Angle steel feeding device and air pipe angle steel flange production line

The invention discloses an angle steel feeding device and an air pipe angle steel flange production line, and relates to the technical field of air pipe production equipment. The feeding device comprises a material waiting frame and a turnover frame, a plurality of material waiting grooves are formed in the upper end of the material waiting frame, a plurality of material waiting protruding edges are arranged at the upper end of the turnover frame, the turnover frame is provided with a clamping assembly in a matched mode, and under the condition that the turnover frame is located above the material waiting frame, the material waiting protruding edges are located above the corresponding material waiting grooves. The material taking assembly can move up and down, a plurality of material taking protruding edges are arranged at the lower end of the material taking assembly in parallel, a single angle steel can be contained between every two adjacent material taking protruding edges, a plurality of permanent magnet