Corrugated aluminum sheet (profiled aluminum sheet, aluminum tile)

Corrugated aluminum panels, also known as aluminum tiles or corrugated aluminum sheets, are metal‑profiled panels manufactured by cold‑rolling and forming an aluminum alloy substrate into continuous wave‑shaped or trapezoidal corrugations. They are broadly classified into two main types: single‑layer corrugated aluminum panels and aluminum‑core composite panels (consisting of a corrugated core sandwiched between aluminum face sheets).

I. Common Materials

Common rust‑resistant aluminum alloys include 3003, 3004, and 3105; they offer excellent corrosion resistance and are suitable for outdoor applications. In coastal environments with high salt‑mist exposure, alloys 3004 and 5005 are preferred.

II. Surface Treatment

- Original glossy finish: natural aluminum color, low cost
Polyester PE coating: indoor, standard outdoor
Fluorocarbon PVDF coating: excellent outdoor weather resistance, UV protection, and long service life.
Anodizing and embossing treatment

III. Main Specifications

Substrate thickness: 0.5–1.5 mm (commonly 0.7–1.2 mm for roofing)
Common profiles: Type 750, Type 840, Type 850, Type 900; trapezoidal and corrugated profiles such as YX18‑76‑836 and YX35‑125‑750, with wave heights ranging from 18 to 35 mm and lengths available for custom fabrication.

IV. Product Features

1. Lightweight and high-strength: With a density of approximately 2.7 g/cm³, it weighs only one-third as much as steel; its corrugated structure significantly enhances flexural rigidity, reducing the load on the building’s structural system.
2. Corrosion and Weather Resistance: Aluminum naturally forms an oxide protective layer, and with a coating, it can withstand acid rain and salt spray, making it suitable for coastal areas and chemical industrial zones. It offers a long service life and virtually requires no maintenance.
3. Fire Safety: Class A non-combustible material; does not emit toxic fumes in the event of a fire.
4. Drainage and Rain Protection: The corrugated structure facilitates rapid water runoff, reducing the risk of ponding and leakage on the roof.
5. Convenient construction: Can be cut and bent, installed with lap joints or edge‑locking, shortens the construction period, and allows on‑site fabrication.
6. Environmentally friendly and recyclable: Aluminum is 100% recyclable and reusable, with no release of harmful substances.
7. Reflective Thermal Insulation: The surface reflects solar heat, reducing indoor temperatures and lowering energy consumption.

V. Application Areas

1. Roofing: factory buildings, warehouses, large-span steel structures, gymnasiums, and garage roofs;
2. Exterior envelope: exterior walls of industrial buildings and curtain wall cladding;
3. Interior ceiling: Aluminum corrugated composite panels are commonly used, installed using a snap‑fit system.
4. Municipal facilities, greenhouses, temporary structures, equipment guards, and the like.

VI. Single-Layer Corrugated Aluminum Panel vs. Aluminum-Corrugated Composite Panel

Single-layer corrugated aluminum panels: formed by direct roll‑forming, they are low‑cost and commonly used for roofing and exterior wall cladding; their sound‑insulation and thermal‑insulation performance is average.
Aluminum corrugated composite panel: consists of aluminum face sheets on the top and bottom with an aluminum corrugated core in the middle, offering higher stiffness and excellent sound insulation. It is commonly used for interior ceilings and high-end curtain walls, though it is slightly heavier and more expensive.