Definition of PVC low - pressure irrigation pipe PVC low - pressure irrigation pipe is a type of pipe made from polyvinyl chloride (PVC) resin, along with various additives such as stabilizers, lubricants, and fillers. These pipes are specifically designed for use in irrigation systems where relatively low water pressure is required.
PVC irrigation pipe, is called low-pressure irrigation rigid polyvinyl chloride (PVC-U) pipe. It is made of PVC resin powder as the main raw material, with appropriate amount of additives added, and processed by mixing, extrusion, sizing, cutting and expansion.
PVC irrigation pipe is mainly used to transport water from the water source to the field. Because the irrigation pressure is relatively small (0.25-0.63MPa), it is called low-pressure irrigation pipe.
1. What are the characteristics of PVC irrigation pipe?
The characteristics of PVC low-pressure irrigation pipes are generally similar to those of common PVC water supply and drainage pipes, which can be summarized as follows:
● Smooth inner wall, small water flow resistance, reduced head loss, and water delivery capacity increased by about 20% compared with cast iron pipes and about 40% compared with concrete pipes;
● Good toughness, high strength, high tensile strength, good mechanical properties, high hardness, and strong wear resistance;
● Corrosion resistance can resist erosion by chemicals such as acids, alkalis, and salts, and is suitable for various soil and water conditions;
● Lightweight and easy to install, light weight, convenient shipping, specific gravity is about 1/5 of steel cast iron pipes, 1/2 of concrete, saving transportation costs;
● Precision irrigation can be carried out according to crop growth and soil moisture to avoid water waste;
● Low cost of raw materials and low production costs, economical and affordable, suitable for large-scale use.
2. Specifications and pressures of PVC irrigation pipes?
According to the national standard, the pressure of PVC irrigation pipes is divided into five types: 0.25MPa, 0.32MPa, 0.4MPa, 0.5MPa, and 0.63MPa. The pressure bearing capacity is relatively small, which is also the main difference between PVC irrigation pipes and PVC water supply and drainage pipes.
(Due to different uses, PVC drainage pipes generally do not involve the concept of pressure size; PVC water supply pipes have higher pressure requirements, ranging from 0.63MPa to 2.5Mpa.)
According to Chinese standards, the specifications of PVC low-pressure irrigation pipes start from dn75 (in addition: PVC drainage pipes generally start from dn32, and PVC water supply pipes start from dn20)
IV. What are the implementation standards for PVC irrigation pipes?
GB/T 13664-2023 "Rigid Polyvinyl Chloride (PVC-U) Pipes for Low-Pressure Irrigation"
V. How to connect PVC irrigation pipes?
● Adhesive connection (flat expansion): expand one end of the pipe into a smooth socket, and connect it with the other end by applying glue.
● Socket-and-spigot rubber ring connection (R expansion) expands one end of the pipe into an R-shaped socket with an annular sealing groove. After the other end is inserted, it forms a seal by close contact with the sealing groove to ensure the firmness and sealing of the pipe connection.
6. What are the application areas of PVC irrigation pipes?
● Agricultural irrigation: suitable for irrigation of farmland, orchards and vegetables, especially irrigation of field crops in flat and gently sloping areas, such as wheat, corn, rice, etc.;
● Gardening and landscape irrigation: irrigation systems suitable for horticultural planting such as flowers, lawns, and nurseries.
● Greenhouse irrigation: suitable for irrigation of flowers, vegetables, seedlings, etc. in greenhouses.
● Water-saving irrigation projects: PVC low-pressure irrigation pipes play an important role in water-saving irrigation projects in areas with scarce water resources.
● Animal husbandry irrigation: suitable for irrigation needs in animal husbandry production such as pastures and feed bases.
That’s basically all about the introduction of PVC low-pressure irrigation pipes, including characteristics, specifications and pressures, connection methods, application range, etc., which is relatively comprehensive. Some people also say that PVC irrigation pipes are non-standard PVC water supply pipes with lower pressure and inferior materials, which seems to be the case.
One-stop supply of various ISO ASTM PVC/PPR/HDPE water supply Drain Rain pipe and fittings: flange/valve/elbow/tee/reducer Drinking water, agriculture, industry, chemical industry
Whatsapp:+86 18388080854 Mail:kevinchen940205@gmail.com