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: Can the steel sheets be easily drilled or machined?: Yes, steel sheets can be easily drilled or machined with the right tools and equipment.

Q: Are steel sheets resistant to high-pressure environments?: Yes, steel sheets are generally resistant to high-pressure environments. Steel is known for its excellent strength and durability, allowing it to withstand high pressures without deformation or failure. It is often used in various industries, including construction, oil and gas, and aerospace, where it is exposed to extreme pressures. However, the specific resistance of steel sheets to high-pressure environments can vary depending on the grade and thickness of the steel.

Q: What is the average cost of steel sheets per square foot?: The average cost of steel sheets per square foot can vary depending on factors such as thickness, quality, and market conditions. It is recommended to contact suppliers or conduct research to get the most accurate and up-to-date pricing information.

Q: How can the steel plate of flat welding 10mm make its deformation smaller?: The most simple way is to set up a few blocks in the weld transverse positioning plate, welding seam after cooling in the two side gently hammering stress relief force dismantled.

Q: Can steel sheets be used for automotive wheels?: No, steel sheets are not typically used for automotive wheels. Instead, wheels are commonly made from aluminum alloy due to its lighter weight and better performance.

Q: Is galvanized steel plate or iron plate?: In metallurgy, iron, pure iron, is not available in actual industrial production. Iron is a very active chemical element, which oxidizes rapidly in the air at room temperature. This is like some people say we have not seen the real 'aluminum' exposure to aluminum elements in the air immediately oxidized alumina, so we see in the normal is covered on the surface of alumina aluminum complex, real aluminum and we do not see. The activity of iron is second only to that of aluminum.

Q: How are steel sheets tested for quality?: To ensure compliance with required standards, various methods are employed to test the quality of steel sheets. Among these methods, the tensile strength test is commonly used. This test gauges the steel sheet's ability to withstand stress before breaking, thus determining its durability and reliability in different applications. Another significant test is the hardness test, which measures the steel sheet's resistance to indentation or scratching. Specialized tools like Brinell or Rockwell hardness testers are utilized for this purpose. The hardness test aids in assessing the steel sheet's capacity to endure wear and tear, making it suitable for specific applications. The thickness of the steel sheet is also examined using a micrometer or ultrasonic thickness gauge to ensure it meets the necessary specifications. This is crucial as the thickness directly impacts the sheet's strength and ability to withstand external forces. Furthermore, visual inspection is carried out by trained professionals to identify any surface defects such as cracks, pits, or corrosion. Through meticulous examination, any irregularities compromising the steel sheet's quality can be detected. Chemical composition analysis is another pivotal test that determines the presence and proportion of various elements in the steel sheet. Spectrometry or X-ray fluorescence techniques are employed to ensure the steel sheet meets the desired chemical requirements. Moreover, steel sheets may undergo additional tests such as impact testing, bend testing, and fatigue testing to evaluate their performance under specific conditions. These tests replicate real-world scenarios and assess the steel sheet's ability to withstand anticipated loads and stresses. In conclusion, steel sheets are subjected to rigorous quality testing to meet the necessary standards and provide customers with reliable and durable products. These tests enable manufacturers to identify potential flaws or defects, allowing them to rectify any issues and deliver high-quality steel sheets to the market.

Q: What are the different types of steel sheet finishes for marine applications?: Marine applications commonly employ several different types of steel sheet finishes to enhance durability and corrosion resistance in the face of constant exposure to moisture, saltwater, and harsh weather conditions. 1. Hot-dip galvanized: Among the most frequently used finishes for marine applications is hot-dip galvanization. This process involves coating the steel sheet with a layer of zinc, effectively safeguarding against corrosion. The zinc layer acts as a sacrificial barrier, preventing rust formation in the underlying steel. 2. Stainless steel: Highly resistant to corrosion, stainless steel sheets find widespread use in marine applications. These sheets are composed of a steel, chromium, and nickel alloy, providing exceptional strength and corrosion resistance. Different grades of stainless steel sheets are available, with 316 stainless steel being the most commonly utilized in marine environments. 3. Powder coating: Powder coating is a favored finish for steel sheets in marine applications. The process involves electrostatically applying a layer of powdered polymer to the steel sheet, which is then cured under heat to form a robust and durable coating. Powder coating offers good corrosion resistance and can be tailored in terms of color and texture. 4. Epoxy coating: To ensure superior protection against corrosion in marine environments, steel sheets are frequently treated with epoxy coatings. These coatings boast chemical resistance and excellent adhesion to the steel surface. Epoxy coatings are also renowned for their high impact and abrasion resistance. 5. Organic coating: Organic coatings, such as polyurethane or acrylic coatings, are employed to shield steel sheets in marine applications. These coatings create a protective barrier against corrosion and are commonly utilized in offshore structures, ships, and other marine equipment. It is important to consider various factors, including specific environmental conditions, budget, and desired aesthetics, when selecting a steel sheet finish for marine applications. Consulting with a professional or referring to industry standards and recommendations can aid in determining the most suitable finish for a particular marine application.

Q: Can steel sheets be used for making HVAC ducts?: Yes, steel sheets can be used for making HVAC ducts. Steel is a commonly used material in HVAC systems due to its durability, strength, and resistance to heat and corrosion. Steel sheets can be easily formed and fabricated into ductwork, making them suitable for air distribution in heating, ventilation, and air conditioning systems.

Q: What is the difference between hot-rolled and cold-rolled steel sheets?: The manufacturing process and resulting characteristics of steel sheets differ between hot-rolled and cold-rolled varieties. Hot-rolled steel sheets are produced by heating a large steel slab and passing it through high-temperature rollers. This allows for easy shaping and forming into various sizes and thicknesses. The elevated temperature also removes any residual stress in the steel, making it more flexible and moldable. Consequently, hot-rolled steel sheets possess a rougher surface finish and may exhibit a thin oxide layer called scale. However, they are generally less expensive and come in a wider range of sizes. In contrast, cold-rolled steel sheets are created by cooling down the hot-rolled steel and passing it through rollers at room temperature. This process not only reduces the steel's thickness but also enhances its surface finish and dimensional accuracy. Cold-rolling gives the steel sheets a smooth and shiny appearance, making them suitable for applications where aesthetics matter. Additionally, cold-rolling improves the steel's strength and hardness, making it more appropriate for high-stress uses. However, cold-rolled steel sheets are typically more costly due to the additional processing involved. In summary, hot-rolled steel sheets offer greater formability and lower cost, but have a rougher surface finish and may exhibit scale. On the other hand, cold-rolled steel sheets have superior surface finish, dimensional accuracy, and strength, but are pricier. Choosing between hot-rolled and cold-rolled steel sheets depends on the specific requirements of the application, including desired surface finish, strength, and cost considerations.

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