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Ready to ShipGalvalume steel is coated with a combination of zinc and aluminum, offering exceptional resistance to corrosion. Jiangsu galvalume steel coil suppliers provide the following types in bulk:
Galvalume Steel Coil with AZ150 Coating
A steel coil with an AZ150 coating means it has been covered with 150 grams per square meter of aluminum-zinc alloy. This coating protects the steel from rust and keeps it strong for a long time. It works especially well for buildings and roofs exposed to harsh weather, as the extra zinc forms a barrier that helps the steel last up to twice as long as regular galvanized steel.
Galvalume Steel Coil with AZ70 Coating
The AZ70 coating features an even layer of 70 grams per square meter of the aluminum-zinc mixture. People prefer this option for tasks that do not involve heavy exposure to moisture or corrosive substances. It gives enough protection to keep the steel coil from wearing down quickly. This coating is often used in home construction, where the materials must fight off damage from rain or humidity but are not constantly soaked.
Galvalume Steel Coil with AZ50 Coating
This steel is coated with 50 grams per square meter of the aluminum-zinc blend. It is a cost-effective choice for surfaces that occasionally face dampness but do not regularly encounter harsh elements. This could include inner walls or parts of buildings sheltered from direct weather. The AZ50 layer prevents rust without adding excessive weight or expense to the project.
Galvalume Steel Coil with AZ200 Coating
Containing 200 grams per square meter of the protective coating, this variety ensures maximum defense against rust. It is ideal for industrial applications, such as materials in chemical plants or near coastal regions with salt exposure. The thicker coating gives unmatched longevity, allowing the steel to maintain its strength even in the most corrosive environments.
Galvalume steel has a long life due to the unique coating of zinc and aluminum. Jiangsu galvalume steel coil wholesale distributors use it in various industries.
Agriculture
Farm buildings like barns and storage sheds use galvalume steel for roofing and siding because it lasts a long time. It protects equipment and supplies from rain, snow, and wind. The steel also works well for silos that store grain. Galvalume keeps the steel from rusting, so it is good for outdoor silos. The coatings also protect the steel from salt in animal feed.
Automotive Industry
Manufacturers use galvalume steel to make car parts that must resist corrosion. For instance, hoods and roofs need the steel to shield against moisture. Galvalume is lighter than other materials, which helps improve fuel efficiency.
Energy Sector
Galvalume steel coils make wind turbine blades. The corrosion resistance helps the blades last longer in harsh weather. It is also used for metal cladding around oil refineries to protect them from rust. The lightweight nature of galvalume makes it practical for transporting and installing turbine components.
Electrical Applications
Galvalume steel is used for making electrical enclosures that may be exposed to wet conditions. It helps shield the electronics from moisture without heavy rusting. Communication towers also benefit from the galvalume coating by maintaining structural integrity in outdoor environments for extended periods.
Construction Industry
The construction sector widely uses galvalume steel for roofing materials in residential and commercial buildings. Since the steel coils can resist both alkaline and acidic corrosion, it is great for coastal regions with high salt exposure. The long-lasting properties of galvalume make it a cost-effective solution. It requires less maintenance and will not need frequent repairs.
Home Appliances
Refrigerators and ovens use galvalume steel for the exterior shell. The coating ensures it will not rust even if it frequently comes into contact with moisture in kitchen and laundry room environments. Since galvalume is good at keeping its coatings intact, it helps appliances maintain a neat appearance for years.
Galvalume steel consists of a coating that combines zinc and aluminum. It gives the steel coil exceptional resistance to rust and corrosion for decades.
Technical Specifications
Galvalume steel coils come in various thicknesses or gauges to suit different applications. Common gauges range from 24 (0.022 inch) to 30 (0.012 inch) in US standard gauge and 0.5 mm to 0.8 mm in metric. The width of the coils typically falls between 600 mm and 1250 mm but can go as wide as 1500 mm for heavy-duty uses. The coils are manufactured from high-quality cold-rolled steel. The coatings usually contain 55% aluminum, 43.5% zinc, and 1.5% silicon. This mix forms a strong barrier over 1000 times more effective than rusting alone.
Unique Features
Galvalume steel provides improved corrosion protection over galvanized coatings. While zinc alone offers basic defense, the combination of zinc and aluminum in galvalume creates a resilient shield. The steel also has a long lifespan, lasting over 30 years in normal conditions and over 20 years near coastal areas with salt in the air. This reduces the need for frequent repairs.
Galvalume steel has a uniform and smooth surface that is excellent for painting and adhering materials. The steel can be metal-roller painted before installation to improve aesthetic appeal and provide additional protection. Since the aluminum in the coating allows for self-healing, tiny scratches or dents repairing themselves over time are virtually unheard of.
