1, PE gas pipe
(1) Reliable connection: The polyethylene pipe system is connected by electric hot melt method, and the strength of the joint is higher than the strength of the pipe body.
(2) Good low temperature impact resistance: The low temperature embrittlement temperature of polyethylene is extremely low, and it can be safely used in the temperature range of -60-60 °C. In winter construction, due to the good impact resistance of the material, the tube will not be brittle.
(3) Good resistance to stress cracking: HDPE has low notch sensitivity, high shear strength and excellent scratch resistance, and environmental stress cracking resistance is also outstanding.
(4) Good chemical resistance: HDPE pipelines can withstand the corrosion of a variety of chemical media, and the chemicals present in the soil will not cause any degradation to the pipeline. Polyethylene is an electrical insulator and therefore does not rot, rust or electrochemically corrode; it also does not promote the growth of algae, bacteria or fungi.
(5) Anti-aging, long service life: Polyethylene pipes containing 2-2.5% of uniformly distributed carbon black can be stored or used outdoors for 50 years without being damaged by ultraviolet radiation.
(6) Good wear resistance: The comparison of wear resistance of HDPE pipe and steel pipe shows that the wear resistance of HDPE pipe is 4 times that of steel pipe. In the field of mud transport, HDPE pipes have better wear resistance than steel pipes, which means HDPE pipes have a longer service life and better economy.
(7) Good flexibility: The flexibility of the HDPE pipe makes it easy to bend. In engineering, the obstacle can be bypassed by changing the direction of the pipe. In many cases, the flexibility of the pipe can reduce the amount of pipe and reduce the installation cost.
(8) Convenient handling: HDPE pipes are lighter than concrete pipes, galvanized pipes and steel pipes. They are easy to handle and install. The lower manpower and equipment requirements mean that the installation cost of the project is greatly reduced.
(9) A variety of new construction methods: HDPE pipelines have a variety of construction techniques, in addition to the traditional excavation methods, a variety of new non-excavation techniques such as pipe jacking, directional drilling, liners, Construction by means of split pipes, etc., is the only option for some places that are not allowed to be excavated, so HDPE pipes are used more widely.
2. PE water supply pipe characteristics:
1. Long service life: Under normal conditions, the minimum service life is 50 years.
2, good sanitation: PE tube is non-toxic, does not contain heavy metal additives, does not scale, does not breed bacteria, and has solved the problem of secondary pollution of drinking water. It complies with the GB/T17219 safety evaluation standard and the relevant health safety evaluation regulations of the Ministry of Health.
3, can withstand a variety of chemical media corrosion: no electrochemical corrosion.
4. The inner wall is smooth, the friction coefficient is extremely low, the passing ability of the medium is correspondingly improved and the wear resistance is excellent.
5, good flexibility, high impact strength, resistant to strong earthquakes, distortion.
6, light weight, convenient transportation and installation.
7. The unique fused connection and hot-melt butt joint and hot-melt socket connection technology make the interface strength high and the pipe body ensure the safety and reliability of the interface.
8. The welding process is simple, the construction is convenient, and the comprehensive construction cost is low.
9, PE environmental health water supply pipe dn20~dn90 is blue, dn110 is blue or black with blue line, other colors need to be customized, the color of the accessory corresponds to the color of the pipe.
10. Low water flow resistance: The HDPE pipe has a smooth inner surface with a Manning coefficient of 0.009. The smooth performance and non-adhesive properties ensure that the HDPE pipe has a higher conveying capacity than conventional pipes, while also reducing the pressure loss and water consumption of the pipe.
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