90 degree right angle fixed joint is used for the side of T-shaped aluminum pipe to make it connected at an included angle of 90 °. When it is impossible to use built-in and external joints, 90 degree right angle fixed joint can be connected between protruding buckles of aluminum pipe. Of course, it is not limited to the side of T-shaped aluminum tube, it can also act on 28 series aluminum tube and 43 series aluminum tube. These products can be widely used in household, automobile , electronics, chemical industry, commercial logistics, flexible storage equipment, pharmacy, machine manufacturing.