Hot-dip Zinc Coating Steel Building Roof Walls

Hot-dip Zinc Coating Steel Building Roof Walls System 1

Hot-dip Zinc Coating Steel Building Roof Walls System 2

Hot-dip Zinc Coating Steel Building Roof Walls System 3

Hot-dip Zinc Coating Steel Building Roof Walls

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 25 m.t.

Supply Capability:: 1212123 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 Walls

2.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: I noticed a friend's appliances are not magnetic, and mine are. Both are stainless steel. Are there two types of stainless steel or something? Thanks: There are many types of stainless steel. Some are magnetic and some are non-magnetic. The magnetic properties of stainless steel are very dependent on the elements added into the alloy, and specifically the addition of nickel can change the structure from magnetic to non-magnetic. Poor heat treatment or high heat input welding of normal or high carbon austenitic stainless steels will cause sensitization, ie formation of chromium carbides. The formation of carbides not only reduces the corrosion resistance of the stainless steel but also tends to form martensite around the carbide. This martensite is magnetic and the more severe the sensitisation, the stronger are the magnetic properties. When nickel is added, for instance, the austenite structure of iron is stabilized. This crystal structure makes such steels non-magnetic and less brittle at low temperatures. Martensitic stainless steels are magnetic. *Wrought, austenitic stainless steels, such as 304 and 316, are generally regarded as non-magnetic in the annealed condition, ie they are not attracted significantly by a magnet. However, if they are cold worked they will be attracted to a permanent magnet. The change occurs because the cold work deformation induces a transformation of the microstructure from austenite to martensite. The effect is less marked in alloys with high concentrations of austenite stabilisers such as nickel, nitrogen and carbon. Once the martensite is formed, it may also become magnetised. *In contrast to the austenitic alloys, ferritic stainless steels such as 409 or 3Cr12/5Cr12 and martensitic stainless steels such as 420, are strongly attracted to a magnet even in the annealed state. The duplex and super-duplex stainless steels will also be strongly attracted because they contain about 50% ferrite in their microstructure. *

Q: Can steel coils be welded together?: Yes, steel coils can be welded together. Welding is a common technique used to join metals, including steel coils. It involves melting the edges of the coils and fusing them together using a filler material. This process creates a strong and durable bond between the coils, allowing them to be joined and used as a single unit. Welding steel coils together is commonly done in various industries, such as manufacturing, construction, and automotive, to create larger structures or components. However, it is important to ensure proper welding techniques and quality control measures are followed to ensure the integrity and strength of the weld joint.

Q: Nickel is ferro magnetic in nature. But when it is added with stainless steel, it makes stainless steel non-magnetic. What is the structural changes happened with the presence of nickel?: All stainless steel is non magnetic.

Q: What are the common methods of testing the durability of steel coils?: Steel coils undergo various testing methods to assess their durability, strength, and resistance to different stresses and conditions. Some commonly used techniques include: 1. Tensile testing: This method measures the maximum stress a coil can bear before breaking or deforming by subjecting it to tension. It provides valuable insights into the strength and ductility of steel coils. 2. Bend testing: This method evaluates the flexibility and resistance to deformation of steel coils by bending them to a specific angle and checking for cracks or fractures. It is essential for assessing coil durability in industries like construction or automotive. 3. Impact testing: This method determines the ability of steel coils to withstand sudden shocks or impacts. It involves striking the coil with a heavy object and measuring energy absorption or deformation. Impact testing helps identify coil toughness and resistance to sudden loading conditions. 4. Corrosion testing: Steel coils often face corrosive environments like moisture or chemicals. Corrosion testing examines the resistance of steel to degradation caused by these agents. Salt spray or electrochemical testing simulates and evaluates coil durability in corrosive conditions. 5. Fatigue testing: This method assesses the ability of steel coils to endure repeated loading and unloading cycles. It subjects the coil to cyclic stresses until failure. Fatigue testing is crucial in machinery or infrastructure applications where coils experience repetitive loading. 6. Hardness testing: This method gauges the resistance of steel coils to indentation or scratching, providing information about their strength and wear resistance. Common hardness tests include Brinell, Rockwell, and Vickers methods. 7. Non-destructive testing: In addition to the destructive methods mentioned above, non-destructive techniques like ultrasonic testing, magnetic particle inspection, or X-ray testing are used to detect internal defects or flaws without damaging the coil. By utilizing these testing methods, manufacturers and industries can ensure that steel coils meet the required durability standards and perform reliably in their intended applications.

