Galvalume Steel
Langzo Steel is located in the Chinese steel base-Boxing city, Shandong Province, China which is a steel group company integrating steel industry and international trade, our subsidiaries are: Shandong Langzo New Materials Co., Ltd.; Vanten Metal Corporation Limited and Tangshan Jingjin ColdRolled Galvanizing Co.. Ltd.etc. Our main products are flat products of Galvanized Steel Coils, Galvalume Steel Coils, Color Coated Steel Coils, Corrugated Steel Roofing Sheet, Cold Rolled FullHard, Aluminum Color Coating Coils, Tinplate, TFS, etc and long products of Angles, channel, H beam, Wire rod, Rebar/ Deformed Bar, steel pipe, steel strips. etc.
Why Choose US
Our Factory
Tangshan Xunzhuo International Trade Co., Ltd. is a steel group company integrating the steel industry and international trade. We have 7 production lines, more than 500 employees, and a monthly production capacity of 100,000 tons, completing orders for customers efficiently and timely.
Production Market
With more than 10 years development, Xunzhuo has gained a very good reputation of our clients from Europe, Africa, Latin America, Southeast Asia and Middle East, etc.The personnel in each position of the company have more than many years of experience in foreign trade.
Quality Assurance
Professional technical quality inspection personnel conduct quality inspections on the products ordered by customers. From production, packaging to transportation, they carefully conduct quality tracking throughout the entire process to ensure that customers receive satisfactory products.
Excellent service
We have a professional service team and a complete sales process. We promise that from the client's order to the customer's receipt of the goods, the whole process will allow clients to be 100% at ease!
Types of Galvalume Steel
Galvalume Steel Coil
The aluminum-zinc alloy structure of the Galvalume steel Coil is composed of 55% aluminum, 43.4% zinc and 1.6% silicon solidified at a high temperature of 600 ° C.
Chromated Galvalume Steel Coil
Galvanized aluminum sheet (GF) is also called low-aluminum galvanized steel sheet. The coating contains 5% Al, 95% Zn, and traces of rare earth elements.
Galvalume Steel Sheet
The surface of the Galvalume steel Sheet is smooth, flat and gorgeous with star flowers, and the base color is silvery white.
Galvalume Corrugated Steel Sheet
The coating composition of Galvalume Corrugated Steel Sheet is composed of 55% aluminum, 43.4% zinc and 1.6% silicon respectively by weight.
Galvalume Steel Strip
Galvalume steel Strip is cold-rolled or hot-rolled, long and narrow long steel strips coated with a layer of raw materials called (zinc, aluminum) to varying degrees.
Colored Anti-finger Galvalume Steel Coil
According to the national standard, the minimum standard for the thickness of the aluminum-zinc coating of the Colored Anti-finger Galvalume steel Coil for color coating is 100 grams.
Advantages of Galvalume Steel
Superior corrosion resistance: Galvalume's resistance to corrosion is two to four times that of galvanized steel. This is due to the combination of the best qualities of zinc and aluminum, which offers double protection. When zinc fades, the aluminum will create a thick aluminum oxide layer, which will contain further corrosion of the base metal.
According to research, Galvalume metal roofing can stay up to 50 years and more without being corroded.
Aesthetically pleasing: Galvalume has a silver-white color with a smooth surface that gives it a visual appeal. Unlike galvanized steel, it has more uniform spangles. It is a significant reason why more people prefer to use it for their buildings.
Warranty on substrate: Galvalume's 25.5-year substrate warranty is a significant advantage. Some people refer to it as the perforation warranty. In addition to the warranty on the substrate, Galvalume systems usually have paint warranties, protecting your investment even more and extending its lifespan.
Heat resistance and reflectivity: This type of steel has good heat resistance and can endure temperatures as high as 315°C for a lengthy period without losing or changing its color. In addition, it has a heat reflectivity that is two times that of galvanized steel. These properties make it the ideal choice for roofing.
Good adhesion: Galvalume doesn't need weathering or pretreatment before you can paint it directly. Because of its good adhesion, you can paint it directly. It is commonly used for color-coated steel as the base metal.
