A rectangular cardboard tube is a cylindrical package made of cardboard, but with a rectangular cross-section instead of a circular cross-section.  This shape provides stability and prevents the tube from rolling, making it suitable for certain types of products or applications where circular tubes may not be practical.  These tubes are commonly used to pack and transport various items, such as posters, documents, blueprints, or other materials that need to be protected from bending or damage. 

Some of our products use this tubes to make the asembled box which is easy to assemble, and has a good bearing capacity. We supply various shapes of the paper tubes, welcome your inquiry.

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