Notes on construction of 90° pre insulated bend:
1.During construction, immersion in groundwater and rainwater should be avoided. If the end is accidentally immersed in water, drying treatment should be done before connecting the jacket.
2.The 90° pre insulated bend should be stored in a flat area, neatly stacked, and the stacking height should be less than 1.5 meters.
3.The lifting of pipes should be carried out with care, and collision, throwing, and direct lifting of the pipe body with steel wire ropes is prohibited.
4.The insulation layer and anti-corrosion layer should avoid direct contact with flames.
Safety and specifications for backfilling construction of buried insulation pipes
90° pre insulated bend, as a pipeline material with good insulation effect and energy saving, is applied in urban heating, cooling and industrial pipeline systems. Its unique insulation structure not only effectively reduces heat loss, but also improves the overall service life of the pipeline. However, the handling of backfilling during the construction process has a significant impact on the safety and service life of the pipeline.
During the construction and backfilling process of polyurethane prefabricated buried insulation pipes, it is necessary to strictly follow the specifications, otherwise it may cause compression damage to the pipes. The standardized backfill operation requires the use of suitable backfill materials and layer by layer compaction to ensure the compactness and stability of the backfill materials. At the same time, the use of large mechanical equipment for violent backfilling should be avoided during the backfilling process to avoid unnecessary damage to the pipeline.
If violent backfilling is used, the backfill material may exert excessive pressure on the pipeline, causing deformation or even damage to the pipeline. This not only affects the normal use of pipelines, but may also cause safety accidents, posing a serious threat to people's lives and property safety.
Therefore, in the construction and backfilling process of polyurethane prefabricated buried insulation pipes, relevant regulations must be strictly followed to ensure the safety and effectiveness of the backfilling operation. By using reasonable backfill materials and scientific backfill methods, the service life of pipelines can be guaranteed, heat loss can be reduced, and the operational efficiency of the entire pipeline system can be improved.
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