CONCRETE CONVEYING PIPE AND MANUFACTURING METHOD THEREOF

摘要

A concrete conveying pipe and a manufacturing method thereof are disclosed. The concrete conveying pipe with at least two bends includes an inner pipe (11) and an outer pipe (12) joined to the outside of the inner pipe (11). The outer pipe (12) comprises at least a first part and a second part. The cross-sections of the first part and the second part are both arc-shaped. The first part and the second part are connected to form the outer pipe (12). The abrasion performance of the inner pipe (11) is higher than that of the outer pipe (12) while the toughness of the outer pipe (12) is higher than that of the inner pipe (11). The concrete conveying pipe not only meets the requirement of the abrasion performance, but also meets the requirement of the mechanical strength.