0.40mm Green AFP Galvalume Steel GL Stone Coated Tiles Villa Roof

55% Aluzinc Steel Roof Panels DX51D ASTM A792M S280GD​

• Introduction:

55% Aluzinc steel coils, also known as Galvalume or Aluminium-Zinc alloy coated steel, are a type of steel coated with an alloy comprising approximately 55% aluminum, 43.4% zinc, and 1.6% silicon. This unique coating provides a combination of the excellent corrosion resistance of aluminum and the galvanic protection of zinc, making it a superior material for various applications.

Composition:

- Aluminum (55%): Provides exceptional corrosion resistance by forming a protective layer of aluminum oxide.

- Zinc (43.4%): Offers sacrificial protection, similar to traditional galvanized steel, protecting the steel substrate by corroding preferentially.

- Silicon (1.6%): Enhances adhesion of the coating to the steel and helps maintain the integrity of the alloy layer during fabrication.

• Advantages of Galvalume Steel Compared to Galvanized Steel

When comparing lightweight steel keels, one must consider the differences in scratch resistance and durability between galvanized and aluminium-zinc plated steel.

Differences Between Galvanized and Aluminium-Zinc Plating:

Galvanized Steel:

- Coating and Usage: Galvanized light steel coatings vary based on their intended environment and required corrosion resistance. The zinc coating can range from 120g/m² to 275g/m².

- Designation: For example, Z275 refers to galvanized steel with a total zinc coating weight of 275g/m² on both sides.

- Physical Changes: Over time, galvanized steel exposed to the elements will react with oxygen, causing the surface to blacken.

Aluminium-Zinc Plated Steel (Galvalume):

- Corrosion Resistance: Aluminium-zinc plated steel offers superior corrosion resistance, three times that of pure galvanized steel. This is due to the formation of a dense aluminium oxide layer that prevents further corrosion.

- Aesthetics: It features attractive zinc flowers on the surface, making it suitable for use as building exterior panels.

- Designation: AZ150 is a common abbreviation for aluminium-zinc plated steel, indicating a specific coating weight.

- Durability: The aluminium component provides excellent protection against chemical corrosion and physical reactions, maintaining the keel's appearance and preventing rust over time.

- Field Testing: Aluminium-zinc plated steel has undergone over 20 years of outdoor exposure tests in various atmospheric conditions, proving its superior edge protection compared to galvanized steel.

Heat Reflectivity:

- Aluminium-zinc plated steel has twice the thermal reflectivity of galvanized steel, making it an excellent thermal insulator. This property enhances its suitability for applications where heat reflection is beneficial.

In summary, aluminium-zinc plated steel, or Galvalume, offers enhanced corrosion resistance, better aesthetic longevity, and superior thermal reflectivity compared to traditional galvanized steel, making it a more durable and versatile choice for various applications.

• Specifications:

1) Standard: ASTM A792M, AS1397, EN10346/ EN10143 all according to the customer's request
2) Grade: SGCC, CS-Type B, Grade 350, G550, Grade 50, Grade 80, SS550GD, all according to the customer's request

3) Capacity: about 20000 tons per month

4) Thickness: from 0.13mm to 2mm, all available
5) Width: from 600mm to 1250mm, regular size:750-762mm,900-914mm,1000mm,1200mm,1219-1250mm all available
6) Coil ID: 508mm
7) Coil weight: from 2-10MT, according to the customer's request

8) Zinc coating weight: AZ30~AZ165g/m2

9) Spangle: regular spangle,big spangle, small spangle
10) Surface treatment: Anti-finger print (Green, Blue, Golden, No color) Chemical passivating, oils, passivating oils,skin passed
11) Edge: mill edge, cut edge
12) Min trial order 25 ton each thickness

Detailed Parameters:

Application:

Export Package

Shandong Decho Building Materials Technology Co., Ltd (hereafter called “DBM” ) is a professional manufacturer and exporting company of coated steel coils and sheets, with over 13 years of experience in steel industry and 11 years of steel mill work experience, with extensive product knowledge and experience in production process, especially for the supply of coated steel coils with a stable and reliable supply chain of manufacturers and logistics.

DBM is always in pursuit of and committed to providing high quality products and services. Our company has professional quality inspection team members, for each batch of orders can be fully on-site testing and provide test reports, can also accept any third-party testing company on-site testing, we can do is to ensure that each order goods delivered to a high standard, to achieve customer satisfaction, to achieve win-win cooperation.

DBM can meet the need to use colour steel plate as raw material for building. Decho Building Materials colour steel plate is mainly processed into, for example, colour steel corrugated board or colour steel composite sandwich board after our colour steel plate is widely used in the construction of airports, freezers, steel plants, warehouses, and other industrial buildings and commercial buildings, such as the roof of the colour steel tiles, colour steel plate sandwich walls and doors.

DBM only focus on high standard coated coils with warranty service, We are your strict gatekeeper and faithful partner in China import , We always been committed to becoming your long-term reliable supplier in China.