Hot-dip Zinc Coating Steel Building Roof Sheets Prime Quality

Hot-dip Zinc Coating Steel Building Roof Sheets Prime Quality System 1

Hot-dip Zinc Coating Steel Building Roof Sheets Prime Quality

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 50 m.t.

Supply Capability:: 10000 m.t./month

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1.Structure of Hot-Dip Galvanized Steel Sheet 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 Sheet：

• Excellent process capability

• Smooth and flat surface

• Workability, durability

• Excellent anticorrosive property

• High strength

• Good formability

• Good visual effect

3.Hot-Dip Galvanized Steel Sheet Images

Hot-dip Zinc Coating Steel Building Roof Sheets Prime Quality

4.Hot-Dip Galvanized Steel Sheet Specification

Standard: ASTM, JIS,EN

Grade: CS, DX51D+Z,SGCC, SS 230~550,S220GD+Z~S550GD+Z, SGC340~SGC570

Thickness: 0.1mm~5mm

Width: max 2000mm

Coil weight:3-12 MT

Coil ID:508/610mm

Surface structure: zero spangle, regular spangle or minimum spangle

Surface treatment: Chromate treatment, Oiled/dry, skinpassed/non-skinpassed

Packing: Standard seaworthy export package

Technology test results:

Processability	Yield strength	Tensile strength	Elongation %	180°cold-bending
Common PV	-	270-500	-	d=0,intact,no zinc removal
Mechanical interlocking JY	-	270-500	-	d=0,intact,no zinc removal
Structure JG	>=240	>=370	>=18	d=0,intact,no zinc removal
Deep drawn SC	-	270-380	>=30	d=0,intact,no zinc removal
EDDQ SC	-	270-380	>=30	d=0,intact,no zinc removal

5.FAQ of Hot-Dip Galvanized Steel Sheet

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

1.How about your company？

A world class manufacturer & supplier of castings forging in carbon steel and alloy steel，is one of the large-scale professional investment casting production bases in China,consisting of both casting foundry forging and machining factory. Annually more than 8000 tons Precision casting and forging parts are exported to markets in Europe,America and Japan. OEM casting and forging service available according to customer’s requirements.

2.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.

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

Usually within thirty working days after receiving buyer’s advance payment or LC. We will arrange the factory manufacturing as soon as possible. The cargo readiness usually takes 15-30 days, but the shipment will depend on the vessel situation.

Q: What are the different sheet metal folding techniques for steel sheets?: Steel sheets can be subjected to various sheet metal folding techniques. These techniques find extensive application in industries like automotive, aerospace, and construction for creating intricate shapes and structures. Some frequently used sheet metal folding techniques for steel sheets comprise: 1. Box and Pan Folding: This technique entails bending the sheet metal along multiple parallel edges to form a box-shaped structure. It is commonly utilized for manufacturing enclosures, cabinets, and trays. 2. Hemming: Hemming is employed to fold the edges of a sheet metal component, enhancing its rigidity and eliminating sharp edges. It finds prominent usage in the automotive sector for fabricating panels and body parts. 3. Brake Press Folding: Brake press, a machine tool utilizing hydraulic or mechanical press, is employed to bend the sheet metal. Precise and accurate folding is facilitated by adjusting the bend's angle and depth. Brake press folding is a frequently employed technique in sheet metal fabrication. 4. Roll Forming: Roll forming is a continuous bending process wherein the sheet metal passes through a series of rollers, gradually shaping it into the desired profile. It is suitable for creating elongated and continuous shapes like tubes and channels. 5. Rotary Folding: In this technique, a rotating tool is utilized to fold the sheet metal along a curved or circular path. It is often applied to create rounded edges, curves, and cylindrical shapes. 6. Folding Machines: Folding machines are specifically designed to fold sheet metal by applying pressure along a predetermined line. These machines can be programmed to carry out various folding operations, including simple bends, complex shapes, and multiple folds. Each of these sheet metal folding techniques possesses its own advantages and limitations. The selection of a particular technique depends on factors such as the design's complexity, required precision, and production volume. Skilled craftsmen and specialized machinery are frequently employed to ensure accurate and efficient folding of steel sheets.

Q: Are steel sheets suitable for pedestrian bridges or walkways?: Yes, steel sheets are suitable for pedestrian bridges or walkways. They offer high strength, durability, and resistance to wear and tear, making them ideal for supporting both pedestrian traffic and the weight of the structure. Additionally, steel sheets can be easily fabricated and installed, allowing for efficient construction of safe and reliable walkways or bridges.

Q: What are the different color options available for steel sheets?: The different color options available for steel sheets include various shades of gray, black, white, as well as a wide range of custom colors that can be achieved through paint or coating applications.