Key Quality Considerations
Ensuring a consistent and properly balanced coating of zinc and aluminum is crucial for galvalume's long-lasting benefits. Jiangsu galvalume steel coil manufacturers use a combination of both metals. It is a must that they contain at least 150 grams per square meter of each for the coil to last long. If the coating is too thin or uneven, rust will form. Too much of either metal will also cause issues. For instance, excess zinc will coat cracks. On the other hand, too much aluminum will leave the steel prone to rusting.
Using high-quality steel as the base material is essential. Cold-rolled steel provides a smooth, durable surface that the galvalume coating will bond well with. The coating must be applied in a controlled, industrial environment to get a uniform layer.
Manufacturers perform tests to check for corrosion resistance. They also examine how well paint or other materials adhere to the steel.
Safety Precautions
Galvalume steel coils may contain sharp edges, so wearing protective gloves and eye protection when handling them is good. It imperative to securely brace coil straps and always use proper lifting devices around the work area. Taking these precautions will greatly minimize potential injuries from fallout or falling sharp items.
Like any type of construction material, exposure to steel dust or fumes from welding galvalume can pose lung hazards. Working in poorly ventilated spaces with heavy galvalume debris can also be a fire risk. Fires are likely if the metal comes in contact with flammable liquids or grease. Taking sauna breaks directly after handling galvalume is dangerous. The steel's high heat retention may severely burn individuals in close contact.
Many governments do not classify galvalume as hazardous. Its primary metals pose serious health threats in their pure form. Following commonsense safety practices will ensure a safe working environment around galvalume-coated materials.
Coating Thickness
Manufacturers offer various coating thicknesses for different coating purposes. Projects near the coast or in highly corrosive areas require a thicker coating for enhanced longevity. Galvalume steel coils come with an aluminum to zinc ratio of at least 150 grams per square meter for each metal. They provide outstanding defense against rust and wear. Coating thickness directly impacts both the lifetime and resilience of the material. For indoors in controlled settings, coils with a thinner coating may suffice.
Material Quality
The core steel used in galvalume coils must be of premium grade. Manufacturers mostly use cold-rolled steel for its superior characteristics. This maintains the steel's strength and workability. Low-quality steel will not allow the galvalume coating to adhere properly. This will result in premature rusting.
Pre-Painted Options
Jiangsu galvalume steel coil suppliers go the extra mile by offering pre-painted galvalume. They do this before installation for added convenience. It also allows customers to select finishes that best match their design objectives. Pre-painted galvalume often provides additional protective qualities that enhance the steel further.
Paint Quality
For projects requiring pre-painted galvalume, the quality and type of paint used are critical factors. The paint must have strong adhesion not to chip, peel, or fade over time. It should also protect the steel from atmospheric elements.
Galvalume Properties
Aluminum in galvalume allows the steel to outlast its initial life by repairing minor scratches and marks. This creates a self-healing effect. This is a crucial quality to look out for if the project will be near saltwater or in highly acidic environments. The coastal or chemical exposure will likely create scratches in the steel. With the self-healing ability, the steel will last as long as its coating.
Adhesion
Good paint or other material adhesion is vital for long-term performance. The unique galvalume surface promotes superior bonding. Low-quality steel whose surface is too smooth will prevent other materials from adhering well.
Galvalume steel's coating, which combines zinc and aluminum, provides James Bond-level protection against rust. This advanced coating allows galvalume to outlast galvanized steel by up to 50%. The gentle, smooth surface of galvalume is also perfect for painting and bonding other materials. This makes it a great option for roofing, cladding, and various construction projects.
Galvalume steel roofs offer 30 or more years of protection in normal weather conditions. This time period reduces to around 20 years if the roof is in coastal areas with salty air. The duration might also depend on the quality of the coating and local environmental factors.
Yes! Pre-painted galvalume is available. It is essential to use a primer to help paint stick better to the coating. The paint must be high-quality and have strong adhesion for the galvalume to last. Proper surface preparation is crucial for the paint not to chip or peel over time. This provides a protective and aesthetic finish for the steel.
The steel must have proper surface preparation. High-quality paints with good adhesion will bond well to the galvalume coating. Maintenance will not be needed often. This makes it suitable for various applications indoors.
Galvalume steel is not as effective when it comes to scribing. It means when the steel gets scratched, there might be some rusting in those areas. Another limitation arises when the steel has excessive zinc in its coating. This will cause the steel to be prone to corrosion. Although extensively used, it may not be suitable for high-tech applications where precision is key.
