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Hollow aluminum strip classification
There are two main types of hollow aluminum strips: the traditional four-corner plug-in type and the improved continuous long tube corner type. In the specific way, the four-corner plug-in type is divided into two types: the glue coating treatment and the non-gluing treatment at the joint. In general, the fewer the joints of the aluminum frame, the better the sealing performance, and the continuous long-angled aluminum frame with only one joint is much improved compared to the four-cornered joint. However, if the four-corner aluminum frame is glued at the joint and the continuous long tube is not coated, the sealing performance of the joint is not necessarily better than that of the joint. In view of the fact that the spacer aluminum frames currently used in China (especially in small and medium-sized enterprises) are mostly four-corner type, and the manufacturing cost of the continuous long-angled aluminum frame is higher, the practical method for improving the sealing performance of the hollow window is to take A method of applying glue at a square joint.