HDPE double wall corrugated drainage pipe
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Product Features
High strength, good compression resistance and impact resistance.
Good resistance to uneven settlement, can be applied to soft soil quicksand foundation
Easy link, no leakage of joints.
The inner wall is smooth, the friction resistance is small, and the water penetration ability is strong.
Corrosion-resistant, no pollution.
Light weight, easy to handle, convenient construction, low compre- hensive project cost.
Application area
The corrugated structure of the outer wall designed by the principle of mechanics is scientific and reasonable and has good physical and mechanical properties.1, iong service life.
The normal service life can reach more than 50 years.
In addition to a few strong oxidants, it can resist the erosion of a variety of chemical substances and has good leakage resistance.
Compared with the wear resistance of steel pipe, the wear resistance is more than 4 times that of steel pipe.
Good toughness, high impact strength; High embrittlement tempera- ture, use range -60 ℃-40℃.
The pipeline has the advantages of light weight, convenient construction, fast connection, reliable connection and low overall project cost.
The pipe has good flexibility, can be moderately bent, and has good anti-uneven settlement effect.
The surface of the pipe is smooth and the fluid resistance is small, which can reduce the pressure loss of the pipeline and the energy consumption of water transmission.
Construction and connection method of PE double wall corrugated pipe pipeline
Should be carefully checked in the loading and unloading transportation stacking process for damage, such as damaged cracks,deformation and other defects of the pipe, should be removed in time.
The inspection well and the pipeline should be connected with a flexible packing seal of the rong joint, the specific construction according to the design requirements.
(1)The clear width of the groove bottom should be adopted according to the outer diameter of the pipe J3006m.
(2) Drainage measures should be taken during trench excavation to prevent the bottom of the trench from being invaded by water.
(3) The pipeline foundation must use sand and gravel cushion layer, for general soil foundation, the thickness is zero 0.1m; For soft soil founda- tion, the thickness is not less than 0.2m,and the specific method is according to the design requirements.
(4) The foundation should be rammed and the surface should be smooth. The interface part of the pipeline foundation should be reserved for grooves for interface operation, and the length of the grooves should be 0.4m - 0.6m, the depth should be 0.05-0.1 m, and the width should be 1.1 times of the outer diameter of the pipe.
When the groove depth is not large, the pipe can be lifted by the worker such as the groove, the groove depth is greater than 3m, and the non-metal rope can be used to slide the pipe into the groove. Do not hook the pipe ends with metal ropes or roll the pipe from the groove into the groove.
(1). The axillary corner should be filled with medium sand and coarse sand first.
(2) From the beginning of the foundation part to the top slot of the pipe within the range of 0.7m, must be manually backfilled.
(3) The trench should be layered symmetrical backfill, tamping, each layer of backfill height should not be greater than 0.2m, in the top of the pipe 0.4m range can not be tamped with tamping machine.
(4) The backfill soil used in each part of the groove, the best compaction degree (%) should be according to the designrequirements or according to the requirements of CECSI22:2001 technical regulations.