Q: What is the difference between a pre-annealed and full hard steel sheet?: A pre-annealed steel sheet refers to a steel sheet that has undergone the annealing process, which involves heating the steel to a specific temperature and then cooling it slowly. This process helps to relieve internal stresses in the steel and improve its ductility and workability. As a result, pre-annealed steel sheets possess higher levels of formability and are easier to shape and manipulate compared to their non-annealed counterparts. On the other hand, a full hard steel sheet has not undergone the annealing process and retains its original hardness and strength. Full hard steel sheets are typically used in applications that require high strength, durability, and resistance to deformation. These sheets are more rigid and less ductile, making them suitable for applications where shape retention and stiffness are critical, such as in automotive components or structural supports. In summary, the main difference between pre-annealed and full hard steel sheets lies in their formability and strength characteristics. Pre-annealed steel sheets are more malleable and easier to shape, while full hard steel sheets offer higher strength and rigidity. The choice between the two depends on the specific requirements of the application and the desired balance between formability and strength.

Q: What is the hardness of the wear-resistant steel plate?: The microhardness of the wear-resisting layer of the wear-resisting steel plate can reach HVl700 ~ 2000, and the surface hardness can reach HRc58 to 62. The wear-resistant layer of the wear-resistant steel plate is mainly made of chromium alloy, and other alloy components such as manganese, molybdenum, niobium and nickel are added. The carbides in the metallographic structure are distributed in a fibrous direction, and the direction of the fiber is perpendicular to the surface.

Q: What is the process of applying insulation materials to steel sheets?: The process of applying insulation materials to steel sheets typically involves several steps. First, the steel sheets are thoroughly cleaned and prepared to ensure proper adhesion of the insulation material. Then, a layer of adhesive is applied to the surface of the steel sheets. Next, the insulation material, such as foam or fiberglass, is cut and shaped to fit the dimensions of the steel sheets. The insulation material is then carefully placed onto the adhesive-coated steel sheets, ensuring proper alignment and coverage. Finally, the insulation material is pressed or secured in place to ensure a tight bond with the steel sheets.

Q: What is the difference between a galvanized and stainless steel sheet?: Both galvanized and stainless steel sheets are utilized in various applications, but there are notable distinctions between the two materials. One significant difference is their resistance to corrosion. Galvanized steel sheets are coated with zinc to shield them from rust and corrosion, making them ideal for outdoor applications or environments with high humidity or moisture. Conversely, stainless steel sheets are composed of chromium and other alloys, granting them superior corrosion resistance. They can endure exposure to chemicals, acids, and saltwater, making them suitable for highly corrosive environments. Another disparity lies in their appearance. Galvanized steel sheets possess a characteristic silver-gray color due to the zinc coating. Over time, the zinc coating can acquire a dull, weathered appearance. In contrast, stainless steel sheets possess a distinct, shiny appearance that can vary based on the applied finish. This makes stainless steel sheets more visually appealing and suitable for applications where aesthetics matter. In terms of strength and durability, stainless steel sheets tend to surpass galvanized steel sheets. Stainless steel has a higher tensile strength, enabling it to withstand more force or pressure before breaking. Additionally, stainless steel is more resistant to dents and scratches compared to galvanized steel. Cost is another factor to consider when choosing between galvanized and stainless steel sheets. Generally, galvanized steel sheets are more cost-effective than stainless steel sheets. This makes them a viable option for applications where corrosion resistance is not of utmost importance. Conversely, stainless steel sheets are pricier due to the higher cost of raw materials and the additional processing required to create the stainless steel alloy. To summarize, the main distinctions between galvanized and stainless steel sheets lie in their corrosion resistance, appearance, strength, and cost. Galvanized steel sheets offer decent corrosion resistance at a lower cost, while stainless steel sheets provide superior corrosion resistance, strength, and a more appealing appearance at a higher price point.

Q: Can steel sheets be used in mining applications?: Yes, steel sheets can be used in mining applications. Steel sheets are commonly used in mining due to their durability, strength, and resistance to wear and tear. They can be utilized in various mining equipment such as conveyor systems, ore processing machinery, and storage containers to handle the harsh and demanding conditions commonly found in mining operations.

Q: Can steel sheets be used for shipbuilding?: Yes, steel sheets can definitely be used for shipbuilding. In fact, steel is one of the most commonly used materials in shipbuilding due to its excellent strength, durability, and resistance to corrosion. Steel sheets are typically used to construct the hull, decks, and other structural components of a ship. The high tensile strength of steel allows ships to withstand the harsh conditions of the ocean, including heavy waves and extreme weather. Additionally, steel sheets can be easily fabricated and welded together, making them ideal for constructing large and complex ship structures. Overall, steel sheets are a reliable and efficient choice for shipbuilding.