Hot dip galvanized steel coils Z40-Z600 System 1

Hot dip galvanized steel coils Z40-Z600

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Loading Port:: Shanghai

Payment Terms:: TT OR LC

Min Order Qty:: 25 m.t.

Supply Capability:: 100000 m.t./month

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Packaging & Delivery

Packaging Detail:	Seaworthy Packing
Delivery Detail:	25days

Specifications

Galvalume steel coils
Min Yield Strength of 550MPA
Min/Regular Spangle
Zinc coating:60-600g/m2

Hot Dipped 55% Aluminum Zinc Alloy Coated Steel by the Hot-Dip Process

Hot Dip Galvalume steel coil EN 10327 JIS G3321, ASTM A792M 55% AL-ZN coated

Description:

The hot dip galvalume steel is a kind of coated steel. With the cold rolled steel of different strength and thickness as substrate, it is produced through applying Al-Zn coat on both faces by hot dip process. In its coating, Al accounts for about 55%, Si 1.6%, while the remaining is Zn. It enjoys both the physical protective feature and durability of Al and the electrochemical protective property of Zn. And its surface has bright silver color and regular embossed-like figure, which are highly decorative.

Comparison

Item	GI	GF(Zn-5%Al)	GALVA-LUME(55%Al-45%Zn)	Al
Service Life	Fair	Fair	Good	Good
Electrochemical Protection	Good	Good	Good	N/A
Welding Performance	Good	Fair	Poor	Poor
Application with Wet Concrete	Good	Poor	Very Poor	Very Poor
Thermal Resistance	Poor	Poor	Good	Excellent

Specifications:

Standard	EN 10327	DX51D+AZ, DX52D+AZ, DX53D+AZ,
	EN 10326	SS250GD+AZ, SS350GD+AZ
	JIS G3321	SGLCC, SGLCD, SGLCDD, SGLC 400
	ASTM A792M	CS type C, CS type B, DS, SS255, SS345
Base Metal	Cold rolled steel coils SPCC, SPCD, SPCE, DC01, DC03, DC04, CS, DS, DDS, Q195, Q250, Q350
Thickness	0.22mm-2.0mm
Width	700mm-1300mm
Coil ID	508mm, 610mm
Zinc coating	60g/m2-180g/m2
Surface treating	chromium free passivation, chromium passivation, fingerprint resistant, oiled
Spangle types	regular spangle

Applications:

Architecture	Roofs and outside walls of civilian and industrial buildings, garage doors, fencings and window blinds
Appliances Industry	Outer clad sheets for washing machine, refrigerator, television, air conditioner and ventilation system, explosion-proof strip, solar water heater and appliance parts
Auto Industry	Muffler, heat shields of exhaust pipe and catalytic converter, auto parts & accessories under the frame, signboard in highway.
Industrial Instruments	Electric control cabinet, industrial refrigeration equipment, automatic vending machine

Q: What is the average surface finish tolerance for steel coils?: The average surface finish tolerance for steel coils typically ranges from 0.5 to 1.5 micrometers.

Q: What are the different types of steel coil coatings for heat resistance?: There are several different types of steel coil coatings that provide heat resistance, including silicone-modified polyester (SMP), polyvinylidene fluoride (PVDF), and high-temperature silicone.

Q: How do steel coils contribute to the energy efficiency of buildings?: Steel coils contribute to the energy efficiency of buildings in several ways. Firstly, steel coils are often used in the construction of roofs and walls, providing a durable and well-insulated structure that helps to minimize heat transfer and reduce energy loss. Additionally, steel coils can be coated with reflective materials, such as cool roof coatings, which help to reflect the sun's heat and reduce the cooling load on the building. Lastly, steel coils are also commonly used in the manufacturing of HVAC systems, ensuring efficient heating and cooling operations, further enhancing the energy efficiency of buildings.

Q: Can steel coils be returned if they are damaged?: Yes, steel coils can be returned if they are damaged. Most suppliers and manufacturers have return policies in place for damaged goods, including steel coils. It is important to contact the supplier or manufacturer promptly and provide documentation or evidence of the damage to initiate the return process.

