In the production of PP pipes, the commonly used processing methods are slurry and gas phase processing methods. The reactor for slurry processing is usually a stirred kettle, or a relatively large annular reactor, which can mainly be stirred in the slurry. In the process of chemical reaction, as soon as ethylene comes into contact with the comonomer and catalyst, a reaction occurs, resulting in the formation of polyethylene particles.
The expansion coefficient of PP pipeline is larger, so thermal compensation should be considered during installation, generally based on natural compensation, the rigidity and compressive strength of PP pipe are better than that of traditional plastic pipes, and there are three connection methods: welding method, end edge welding method, and different material reception. The pipelayer frame and bracket need to be able to adapt to the elasticity of the pipe fittings, avoid swaying, adjust the concave and convex slope, and be able to transport various corrosive media below 90 degrees Celsius.
The inside of the tube should be cleaned before loading and receiving, and it can be used after checking that it is indeed undamaged. The piping in the house should cooperate with the pipelines of other systems, and the installation should be at a height or close to the edge of the wall, the pipeline should be the criterion with the wall, and the pipeline should be parallel or straight to the wall, and the external piping should be parallel or straight with the building.
The outdoor piping part is buried pipe equipment, and the indoor piping part is a mixed equipment of buried pipe and open pipe, and the pipeline shall not be buried in concrete unless otherwise specified. When selecting PP pipes, the appearance is rough, there are molding defects, the color is not correct, there are impurities, and the printing quality is poor, so do not choose.