1, aluminum alloy doors and Windows profile specifications are: 35 series, 38 series, 40 series, 60 series, 70 series, 90 series and so on.

2, the so-called 35, 38 refers to the width of the aluminum alloy profile main frame is 35 mm, 38 mm.

3, aluminum doors and Windows profile size, mainly to profile section height size (used in aluminum alloy doors and Windows called the thickness of the window frame size) as a sign, and constitute a size series. The size series of aluminum alloy window is smaller, and the size series of aluminum alloy door is larger. The size series of aluminum doors and Windows are marked the same, and the sectional shape and size of aluminum doors and Windows profiles are not necessarily the same.

Extended information

Profile production features:

1, varieties and specifications. It has reached more than ten thousand kinds, and in the production, except for a few special mills to produce special products, the vast majority of profile mills are in the production of multiple varieties, multiple specifications.

2. Large difference in section shape. In profile products, in addition to square, round, flat steel section shape is simple and the difference is not big, most complex section profiles (such as I-steel, H-shaped steel, Z-shaped steel, channel steel, rail, etc.) not only complex section shape, but also different from each other, the pass design and rolling production of these products have their own particularity.

3. The complexity of the section shape makes the deformation of each part of the metal in the rolling process, the temperature distribution of the section and the wear of the roll are not uniform, so the size of the rolled parts is difficult to calculate and control, and the installation of the rolling mill adjustment and guide device is also more complex.

4. In addition, single varieties or specifications of complex section profiles are usually small in batch. The above factors make the development of complex section profile rolling technology difficult.

5, rolling mill structure and rolling mill layout. There are two - high rolling mill, three - high rolling mill, four - high pass rolling mill, multi - high pass rolling mill, Y - type rolling mill, 45° mill and cantilever rolling mill. There are horizontal rolling mill, sequential rolling mill, checkerboard rolling mill, semi-continuous rolling mill and continuous rolling mill in the layout of rolling mills.