Core performance advantages of steel skeleton polyethylene composite pipe
As a composite pipe that takes into account both the pressure-bearing properties of steel pipes and the corrosion resistance of polyethylene, the pressure-bearing capacity of steel skeleton polyethylene composite pipes can reach 2-3 times that of ordinary PE water supply pipes, and the long-term use temperature range is between -20 ° C and 60 ° C. It is suitable for the four-season temperature difference in Hubei, and has excellent acid and alkali corrosion resistance. It will not cause rust and leakage problems like ordinary steel pipes. The normal buried service life can reach more than 50 years. The later operation and maintenance cost is much lower than that of traditional pipes. It is suitable for use in most areas of Hubei with high groundwater level and acid and alkali soil.
The advantages of engineering selection and adaptation of local direct supply
Hubei local direct supply of steel skeleton polyethylene composite pipes can be matched according to different engineering scenarios. The diameter covers the full range of DN50 to DN630, and the pressure bearing grade is optional from 1.0MPa to 2.5MPa. It is suitable for municipal water supply and drainage, chemical media transportation, farmland irrigation, oil and gas transmission and other scenarios. Compared with foreign procurement, local direct supply can greatly shorten the distribution cycle, and the supply adjustment is flexible. It can also be delivered in batches according to the project progress, reducing the stacking pressure of construction site pipes and reducing storage losses. When selecting the type, the products corresponding to the ring stiffness and pressure bearing grade can be selected according to the buried depth and the properties of the conveying medium. There is no need to blindly select high parameters to cause cost waste.
Key points to pay attention to in standard construction operations
Before construction, it is necessary to clean up the oil stains and impurities at the pipe interface in advance, and strictly control the temperature and butt pressure during hot melt welding to avoid virtual welding and leakage welding problems. When laying in the ground, a 10-15cm thick fine sand cushion should be laid at the bottom of the pipe to avoid damage caused by sharp stones and construction waste scratching the outer wall of the pipe. Hubei area is rainy, and during construction in the rainy season, it is necessary to do a good job of foundation pit drainage to avoid the floating displacement of the pipe due to water accumulation in the foundation pit. When backfilling, it is necessary to layer and tamp to avoid uneven deformation of the pipeline.