Q: What are the different types of coatings applied to steel coils?: Steel coils can be coated with a variety of coatings, each serving a specific purpose and offering unique advantages. 1. Galvanized Coating: Among the most frequently used coatings for steel coils is the galvanized coating, which entails the application of a layer of zinc to the steel surface. Galvanized coatings offer exceptional corrosion resistance, making them ideal for outdoor applications where the steel may come into contact with moisture or harsh environmental conditions. 2. Galvalume Coating: Similar to galvanized coating, galvalume coating also involves the application of a zinc layer to the steel surface. However, it incorporates a small amount of aluminum as well. This addition enhances the coating's corrosion resistance and improves heat reflectivity. Galvalume coatings are commonly employed in roofing and cladding applications. 3. Pre-painted Coating: Pre-painted coatings encompass the application of a layer of paint or primer to the steel surface. This type of coating allows for customization in terms of color and finish. Pre-painted coatings not only enhance the steel's aesthetic appeal but also provide added protection against corrosion and weathering. 4. Organic Coating: Organic coatings are typically applied as a topcoat over galvanized or galvalume coatings. They are composed of various resins, such as polyester, epoxy, or polyurethane, which offer additional protection against corrosion, abrasion, and chemicals. Organic coatings are frequently utilized in industries that prioritize both durability and aesthetics, such as the automotive sector. 5. Metallic Coating: Metallic coatings, such as aluminum or zinc, are applied to steel coils using the hot-dip coating process. These coatings deliver exceptional corrosion resistance and are commonly used in applications where the steel is exposed to high temperatures or corrosive environments. 6. Chromate Conversion Coating: Chromate conversion coatings are primarily applied to steel coils for their corrosion resistance properties. They are frequently employed in electrical applications to safeguard against galvanic corrosion and enhance conductivity. Ultimately, the choice of coating for steel coils is contingent upon specific application requirements, including the desired level of corrosion resistance, aesthetic considerations, and environmental factors.

Q: Why is steel a stiff material?I'm doing a project on the use of steel in the construction of skyscrapers - and obviously, for the inner steel skeleton of a skyscraper the steel support beams and girders will have to be stiff so that they don't fall apart or the building doesn't shake due to wind or other natural forces.But in my research I've found that steel (mild steel to be more exact) is ductile and malleable, meaning it can be shaped fairly easily. However, how can steel ALSO be stiff - the definition of stiffness is the tendency to withstand bending and stretching - so my question is. How can this material be BOTH ductile/malleable, AND stiff? and why? :)Thank you in advance if anyone takes the time to answer this, would be appreciated - I'll give you 10 points straight away if the answers conclusive: Steel is NOT stiff. In fact it is worldly accepted metals (steel is a metal) are not rigid in mechanical terms, and rigid means stiff. Steel easy to shape, but is strong and therefore hard to break. Thermosetting polymers (hard plastic) which is stiff, is in fact easy to break (weak) and also hard to reshape without changing its state (solid to liquid). Whoever told you steel is stiff is wrong and possible meant steel is strong, or you misheard/misunderstood.

Q: How are steel coils processed and shaped into different products?: Different products are manufactured from steel coils through a series of manufacturing processes. The initial step is referred to as uncoiling, which entails the unwinding and straightening of the steel coil. Typically, this is achieved by feeding the coil through a machine called a decoiler. Once the coil is uncoiled, it proceeds to the leveling process. The objective of this step is to eliminate any unevenness or warping in the steel. The coil is passed through a set of rollers that exert pressure and flatten the steel to achieve the desired thickness. This ensures that the steel is uniform and prepared for further processing. Following the leveling process, the steel is usually cut into smaller pieces or sheets. Machines such as shears or slitters are employed for this purpose, enabling the steel to be cut into various widths or lengths. The specific dimensions depend on the requirements of the particular product being manufactured. After the steel is cut, it can undergo additional shaping processes. One commonly used method is roll forming, in which the steel is gradually shaped into the desired profile by passing it through a series of rollers. This technique is frequently utilized in the production of roofing sheets, wall panels, or beams. Another widely used shaping process is stamping. In stamping, the steel is pressed between a die and a punch to create intricate shapes or patterns. This method is commonly employed in the automotive industry for the production of components such as car body panels or engine parts. In addition to shaping, the steel may also undergo surface treatments or coatings to enhance its properties or improve its appearance. This can involve processes like galvanizing, where a layer of zinc is applied to safeguard the steel against corrosion, or painting to provide a decorative finish. In conclusion, the process of shaping steel coils into different products encompasses a combination of cutting, shaping, and surface treatments. These processes are meticulously executed to ensure that the steel meets the required specifications and is suitable for use in various industries.

