Application of Plastic Square Tubes in Type III Barricades

Plastic square tubes play a vital structural role in Type III barricades, which are widely used for road closures, construction zones, and other traffic control applications. These barricades typically consist of three horizontal reflective boards supported by two vertical uprights, where plastic square tubes are commonly used as the main upright components.

Plastic square tubes serve as the primary vertical supports on both sides of the barricade. They provide the structural stability needed to hold the three reflective panels securely in place, even under outdoor conditions such as wind or rain.  Plastic uprights have smoother edges than steel, minimizing the risk of injury during handling. They are often color-matched or coordinated with the reflective panels to improve day and night visibility. Plastic square tubes are designed to withstand demanding outdoor environments. They are unaffected by rust and can maintain structural integrity over time, reducing the need for maintenance or replacement. Compared to traditional metal uprights, plastic square tubes significantly reduce the overall weight of the barricade, making it easier to transport, carry, and set up, especially useful for temporary lane closures or emergency deployment.