Q: looking to buy a sashimi knife. what is the difference between white steel (1and2) and blue steel (1and2) in terms on characteristics. what gets sharper? what holds edge longer? basically any info on the pros and cons of each steel would be SO GREATLY APPRECIATED! thanks in advance to all who answer. i'm leaning towards white-2 steel for my first sashimi knife, started training on the sushi bar and need a new tool!: Actually okorder /

Q: How do steel coil manufacturers ensure employee safety?: Steel coil manufacturers ensure employee safety through a combination of measures and protocols aimed at preventing accidents, promoting awareness, and providing appropriate training and protective equipment. Firstly, manufacturers conduct regular safety audits to identify and rectify potential hazards in the workplace. This includes inspecting machinery, equipment, and facilities to ensure they meet safety standards and are properly maintained. To promote a culture of safety, manufacturers implement comprehensive safety training programs for all employees. These programs cover topics such as proper handling of equipment, safe material handling practices, and emergency procedures. Additionally, manufacturers provide ongoing training to employees to ensure they are up to date with the latest safety protocols and best practices. Personal protective equipment (PPE) is an essential component of employee safety in steel coil manufacturing. Manufacturers ensure that employees are provided with and trained on the proper use of PPE, including safety glasses, gloves, helmets, and protective clothing. Regular checks are conducted to ensure that PPE is in good condition and replaced as necessary. Manufacturers also implement engineering controls to minimize risks in the workplace. This may include installing safety guards on machinery, implementing automated systems to reduce manual handling, and using advanced technology to monitor and control potential hazards. Regular maintenance and inspections are conducted to ensure that these controls are functioning effectively. Furthermore, manufacturers maintain a strong emphasis on communication and employee involvement in safety programs. This includes encouraging employees to report hazards or near-miss incidents, conducting safety meetings and toolbox talks, and actively involving employees in safety committees or teams. Manufacturers also foster a supportive environment where employees feel comfortable reporting safety concerns or suggesting improvements. Overall, steel coil manufacturers prioritize employee safety through a combination of measures, including regular safety audits, comprehensive training programs, provision of PPE, implementation of engineering controls, and fostering a culture of communication and employee involvement. These efforts contribute to creating a safe and secure working environment for all employees.

Q: What is the process of pickling and oiling steel coils?: To ensure the quality and protection of steel coils, a series of steps are undertaken in the process of pickling and oiling. The first step involves pickling, wherein impurities and scale are removed from the surface of the steel coil. This is achieved by immersing the coil in an acid bath, such as hydrochloric acid or sulfuric acid, which effectively dissolves any oxides, rust, or contaminants present on the surface. This step is critical as it readies the steel for further processing and safeguards against potential defects or corrosion. Following pickling, the steel coils are rinsed with water to eliminate any residual acid and then dried. Once they are clean and dry, a layer of oil is applied to provide temporary corrosion protection and lubrication during subsequent handling and transport. The oil coating acts as a barrier, preventing rusting or oxidation before the steel undergoes further processing or is utilized in various applications. The oiling process can be executed through various methods. One common approach is to apply the oil using a roller or brush, ensuring an even coating across the entire surface of the coil. Alternatively, the coils can be passed through a bath or spray chamber where the oil is administered. The choice of oil depends on the specific requirements of the steel and its intended use, with options ranging from mineral oil and synthetic oils to specialized rust-preventive coatings. Once the oiling process is complete, the steel coils are typically stacked, wrapped, or packaged for storage or transportation. It is crucial to handle the coils with care to avoid damaging the oil coating and compromising the corrosion protection it provides. Overall, the pickling and oiling of steel coils are indispensable steps in the steel manufacturing process. They ensure the quality, cleanliness, and protection of the steel, thereby prolonging its lifespan and enhancing its performance in various applications.

Q: How are steel coils processed for edge trimming or conditioning?: Steel coils are processed for edge trimming or conditioning through a series of steps. First, the coils are unwound and fed into a machine that trims the edges to remove any irregularities or imperfections. This process ensures that the edges are smooth and straight. After trimming, the coils may undergo further conditioning, which involves heat treatment or surface coating to enhance their properties and durability. Overall, these processes are essential for producing high-quality steel coils that meet the desired specifications and standards.

Q: What are the common coil weight and width combinations available for steel coils?: The common coil weight and width combinations available for steel coils vary depending on the specific requirements of the industry or application. However, some commonly available coil weight and width combinations for steel coils include: 1. Light gauge coils: These coils typically have a weight range of 5 to 10 tons and a width range of 600 to 1,500 mm. They are commonly used in industries such as automotive, construction, and appliances. 2. Medium gauge coils: These coils generally have a weight range of 10 to 20 tons and a width range of 750 to 2,000 mm. They find applications in sectors like manufacturing, infrastructure, and engineering. 3. Heavy gauge coils: These coils typically have a weight range of 20 to 35 tons and a width range of 900 to 2,200 mm. They are commonly used in industries that require thicker and wider steel sheets, such as shipbuilding, oil and gas, and construction of large structures. 4. Narrow coils: These coils have a width range of less than 600 mm and can have varying weights depending on the specific requirements. They are often used in industries that require narrower strips of steel, such as automotive components, electrical appliances, and packaging. 5. Custom coil sizes: Apart from the above standard coil weight and width combinations, manufacturers can also provide custom sizes based on specific customer requirements. This allows for flexibility in meeting the unique needs of different industries. It is important to note that these weight and width combinations are not exhaustive and can vary depending on the steel manufacturer, production capabilities, and customer demands.

Q: What are the different steel coil packaging methods?: Some of the different steel coil packaging methods include wrapping the coil with plastic or paper, using steel strapping or banding to secure the coil, placing it in a wooden crate or box, or using steel or plastic sleeves to protect the edges of the coil.

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