Layout and laying of PEX pipelines: First, the location and direction of the piping should be determined according to the structure and process layout requirements of the building; the pipelines should be hidden or embedded in the ceiling, pipe holes, and pipe wells; When inside the cast-in-place layer, protective rigid PVC corrugated pipes should be installed; when the pipes pass through the floor and roof, fixed support points should be set at the crossing parts, and strict waterproof measures should be taken, and casings should be installed when crossing walls, beams and columns; The pipeline should not pass through the settlement joints and expansion joints of the building. When it has to pass through, anti-settlement and expansion measures should be set at the crossing part; when the outdoor pipeline passes through the concrete wall of the basement, anti-settlement measures should be taken; The pipe section between the inlet and outlet pipes to the valve shall be made of corrosion-resistant metal pipes.
