Construction steel manages cutting device

The utility model discloses a construction steel manages cutting device, the on -line screen storage device comprises a base, open at base upper end middle part has dovetail A, be equipped with the dovetail block A rather than sliding connection in the dovetail A, dovetail block A fixes the lower extreme at the plectane, open the top of plectane has the ring channel, the ring channel is the dovetail, the inside of ring channel is equipped with three dovetail block B rather than sliding connection, dovetail block B fixes the upper end at the slider, be equipped with the screw rather than threaded connection in the slider, slider and telescopic rod hinge, the telescopic link is articulated with the board, the side at pole A is fixed to the board, pole A's lower extreme is fixed with the universal joint, the lower extreme of universal joint is fixed on pole B. The utility model discloses can according to the shape of different work pieces rotate with the adjustment of position height, thelower surface of some se