PE water supply pipe

Another reason why polyethylene can be widely applied is that polyvinyl chloride is increasingly under pressure from environmental protection.

1、 PE water supply pipe construction plan

① Avoid passing through expansion joints and settlement joints. If it is necessary to pass through, corresponding technical measures should be taken to prevent the pipeline from being damaged due to settlement or expansion of the building's internal materials.

② It should be avoided to arrange pipelines that may be affected by equipment vibration or heavy objects, so pipelines should not pass through the foundation of production equipment.

③ Pipelines should generally be buried underground or laid on the ground or exposed under floor slabs. If there are special requirements for construction or technology, they can be concealed in pipe troughs, pipe wells, pipe trenches, or suspended ceilings, but they should be easy to install and maintain.

④ Try to avoid crossing PE water supply pipes with other pipelines or equipment as much as possible. When the water supply pipe and the discharge pipe are arranged at the same place to enter and exit the building, in order to facilitate maintenance and avoid or reduce the phenomenon of soil moisture corrosion and pollution of the water supply pipe caused by leakage of the drainage pipe, the horizontal distance between the PE water supply pipe and the outer wall of the discharge pipe shall not be less than 1.0m.

2、 Construction steps

① Measure and set out, excavate mechanically or manually to a depth of 20cm from the base, mark it properly, and place the centerline and edge lines.

② Excavate the trench foundation construction, reserve about 20cm of protective side at the bottom of the trench, and manually clean the trench bottom to ensure that the undisturbed soil at the bottom of the PE water supply pipe trench is not disturbed. If stones are encountered, they should be removed from the site and replaced with soil with better soil for backfilling. When the excavation depth is greater than 2.5 meters, the width should not be less than 0.5 meters. When the soil is loose, it should be appropriately enlarged according to the soil quality.

③ Construction placement: Before construction, check the water supply pipe and valve fittings. Use a crane to lift the PE water supply pipe into the groove. During placement, avoid violent collisions with the groove wall and ensure that the placement position coincides with the measurement and laying out position.

④ 24 hours after the completion of the PE water supply pipe construction, a hydrostatic test should be conducted, and various acceptance records should be filled out in a timely manner. After all data is normal, backfilling should be carried out, and the soil in the trench should be compacted layer by layer.

Attention should be paid to backfilling and compaction: the backfill soil should not be less than 500 millimeters, and the PE water supply pipeline should be filled with soil when filled with water. When backfilling in trenches mixed with soil and stone, 200mm to 300mm of gravel free clay should be transported from elsewhere, compacted, and then filled with other miscellaneous soil.

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