When PE polyethylene pipe fittings are constructed in winter, due to the low temperature, special attention should be paid to the following aspects.
First, the storage of materials should be more careful. In winter, the temperature is low, and if PE pipe fittings are exposed to the cold environment for a long time, they may become brittle and easily damaged. Therefore, pipe fittings should be stored in a dry and warm indoor warehouse to avoid moisture and freezing. During transportation, they should also be handled with care to prevent cracks caused by collision.
Secondly, the preparation of the construction environment is crucial. Before laying PE pipes, ensure that there is no ice and snow on the ground at the construction site to avoid affecting the construction quality. If the temperature at the construction site is too low, consider building a temporary insulation shed and using heating equipment to increase the temperature of the construction area to ensure that the construction environment temperature is within a suitable range.
Furthermore, the selection and operation of the connection method need to be more cautious. Hot melt connection is one of the commonly used connection methods for PE pipe fittings, but in winter, due to the low ambient temperature, the time and temperature of hot melt need to be adjusted appropriately. If the hot melt temperature is not enough or the time is insufficient, the connection may be loose; if the temperature is too high or the time is too long, the pipes and fittings may be damaged. When making electric fusion connections, attention should also be paid to the preheating and insulation of the electric fusion equipment to ensure the quality of the connection.
In addition, there are special requirements for pipeline pressure testing. In winter, the temperature is low and the water in the pipeline is easy to freeze, which may affect the pressure test results. Therefore, before the pressure test, ensure that the water in the pipeline is fully drained, or use antifreeze instead of water for pressure testing. During the pressure test, the changes in the pipeline should be closely observed. Once an abnormality is found, the pressure test should be stopped immediately and checked.
Finally, the protective measures after construction cannot be ignored. After the construction is completed, the pipeline should be insulated in time to prevent the pipeline from freezing and cracking at low temperatures. The pipeline can be wrapped with insulation materials or filled with insulation materials around the pipeline to improve the cold resistance of the pipeline.
In short, when PE polyethylene pipe fittings are constructed in winter, it is necessary to fully consider the impact of the low temperature environment and take a series of special precautions to ensure the construction quality and safe operation of the pipeline.
