Hydraulic cutting machine for steel tubes

A hydraulic cutting machine for steel tubes comprises a base and a bracket, wherein the bracket, which is vertically arranged, is positioned on the base; a vertical cutting device is arranged on one side of the bracket, and comprises a hydraulic cylinder which is vertically arranged; the lower end of the hydraulic cylinder is connected with a cutting blade fixing device; the cutting blade fixing device is connected with the bracket in a sliding manner; the lower side of the cutting blade fixing device is connected with a rotational cutting blade; two drive wheels rotating in the same direction are arranged in parallel below the cutting blade, and are mounted on the base; rotation planes of the driven wheels are parallel to that of the cutting blade; and the up-down running route of the cutting blade is positioned between the center lines of the two drive wheels. Through the use of the hydraulic cutting machine, the predesign requirement can be completely met, the requirements of high steel tube cutting quality and large short-period used amount on a construction site can be met, the wear cost of the cutting wheels is low, and the hydraulic cutting machine embodies strong market competitiveness in the respect of machining of structural metal.