Installation of embedded parts, line installation of column handrails and column connection, polishing and polishing; installation of embedded parts (embedded parts added later). The installation of embedded parts of stair railings can only adopt the method of adding embedded parts. The method is to use expansion bolts and The steel plate is used to make the rear connector. First lay the line on the civil construction base layer to determine the position of the fixed point of the column, and then drill the hole on the floor of the staircase with a percussion drill, and then install the expansion bolts. The bolts are kept in sufficient length. After the bolts are positioned, Tighten the bolt and weld the nut and the screw to prevent the nut and the steel plate from loosening. The connection between the handrail and the wall surface also adopts the above method.
Laying out due to the above-mentioned post-embedded construction may cause errors. Therefore, before the column is installed, the line should be laid out again to determine the accuracy of the buried plate position and the welded vertical pole. If there is any deviation, it should be corrected in time. It should be ensured that all stainless steel columns are seated on steel plates and can be welded around. When installing the column welding column, two people are required to cooperate. One holds the steel pipe to keep it vertical and cannot shake during welding.
Before installation, the five-handrail and the upright column are connected to the upright column, and the wire is laid out through an elongated line. According to the inclination angle of the stairs and the roundness of the handrail used, a groove is machined at its upper end. Then put the handrail directly into the groove of the column, and install it by spot welding from one end to the other. The adjacent handrails are installed accurately and the joints are tight. After the adjacent steel pipes are butted, the joints are welded with stainless steel electrodes. Before welding, oil stains, burrs, rust spots, etc. within the range of 30-50mm along each side of the weld must be removed. Grinding and polishing After all the welding is completed, use a hand-held grinding wheel grinder to flatten and sand the weld until the weld is not visible. When polishing, use flannel grinding wheel or felt to polish, and use the corresponding polishing paste at the same time, until it is basically the same as the adjacent base material, and the welding seam is not obvious.