Chinese Hot-dip Zinc Coating Steel Building Roof Walls
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 56 m.t.
- Supply Capability:
- 22222 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
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 types of protective coatings for steel strips?
- There are several different types of protective coatings for steel strips, including zinc coatings, aluminum coatings, organic coatings, and ceramic coatings. These coatings provide varying levels of corrosion resistance and durability, and are often chosen based on the specific application and environmental conditions.
- Q: What are the different finishes available for steel strips?
- There are several different finishes available for steel strips, including hot-rolled, cold-rolled, coated, galvanized, and stainless steel finishes.
- Q: What are the cutting options available for steel strips?
- There are several cutting options available for steel strips, depending on the specific requirements and desired outcome. 1. Shearing: Shearing is a common method used to cut steel strips. It involves using a shearing machine with two blades to slice through the material. This method is ideal for straight cuts and can be used for both thin and thick steel strips. 2. Laser cutting: Laser cutting is a precise and efficient cutting method that uses a laser beam to melt and vaporize the steel strip. This technique is perfect for intricate and complex designs, as it provides high accuracy and a clean cut. However, it may not be suitable for very thick steel strips. 3. Waterjet cutting: Waterjet cutting utilizes a high-pressure stream of water mixed with an abrasive material to cut through the steel strip. This method is versatile and can handle various thicknesses of steel. It is also ideal for cutting heat-sensitive materials or those with a high melting point. 4. Plasma cutting: Plasma cutting involves ionizing gas and an electric arc to cut through the steel strip. This process is effective for both ferrous and non-ferrous metals and can handle different thicknesses. Plasma cutting is known for its speed and ability to cut through thicker materials. 5. Saw cutting: Saw cutting uses a circular saw blade or bandsaw to cut through the steel strip. It is suitable for straight cuts and is commonly used for thicker steel strips or when precise shapes are not required. When choosing a cutting method for steel strips, it is important to consider factors such as the desired precision, speed, complexity of the design, and the thickness of the material. Each cutting option has its advantages and limitations, so it is crucial to select the most appropriate method based on the specific needs of the project.
- Q: What are the typical tolerances for steel strips?
- The typical tolerances for steel strips vary depending on the specific requirements and industry standards. However, common tolerances for steel strips can range from +/- 0.001 inches to +/- 0.030 inches, depending on factors such as strip thickness, width, and the intended application. It is essential to refer to industry-specific standards or consult with manufacturers for precise tolerances.
- Q: How are steel strips tested for corrosion resistance?
- Steel strips are tested for corrosion resistance through a variety of methods to ensure their durability and longevity. One commonly used method is the salt spray test, also known as the ASTM B117 test. In this test, the steel strips are exposed to a highly corrosive salt spray environment for a specified period of time. This simulates the effects of corrosion that the steel strips may encounter in real-world conditions. Another method used for corrosion resistance testing is the electrochemical test. This involves immersing the steel strips in a corrosive solution and applying a small electrical current. The resulting measurements of corrosion potential and current flow provide valuable information about the material's resistance to corrosion. Additionally, some laboratories perform accelerated corrosion tests using specialized equipment. These tests subject the steel strips to extreme conditions, such as high humidity or temperature fluctuations, to accelerate the corrosion process. This allows researchers to evaluate the material's performance in a shorter time frame. Furthermore, visual inspection and microscopic examination can be conducted to assess the extent of corrosion or any signs of corrosion initiation on the steel strips. This can help identify areas of weakness and guide improvements in the material's composition or production processes. Overall, a combination of salt spray testing, electrochemical testing, accelerated corrosion tests, and visual examination are employed to comprehensively evaluate the corrosion resistance of steel strips. By conducting these tests, manufacturers can ensure that their steel strips meet the required standards and are capable of withstanding corrosive environments, thus ensuring their long-term reliability and performance.
- Q: What are the different methods for embossing steel strips?
