Hot-Dip Galvanized Steel Coil/Sheet in competitive Price and Best Quality

Hot-Dip Galvanized Steel Coil/Sheet in competitive Price and Best Quality System 1

Hot-Dip Galvanized Steel Coil/Sheet in competitive Price and Best Quality

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Loading Port:: Shanghai

Payment Terms:: TT OR LC

Min Order Qty:: 50 m.t.

Supply Capability:: 10000 m.t./month

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Hot-dip Zinc Coating Steel Building Roof Walls

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 Galvanized Steel Coil/Sheet in competitive Price and Best 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:

Hot-Dip Galvanized Steel Coil/Sheet in competitive Price and Best Quality

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: How are steel coils heat treated?: Steel coils are heat treated using a process called annealing. Annealing is a heat treatment technique in which the steel coils are heated to a specific temperature and then slowly cooled down. This process helps to relieve any internal stresses within the steel, improve its mechanical properties, and enhance its overall performance. The heating process involves raising the temperature of the steel coils to a critical point, typically between 800°C and 900°C, depending on the specific grade and desired outcome. The coils are then held at this temperature for a specific period of time, allowing for the transformation of the steel's microstructure. Once the desired time has elapsed, the heated steel coils are slowly cooled down in a controlled manner. This slow cooling process is vital as it allows the steel to undergo a gradual transformation, resulting in a more uniform and refined microstructure. This controlled cooling also helps to minimize the formation of internal stresses, which can potentially weaken the steel. The annealing process can be performed in different atmospheres, such as air, nitrogen, or hydrogen. The choice of atmosphere depends on the specific requirements and properties desired for the steel coils. For instance, annealing in a protective atmosphere like nitrogen or hydrogen can help prevent oxidation or decarburization of the steel surface. Overall, heat treating steel coils through annealing is a critical step in enhancing their mechanical properties, improving their formability, and achieving the desired characteristics for various industrial applications.

Q: What are the different types of welding methods used for steel coils?: There are several types of welding methods used for steel coils, including: 1. Shielded Metal Arc Welding (SMAW): Also known as stick welding, it uses a flux-coated electrode to create an arc between the electrode and the base metal, forming a weld. 2. Gas Metal Arc Welding (GMAW): Also called MIG welding, it uses a continuous wire electrode and a shielding gas, typically argon or a mixture, to create a weld. 3. Flux-Cored Arc Welding (FCAW): Similar to GMAW, but instead of a solid wire electrode, it uses a tubular electrode filled with flux, which provides additional shielding and can be used with or without a shielding gas. 4. Submerged Arc Welding (SAW): It involves a continuous wire electrode and a granular flux that is fed under a layer of flux, creating a submerged arc and a highly efficient weld. 5. Resistance Welding: It utilizes electricity to generate heat and pressure, joining the steel coils together. Types of resistance welding include spot welding, seam welding, and projection welding. Each welding method has its own advantages and limitations, and the choice depends on factors such as the specific requirements of the steel coils, the thickness of the material, and the production process.

Q: How are steel coils inspected for yield strength using tensile testing?: Tensile testing is the method used to inspect the yield strength of steel coils. This involves subjecting a sample of the coil to controlled tension until it reaches its breaking point. Through this test, various mechanical properties of the steel, including yield strength, can be determined. To conduct the tensile testing for yield strength inspection, a small strip of the coil is cut and prepared. The strip is then placed in a machine specifically designed for tensile testing. This machine consists of two grips that securely hold the strip at opposite ends. Subsequently, the machine applies a steadily increasing force to the strip, causing it to elongate until it eventually breaks. Throughout the test, the machine measures the force applied and the elongation of the strip. The yield strength is determined by identifying the point on the stress-strain curve where the material begins to undergo plastic deformation, meaning it exhibits permanent deformation without any increase in load. Typically, the yield strength is reported as the stress required to cause a specific amount of plastic deformation, such as 0.2% or 0.5%. This value represents the maximum stress that the steel can endure without experiencing permanent deformation. By performing tensile testing on a sample of the steel coil, it becomes possible to ascertain its yield strength. This information is vital in ensuring the quality and dependability of the steel coil, as it indicates the maximum stress it can tolerate before permanent deformation occurs. Furthermore, this testing method allows for the comprehensive evaluation of other mechanical properties, including ultimate tensile strength, elongation, and modulus of elasticity, thus providing a thorough understanding of the steel's performance characteristics.