Mechanical Properties
Yield Strength: 38 - 53 ksi
Tensile Strength: 50 - 65 ksi
Elongation: 20 - 36%
Hardness: 50 - 65 RB
ASTM Specifications
ASTM Designation A792 / 792M outlines the general requirements for 55% aluminum-zinc alloy-coated steel sheets in coils and cut lengths for applications requiring corrosion resistance or heat resistance or both. Included in this specification are steel chemistry requirements and typical mechanical properties of various metallurgical grades.
Coating Thickness
Coating thickness is measured as the coating weight in ounces per square foot. For example the coating designation AZ-55 specifies there is a minimum coating weight of .55 ounces per square foot (total both sides) is equivalent to 0.8 mil thickness per side.
Surface Treatment
The "chem.-treat dry" surface treatment consists of an application of a thin, invisible, corrosion inhibiting, inorganic chemical film on the surface. This film is applied at the galvanizing line by dipping into an aqueous solution of corrosion inhibiting chemicals.
Applications of Galvalume Steel
Automotive applications
The more expensive aluminum used in trailers, vans, and mobile houses are being replaced by galvalume steel sheets. Galvalume's unique properties make it suitable for various automotive applications such as vehicle bodies, automotive under-body parts, car wash components, oil filter tubes, license plate brackets, bus steps, hose clamps, and buses (seat backs, panels, floors), etc.
Roofing applications
Contemporary buildings are often built with roofs of varying shapes and pitches. They include steep and moderately steep roofs which require special structures. Galvalume steel is suitable in the majority of cases.
Walls and siding applications
Known for its ease in assembling and dismantling, it is widely used in farm, residential, pre-engineered, and storage buildings to act as the vertical component. Galvalume steel also provides a good acoustic rating and thermal insulation.
Heating & ventilation applications
Pre-painted galvalume coils are used for heating and ventilation applications. Galvalume can withstand temperatures up to 315 degrees Celsius and finds application in air conditioning equipment & HVAC ducts, solar heating panels, heat exchangers, and other industrial HVAC equipment.
Agricultural applications
Galvalume's longevity makes it adaptable for a variety of agricultural applications ranging from silos (for grain storage), bins (grain, fruit, vegetables, feed storage), curing & drying facilities, and greenhouse frames, to rainwater collection tanks.
General use in manufacturing repairs
One of the major applications of galvalume steel sheets includes the replacement of conventional galvanized and aluminum-coated sheets in automotive repairs, due to their high interchangeability.
The Production Process of Galvalume Steel
Galvalume (GL) steel manufacturing consists of multiple stages that transform raw materials into final products. Here's a summary of the normal fabrication process:
Material Preparation
The procedure begins with preparing the GL steel coils. The coils are inspected for surface faults such as scratches or dents, and then cleaned to eliminate any impurities or oils.
Cutting
The GL steel coils are then cut to the necessary dimensions or lengths using a variety of methods, including shearing, slitting, and laser cutting. This procedure guarantees that the coils are reduced to reasonable sizes for subsequent processing.
Forming and Bending
GL steel sheets or strips are fed through a variety of forming and bending machinery to shape them into the necessary profiles or components. Depending on the project's specifications, this may entail techniques such as roll forming, press braking, or stamping.
Joining and Welding
If necessary, GL steel components may be connected or welded together to form bigger structures or assemblies. Arc welding, spot welding, or laser welding can be used to securely combine the GL steel parts.
Surface Treatment
The GL steel components may be surface treated once they have been fabricated. This can include operations like painting, powder coating, or galvanizing to improve aesthetics or give increased corrosion resistance.
Quality Control
Quality control methods are applied throughout the fabrication process to guarantee that the GL steel components fulfill the necessary requirements and standards. This may include dimensional checks, visual inspections, mechanical testing, and other quality assurance methods.
FAQ
We're professional galvalume steel manufacturers and suppliers in China, specialized in providing high quality customized service. We warmly welcome you to wholesale high-grade galvalume steel in stock here from our factory. Contact us for quotation.
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