- There exists a variety of techniques for embossing steel strips, each possessing its own merits and applications. 1. Roll embossing remains the most prevalent method, involving the passage of the steel strip through a series of rolls with engraved patterns. The rolls exert pressure on the strip, resulting in the desired embossed design. Industries such as automotive, construction, and decorative applications widely employ roll embossing. 2. Heat embossing entails heating the steel strip before pressing it onto a patterned die. The heat softens the metal, enabling it to conform to the shape of the die. Heat embossing is particularly advantageous for intricate or elaborate designs that prove challenging to achieve through roll embossing. 3. Laser embossing represents a non-contact approach, utilizing a laser beam to create the embossed pattern on the steel strip. The laser selectively removes material from the surface, generating the desired design. Laser embossing offers remarkable precision and flexibility, rendering it suitable for complex and customized patterns. 4. Press embossing, also referred to as stamping, necessitates the use of a hydraulic or mechanical press to exert force on the steel strip against a die. The die possesses the desired engraved pattern, and the pressure from the press transfers the pattern onto the strip. Press embossing finds common usage in large-scale production and facilitates deep and uniform embossing. 5. Photochemical etching involves the application of a photoresist onto the steel strip, followed by exposure to ultraviolet light through a patterned mask. The exposed areas are chemically etched away, leaving behind the embossed design on the strip. Photochemical etching permits intricate patterns and is frequently employed for decorative or artistic purposes. Each method exhibits its own advantages and limitations, with the selection of a particular technique dependent on factors such as the desired design, production volume, precision requirements, and cost considerations.
- Q: How are steel strips coated with tin?
- Steel strips are coated with tin using a process called electroplating. In this process, the steel strips are immersed in an electrolyte solution containing tin salts. A direct current is then applied to the steel strips, causing the tin ions in the solution to be attracted to the steel surface. This forms a thin layer of tin on the steel, providing it with a protective coating.
- Q: How are steel strips inspected for surface defects?
- Steel strips are inspected for surface defects using various methods such as visual inspection, magnetic particle inspection, dye penetrant testing, and eddy current testing. These techniques help detect defects such as cracks, pits, scratches, and other irregularities on the surface of the steel strips.
- Q: How are steel strips heat treated?
- Annealing or tempering is the process by which steel strips undergo heat treatment, wherein the strips are subjected to controlled cycles of heating and cooling. The main objective of heat treating steel strips is to enhance their mechanical properties, including hardness, toughness, and ductility. During annealing, the steel strips are heated to a specific temperature, typically above their critical temperature, and then gradually cooled. This process alleviates internal stresses, refines the grain structure, and improves the overall machinability of the strips. It also enhances their ductility and toughness, making them more resistant to deformation and cracking. In contrast, tempering involves a similar heating process, but the steel strips are reheated to a lower temperature and then rapidly cooled. This step is performed to reduce the hardness and increase the toughness of the strips. By selecting the appropriate temperature and cooling rate, the desired combination of strength and toughness can be achieved. To ensure consistent and reliable heat treatment results, steel strips are often subjected to heat treatment in controlled atmospheres or furnaces, where the temperature and cooling rate can be precisely controlled. Other factors, such as the steel composition and desired end properties, also influence the specific heat treatment process. Overall, heat treating steel strips is a crucial step in their production process, as it allows for the optimization of their mechanical properties. This makes them suitable for various applications in industries like automotive, construction, and manufacturing.
- Q: How do steel strips compare to stainless steel strips?
- Steel strips and stainless steel strips differ primarily in terms of their composition and properties. Steel strips are typically made from carbon steel, which contains iron and carbon as the main elements. They offer good strength and durability, making them suitable for various industrial applications. On the other hand, stainless steel strips are made from an alloy of iron and chromium, with the addition of other elements like nickel and molybdenum. Stainless steel strips provide excellent corrosion resistance, high temperature resistance, and an attractive appearance, making them commonly used in applications where maintaining hygiene and preventing rust is crucial. Therefore, while steel strips offer strength, stainless steel strips excel in corrosion resistance and aesthetics.
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Chinese Hot-dip Zinc Coating Steel Building Roof Walls
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 56 m.t.
- Supply Capability:
- 22222 m.t./month
OKorder Service Pledge
OKorder Financial Service
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