There are two types of doors and windows, one is aluminum-clad wood doors and windows, and the other is wood-clad aluminum doors and windows.

1. The concept of aluminum-wood composite was originally introduced by Germany, and domestic manufacturers have processed this concept and imitated aluminum-wood composite doors and windows in form, so today there is aluminum-clad wood.
2. From the appearance form, people who do not know how to do it will think there is no difference, which is also the savvy part of domestic manufacturers. But after all, the mystery is a mystery. If you haven't been instructed by people in the industry, you can hardly understand what is going on. 
3. Germany has strict requirements on the structure, standard system and connection method of aluminum-wood composite doors and windows. For example, the connection between aluminum and wood, aluminum-wood composite doors and windows adopt plastic clasps and aluminum suspension buckles and adopt three sets of corner codes for scientific connection. However, domestic aluminum-clad wood usually adopts mechanical connections such as screwing or welding, and the corner codes are a group or no corner codes. Screwing and welding have a destructive effect on wood and aluminum profiles, and the stability and thermal insulation effects can be imagined. 
4. The wall thickness of the aluminum alloy of aluminum-wood composite doors and windows is 2.2-2.4mm, while the wall thickness of the aluminum-clad aluminum alloy is usually about 1mm. Aluminum clad wood is just an imitation of the composite form of aluminum and wood, and the strength of window formation is only based on solid wood, while the strength of aluminum and wood composite can reach 1 + 1> 2. The so-called "1 + 1> 2" means that the strength of the window is greater than the sum of the strengths of aluminum alloy and solid wood. Generally speaking, aluminum-clad wood doors and windows are more wood and less aluminum, while wooden-clad aluminum doors and windows are less wood and more aluminum! The main stress structure of aluminum-clad wood is pure solid wood, while the inner side of wood-clad aluminum is a layer of wood board, and the main stress structure is an aluminum alloy of the broken bridge. Most of the aluminum-clad doors and windows use red oak or larch as the main structural material. Through intelligent mechanical machine tools such as machining centers, they become the most important part of doors and windows. Aluminum profiles are covered on the outside of the wood to resist wind and sun. Avoid wood decay and aging. The appearance of wood-clad aluminum and aluminum-clad wood windows is very similar after installation. The interior is solid wood and the outdoor is a broken bridge aluminum alloy material. A special process is used to inlay a layer of high-quality pure wood inside the window to form a wood-clad aluminum window. This structure is perfect. The ground retains the aesthetic characteristics of the wooden windows while increasing the rigidity, weather resistance, wind pressure and other characteristics of the wooden windows.
The decorative effect is seamless with the form.