The 90° T-type connector is one of the standard components for aluminum profile stairway platform systems and belongs to the category of internal expansion connection components. This connector is primarily used for right-angle 4-way connection at the intermediate structure of platfrom hanrail corner. It's designed for assembly with 6063-T5 φ40 aluminum tubes. This diagram illustrates the 90° 4-way connection between tubes by T-type connector
