2. Reinstall the face tube, fix the face tube with the wall surface with the U-shaped clip and anti-theft screw, and fix the face tube with the upright post with the fixed seat or the U-shaped clip and self-tapping screw.
3. Install the cross bar and vertical bar. According to the customer's requirements, the crossbar is punched with a punch, and the vertical rod passes through the hole. Cross bars and columns are fixed with fixed seats and self-tapping screws.
4. Fix the upper line of the handrail on the lower line of the handrail, fix the upper line and the lower line with self-tapping nails, seal the nail hole with cement and polish it smoothly.