First, the installation of embedded parts (embedded parts): Railing embedded parts can only be installed after the installation of embedded parts approach, the practice is to use expansion bolts and steel to make post-connectors, first put in the civil base line Determine the position of the fixed point of the column, then use the impact drill to drill on the ground, and then install the expansion bolt. The bolt maintains a sufficient length. After the bolt is positioned, the bolt is tightened and the nut and the screw are welded to prevent the nut and the steel plate from welding. Loosening. The above method is also applied to the connection between the handrail and the wall surface.
Second, put the line: due to the above embedded parts after construction, there may be errors, therefore, before the column installation, should be re-line to determine the accuracy of the buried plate position and welding pole, if any deviation, timely correction. It should be ensured that the stainless steel pillars are all located on the steel plate and can be welded around.
Third, the installation of columns: welding column, the need for double, a hold on the steel pipe to keep it vertical, can not be shaken during welding, welding welding the other person, to be around welding, and should comply with the welding specification.
Fourth, the handrail and the column connection: Before the installation of the column, through the stretch line pay, according to the site of the tilt angle and the roundness of the handrail used in the upper end of the groove processing. Then put the handrail directly into the column groove, and then spot welding installation from one end to the other end. The adjacent handrails are installed and docked accurately, and the joints are tight. After the adjacent steel pipes are mated, the joints are welded with stainless steel electrodes. Before welding, oil, burrs, rust, etc. must be removed from the side of the weld between 30 and 50mm.
5. Polishing and polishing: After all the welding is completed, the weld joint shall be sanded with a hand grinder until the weld is not visible. When polishing, use velvet wheel or felt for polishing, and use the corresponding polishing paste until it is basically the same as the adjacent parent material, and the weld is not visible.
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