steel sheet is characterized by the presence of small or large holes that have been punched or drilled into it, resulting in an arrangement of openings on its surface. These openings can take various shapes, such as round, square, or any other, depending on the desired aesthetic or functional requirements. Perforated sheets are commonly employed in situations where ventilation, filtration, or visibility is necessary, such as in industrial equipment, acoustic panels, or safety grating. The primary distinction between a smooth and perforated stainless steel sheet lies in the presence or absence of holes on the surface. While a smooth sheet offers a pristine and uninterrupted appearance, a perforated sheet offers several advantages, including improved airflow, enhanced visibility, and increased sound absorption. Furthermore, the choice between a smooth or perforated sheet hinges on the specific application and the desired functionality. Smooth sheets are ideal for situations that call for a seamless and polished look, while perforated sheets are well-suited for applications that necessitate functionality, such as filtering, screening, or facilitating airflow.

Q:Are steel sheets resistant to impact and abrasion?: Yes, steel sheets are generally resistant to both impact and abrasion due to their high strength and durability. They can withstand heavy loads and are less prone to denting or scratching, making them suitable for applications that require protection against impacts and abrasions.

Q:Can the steel sheets be cut easily?: Yes, steel sheets can be cut easily with the right tools and techniques. Steel is a strong and durable material, but it can be cut using techniques such as shearing, sawing, or using plasma or laser cutting machines. The ease of cutting steel sheets also depends on their thickness and the specific type of steel being used. Thinner sheets are generally easier to cut than thicker ones. Additionally, using appropriate cutting tools and following proper safety measures can ensure a smooth and efficient cutting process.

Q:What are the common sizes of steel sheets available in the market?: The common sizes of steel sheets available in the market vary, but some standard sizes include 4x8 feet, 4x10 feet, and 5x10 feet. These sizes are widely used in various industries and can be easily found in steel suppliers or hardware stores.

Q:How are steel sheets protected from damage during handling and transportation?: Steel sheets are protected from damage during handling and transportation through various methods. One commonly used method is the application of a protective coating on the surface of the steel sheets. This coating can be in the form of a special paint or a layer of zinc, known as galvanization. The protective coating acts as a barrier, preventing any moisture or corrosive elements from reaching the steel sheets and causing damage. In addition to the protective coating, steel sheets are often stacked and secured properly to ensure their stability during transportation. They are usually placed on wooden pallets or in specially designed crates to prevent any direct contact with the ground or other surfaces. This helps minimize the risk of scratches, dents, or other physical damage that may occur during handling or transportation. Furthermore, steel sheets are often packaged and wrapped with materials such as plastic or stretch film to provide an extra layer of protection. This packaging helps safeguard the sheets from dust, dirt, and other contaminants that may affect their quality or appearance. Moreover, steel sheets may be equipped with edge protectors made of plastic or cardboard. These edge protectors prevent any impact or compression damage to the edges of the sheets, which are particularly susceptible to deformation. Finally, proper handling and lifting techniques are essential in safeguarding steel sheets during transportation. Employing specialized equipment such as forklifts or cranes with suitable clamps or magnets ensures that the sheets are lifted and moved without causing any bending or warping. Overall, a combination of protective coatings, proper packaging, and careful handling techniques are employed to safeguard steel sheets from damage during handling and transportation, ensuring their quality and integrity upon arrival at their destination.

Q:What is the process of perforating steel sheets?: The process of perforating steel sheets involves creating holes or patterns in the metal by using specialized machinery or tools. This can be done through various methods such as punching, drilling, or laser cutting, depending on the desired shape and size of the perforations. The perforation process allows for increased ventilation, light transmission, or aesthetic design in steel sheets, making them suitable for various applications in industries such as construction, automotive, or manufacturing.

Q:Can steel sheets be used for structural beams?: No, steel sheets cannot be used for structural beams. Structural beams are typically made from rolled or extruded sections of steel, known as I-beams or H-beams, which have a specific shape and strength to bear heavy loads and support structures. Steel sheets, on the other hand, are flat and thin and are commonly used for cladding, roofing, or other non-structural applications.

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