Composite air pipe suitable for ship

The utility model discloses a composite air pipe suitable for ships, which comprises an outer air pipe and a framework used for supporting the outer air pipe, the framework is arranged in a spiral shape, the section cutting plane of the framework is in an unclosed square shape, a part of the outer air pipe is arranged in the framework in a folding mode, a locking assembly is arranged in the framework in a sliding mode, and the locking assembly is used for locking the outer air pipe. The locking assembly comprises a sliding body and a hanging ring body, the sliding body is partially arranged in the framework and protrudes out of the outer side of the outer air pipe, and the hanging ring body is connected with the sliding body. The framework of a special structure is combined with the outer air pipe, the space bending requirement is met, the acid and alkali resistance requirement is high, installation and fixation are convenient, and the service life is long. 本实用新型公开了一种适用于船舶的复合风管，包括外风管以及用以支撑所述外风管的骨架，所述骨架呈螺旋状设置，