Q: How are steel coils used in the manufacturing of railway tracks?: Steel coils are used in the manufacturing of railway tracks as they are processed into long, continuous lengths of steel rails. These coils are first uncoiled and then passed through a series of machines that shape, cut, and weld them together to form the required lengths and profiles of railway tracks.

Q: iam talking abt carbon steel of composition:-C=0.15wt% Mn=0.60wt% P=0.035wt% S=0.04wt% Cu=0.20 (min)wt%....: The composition you mention is not a low carbon steel.The carbon and manganese content are high enough to mean that the crystal grain size will be small. A very large grain size is needed in steels for transformers,motors etc.The large grain size and lack of carbides in low silicon steels for magnetic purposes allows the easy movement of magnetic domain walls.Transformer steels typically have a carbon content of about 0.003% and 3.5%Si with the phosphorus and sulphur at a tenth of the levels you mention.The high Si content increases the electrical resistivity of the magnetic core and reduces the power loss from eddy currents(the core metal has voltages generated in it by the changing magnetic fields) and the power lost in eddy currents heats up a transformers core so it needs extra cooling;the loss is inversely proportional to the resistivity and 3.5%Si increases resistivity of iron by a very large amount.The presence of high silicon with ultra low carbon and manganese level allows the soft magnetic steels to be annealed at very high temperatures(850 to 1100deg C)without a phase change so that the crystals have 10,000 to 10,000,000 times the volume of the crystals in heat-treatable (Just)steel you mention.Fine for playing with and demonstrating electromagnetism but not as electrical engineering feedstuff.

Q: What are the different methods of coil handling and storage?: Various industries commonly employ several different methods for coil handling and storage to ensure safety, efficiency, and preservation. Some of these methods include: 1. Coil cradles: Popular for handling and storing coils, coil cradles feature a U-shaped structure that provides stability and support. The cradle is positioned beneath the coil and can be easily maneuvered using forklifts or overhead cranes. 2. Coil cars: Used for transporting coils within a facility or between locations, coil cars are equipped with specialized clamps or arms to securely hold the coil during transit. Manual or automatic operation is determined by coil size and weight. 3. Coil racks: Specifically designed storage systems for organized coil storage, coil racks are typically constructed from steel and feature multiple levels or compartments to accommodate various coil sizes and types. Forklifts or overhead cranes are used to access coil racks. 4. Coil turnstiles: In processing lines where continuous coil feeding into machines is required, coil turnstiles are employed. These rotating devices enable easy loading and unloading of coils by rotating them to the desired position, facilitating handling and processing. 5. Coil pallets: Specially designed pallets made of steel or wood, coil pallets are utilized for both storage and transportation of coils. Their unique configuration allows for convenient loading and unloading using forklifts or pallet jacks. Coil pallets are often utilized for long-distance transportation or warehouse storage. 6. Coil storage racks: Large storage systems designed for bulk coil storage, coil storage racks are typically made of steel and feature multiple levels or compartments to accommodate a significant number of coils. Forklifts or overhead cranes are utilized for accessing coil storage racks. These examples represent only a selection of the numerous coil handling and storage methods commonly employed across various industries. The specific method chosen depends on factors such as coil size and weight, available space, and industry-specific requirements.

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