啦啦啦日韩免费视频在线观看_亚洲一区二区三区人妻高清_精品中文字幕在线观看视频免费_九色人妻_欧美特大AA级黄片_亚洲 白丝 在线_亚洲啪啪区_五月天成年网_国产Av超碰_欧美日色欲91AⅤ_乱色熟女一区二区三区i_免费色软件_91福利短文_99久久中文字幕三级久久日本 _丁香六月综合啪啪激情

There are more industrial aluminum profiles in the construction industry.

It is particularly popular because of its special performance.

But with the development of science and technology,

The types of industrial aluminum profiles are gradually increasing.

Of course, there are more and more functional aspects.

The more popular in recent years should be industrial profiles.

Advantages of industrial aluminum extrusion profile

The process is simple: only need to be designed, cut / drilling,

The combination can be done, and the traditional material is usually designed,

Cutting / drilling, welding, sandblasting / surface treatment, surface spraying and other complex process.

Materials can be reused:

There is no heat welding in the whole manufacturing process because of the use of industrial aluminum profiles.

So the parts can be dismantled easily.

All materials and accessories can be reused.

However, the fact that the traditional materials are not used repeatedly because of the cutting deformation and the high cost of dismantling.

The main chemical properties of aluminum profiles are active metals.

A dense oxide film of about 50 angstroms (1 =0.1 nanometers) is formed on the surface of the aluminum in the dry air immediately.

The aluminum will not be further oxidized and can withstand water.

But the mixture of aluminum powder and air is very easy to burn.

Molten aluminum can react violently with water.

At high temperatures, many can be reduced to corresponding metals.

Aluminum is amphoteric, easily soluble in strong alkali and soluble in dilute acid.