For example, T-keel ah, triangular keel ah, aluminum keel ah, etc., belong to the paint keel it
There are light steel partition, there are keels, that is the other cross-sectional shape.
You said the keel is used to do the ceiling, aluminum keel and paint keel is divided by material, aluminum surface oxide film protection, no paint, paint keel is in the ordinary metal keel surface to increase the paint protective layer, Paint keel, in the installation of anti-rust paint and a variety of colors when the finish; and T-keel triangle keel, is the ceiling keel section shape, different from the ceiling type, and some ceiling installation can be seen after the completion of Keel (T-type), and some ceiling installation can not see the keel (triangle).
Paint refers to the appearance of the wooden door, the surface of the door sprayed with different colors of paint, baked in the barn inside; keel refers to the structure inside the wooden door, some hollow, that is, outside the two sides of the panel, what No, you knock to listen to the sound to know.
