Abstract: A steering apparatus includes a frame, a linkage, a pivot, a king pin assembly and two castors. The frame includes an extensive portion extending downward from a base plate. The linkage includes two connecting rods, a front hanger and a back hanger. The front hanger is pivotally connected to the connecting rods and includes a screw hole. The back hanger is pivotally connected to the connecting rods and includes an aperture. The pivot includes a smooth section inserted in a bore of the extensive portion and a threaded section inserted in the screw hole. The king pin assembly includes two bushings inserted in two ends of the aperture, two washers inserted in the ends of the aperture, and a king pin inserted in a cavity of the base plate, the aperture, the bushings and the washers, and then engaged with a nut. The castors are connected to the connecting rods.