Q: What are the dimensions of steel coils used in the construction equipment industry?: The dimensions of steel coils used in the construction equipment industry can vary depending on the specific application and requirements. However, there are common standard dimensions that are often used. Steel coils used in the construction equipment industry typically have a width ranging from 600mm to 2000mm. The thickness of these coils can range from 0.5mm to 25mm or even higher, depending on the intended use and structural requirements. The weight of steel coils used in construction equipment industry can vary significantly, ranging from a few hundred kilograms to several tonnes. The weight is typically determined by the dimensions and thickness of the coil, as well as the specific grade and type of steel being used. It is important to note that these dimensions are not fixed and can be customized based on the specific needs of the construction equipment industry. Manufacturers and suppliers can provide steel coils in various dimensions to meet the specific requirements of construction equipment manufacturers and contractors.

Q: How are steel coils used in the petrochemical industry?: Steel coils are commonly used in the petrochemical industry for various applications such as manufacturing pipes, tanks, and pressure vessels. They serve as raw materials for fabricating these essential components used in the transportation, storage, and processing of petrochemical products. The strength and durability of steel make it an ideal material for withstanding harsh environments and high-pressure conditions, ensuring the safety and efficiency of petrochemical operations.

Q: How are steel coils inspected for surface cleanliness using cleanliness tests?: Steel coils are inspected for surface cleanliness using cleanliness tests to ensure that they meet the required quality standards. These tests involve various methods to assess the presence of contaminants, such as dirt, oil, grease, rust, or scale, on the surface of the steel coils. One commonly used cleanliness test is the visual inspection, where trained inspectors visually examine the surface of the coils for any visible contaminants. They look for any signs of staining, discoloration, or foreign substances that may affect the quality of the steel. Another cleanliness test is the wipe test, where a clean cloth or wipe is used to wipe the surface of the steel coil. This cloth is then analyzed for the presence of contaminants using techniques like gravimetric analysis or solvent extraction. The amount of contaminants collected on the cloth can be measured, providing an indication of the cleanliness of the steel surface. Surface roughness tests are also performed to assess cleanliness. A roughness gauge is used to measure the roughness of the steel surface, which can indirectly indicate the presence of contaminants. If the surface roughness measurements are higher than the specified limits, it suggests the presence of contaminants affecting the cleanliness of the steel. In addition to these tests, cleanliness tests may also involve techniques like wetting tension measurement, water break test, or contact angle measurements. These tests evaluate the surface energy and wetting properties of the steel, which can be affected by the presence of contaminants. By conducting cleanliness tests, steel coils can be thoroughly inspected for surface cleanliness. These tests help in identifying any potential contaminants that may compromise the quality and performance of the steel. By ensuring the surface cleanliness of steel coils, manufacturers can provide high-quality products that meet the stringent requirements of various industries.

Q: i have recently gotten into DIY and am planning on making my own knife. My question is what kind of steel would be good to use for heat treating if i plan on using water and not oil in the process.: Go to junkyard get old leaf spring, cut out knife, start sharpening. Why waste time heat treating steel when the spring steel as already be done.

Q: How do steel coil manufacturers ensure product quality?: Steel coil manufacturers ensure product quality through several methods: 1. Quality Control: They implement rigorous quality control measures at every stage of the production process, from sourcing raw materials to final inspection. This includes regular testing, sampling, and monitoring to ensure the coils meet the required specifications and standards. 2. Advanced Technology: Manufacturers utilize cutting-edge technology and modern equipment for the production of steel coils. This helps in maintaining consistency, precision, and accuracy in the manufacturing process, leading to high-quality products. 3. Skilled Workforce: Trained and skilled professionals oversee the entire manufacturing process, ensuring that each step is executed with precision. They are responsible for monitoring, analyzing, and addressing any potential quality issues, thereby upholding the product's quality standards. 4. Compliance with Standards: Steel coil manufacturers follow industry-specific quality standards and regulations. They ensure that their manufacturing processes comply with internationally recognized standards, such as ISO 9001, to guarantee the quality and reliability of their products. 5. Regular Inspections: Manufacturers conduct regular inspections and audits to assess the quality of their steel coils. This includes both in-house inspections and third-party inspections to ensure an unbiased evaluation of the product's quality. By implementing these measures, steel coil manufacturers consistently deliver high-quality products that meet customer requirements and industry standards.

Q: I'm putting a bathroom in my basement. I'm an Ironworker btw. I wanted to go with steel studs due to the fact that they are light, and I won't have a big mess. I live in the Chicago area and they should be easy to find. Here is my question. Are they not being used anymore? I ordered 100 studs from Lowe's but they didn't have track. The delivery guy was a retired Carpenter and he told me that I got all the studs they had, they no longer stock steel studs, and they don't have track. Am I missing something? Menards didn't have track either.: Steel studs are mainly for commercial applications on non bearing walls. 100 studs, must be one big assed bathroom. Do yourself a favor and install a pressure treated bottom plate, even if you use steel studs.