Domestic water supply pipe—Polypropylene pipe (PP-R) is a new type of domestic water supply pipe currently being promoted and used in China. It can be widely used in indoor cold and hot water supply systems and air-conditioning water systems. PP-R pipe is made of random copolymer polypropylene material. It has the advantages of light weight, hygienic non-toxic, good heat resistance, corrosion resistance, good heat preservation performance and so on.
1. Construction technicians are familiar with the drawings carefully, understand the design intent, and contact the owner, supervision and design personnel in time for the problems found in the drawings, and make a review of the drawings and make a record of the review. The installer must be familiar with the general performance of the -PP-R pipe and master the essential operating points.
2. Before the start of each prefabricated processing project, prepare a material plan according to the design and construction drawings, prepare the required materials, equipment, etc. according to the specifications and models and ship them to the site.
3. Material and equipment requirements: Pipes and fittings to the site must be carefully inspected and verified by the supervisor and the owner to verify the material, check the warranty certificate, specifications, model, etc., and put them into the warehouse after passing the inspection, and mark them separately.
1 (1) The inner and outer walls of pipes and fittings shall be smooth and flat, free of air bubbles, cracks, peeling and obvious marks and depressions, and the color shall be basically the same.
(2) The end face of the pipe shall be perpendicular to the axis of the pipe. The fittings shall be complete, free from defects and free from deformation.
3 (3) Pipes and pipes should not be exposed to sunlight for a long time. In order to avoid bending of pipes during storage and transportation, they should be stacked flat. When handling pipes and fittings, handle them with care, avoid oil pollution, do not violently impact, touch with sharp points and throw, drop, or drag.
(4) When the temperature difference between the construction site and the material storage area is large, the fittings and pipes should be placed on the site for a certain period of time before installation to bring the temperature close to the ambient temperature of the construction site.
The above contents are compiled according to the problems encountered in the actual work for reference. If you have any questions, please communicate and correct them in time.
