At present, there are two mainstream window materials in the market, plastic steel windows and broken bridge aluminum windows.
It refers to the window frame material, plastic steel is PVC plastic material, and broken bridge aluminum is aluminum alloy material.
In fact, aluminum alloy appeared earlier than plastic steel, but the early aluminum alloy material was relatively poor. At that time, it was aluminum alloy. Sliding window, with rivets fixed windows household track is far worse than the current broken bridge insulation aluminum alloy.
A certain gap must be left between the aluminium alloy sliding window window frame and the track to ensure smooth push and pull, so the close of the sliding window is relatively poor. If you stick a sealing strip to ensure the tightness, you will find it more and more difficult to open the window.
The South always likes to use sliding window, because it is better casement window cheap, and the southern climate is not cold and does not pay much attention to the tightness; There is a demand for winter insulation in the north, so the airtight sliding window are slowly eliminated.
In the 1990 s, plastic steel windows appeared. Because the plastic was not very strong, it was lined with a layer of steel plate in mat, so it was called "plastic steel".
But after all, it is still plastic, not durable, easy to turn yellow and change color, the quality of plastic steel windows is particularly good, and the technical cost is very high.
Plastic steel window section, Green is steel lining
actually, good plastic steel casement window, benho broken bridge aluminum Casement is expensive.
In this way, broken bridge aluminum is a cost-effective choice.
Aluminum window frame added nylon strips, which is the so-called "Broken Bridge".
Because the metal has strong thermal conductivity and nylon has poor thermal conductivity, nylon strips mainly improve the thermal insulation of window frames.
Nylon strip inside the red frame
in Broken Bridge aluminum, aluminum clad wood was developed, which is made of aluminum alloy shell and inner solid wood profile, and its thermal insulation is better than nylon strip.
Aluminum clad wood is mainly used to improve its appearance. It is a high-end consumer goods with a starting price of 1,700 yuan/square meter. It is not necessary for ordinary families to use it.
The simple conclusion is that ordinary people buy broken bridge aluminum windows; There is only one case that recommend buy plastic steel windows, which is particularly demanding for sound insulation. Go and see soundproof window