3. PE irrigation pipe:

PE irrigation pipe is a kind of polyethylene pipe, which is connected by electrothermal melting method. The strength of the joint is higher than that of the pipe body.

(1) Characteristics of agricultural irrigation pipes:
① Reliable connection: The electric melting method is used to connect the pipeline system, and the strength of the joint is higher than that of the pipeline body.
② Good low temperature impact resistance: In winter construction, there will be no pipe brittle crack due to the good impact resistance of materials.
③ Good stress cracking resistance: With low notch sensitivity, high shear strength and excellent scratch resistance, environmental stress cracking resistance is also very outstanding.
④ Good chemical corrosion resistance: The pipeline can withstand the corrosion of a variety of chemical media, and the chemical substances in the soil will not cause any degradation to the pipeline.
⑤ Aging resistance and long service life.
⑥ Good wear resistance: The wear resistance comparison test of pipeline and steel pipe shows that the wear resistance of pipeline is four times of that of steel pipes.
⑦ Good flexibility: the flexibility of the pipeline makes it easy to bend. it can bypass obstacles by changing the direction of the pipeline in engineering.
⑧ The flow resistance is small. It is easy to carry.
⑨ A variety of new construction methods: In addition to the traditional excavation method, a variety of new trenchless technologies can be used, such as pipe jacking, directional drilling, lining and pipe cracking.

(2) Uses:
1. It is widely used in water supply and drainage engineering in urban and rural areas.
2. It is suitable for field irrigation of various types of irrigation areas.

4. PVC irrigation pipe:

(1) PVC irrigation pipe has excellent acid resistance, alkali resistance and corrosion resistance, which is very suitable for chemical industry. The wall surface of PVC irrigation pipe is smooth. The fluid resistance is small, and its roughness coefficient is only 0.009, which is lower than other pipes. Under the same flow rate, the pipe diameter can be reduced. The water pressure resistance, external pressure resistance and impact resistance of PVC irrigation pipes are very high, which is suitable for piping engineering under various conditions. It is cheap and used widely.
(2) PVC irrigation pipe can well follow the growth process of crops to realize modern irrigation. The water consumption of irrigation can be selected according to the specific moisture content of crops and soil.
(3) PVC irrigation pipe is the most absolutely can be based on the characteristics of the current kweather to achieve accurate water supply and fertilizer to the root of crops irrigation techniques. This can reduce the manual work.
(4) PVC irrigation pipe can transport more reasonable irrigation water consumption according to the growth needs of crops, which can ensure more timely and appropriate irrigation of crops and lay a solid foundation for improving the yield of crops.
(5) Irrigation pipes are widely used in urban and rural indoor and outdoor water supply, rural water improvement, farmland irrigation, brine transmission pipeline of salt and chemical industry, water conveyance of aquaculture industry, mine ventilation, water supply and drainage, landscaping sprinkler irrigation and other large and small projects.