Hdpe pipe selection strategy hdpe pipe use precautions
The wear resistance of HDPE pipe is the crown of plastic, which is the most eye-catching. The higher the molecular weight, the more resistant the material is, even to many metal materials. The service life is 4-6 times that of steel pipes under strong corrosion and high wear conditions, 9 times that of ordinary polyethylene; and the conveying efficiency is increased by 20%.
Flame retardant and antistatic properties are good and meet the standard requirements. The service life of the well is more than 20 years, the economic benefit is remarkable, the impact resistance, wear resistance and double resistance are remarkable. Because of its characteristics of wear resistance, acid and corrosion resistance, high temperature resistance and high pressure resistance, it has gradually replaced the traditional pipe materials such as steel pipes and cement pipes in the market, especially because the pipe is light in weight, easy to install and move, and is a new material. The first choice.
Hdpe pipe selection strategy hdpe pipe use precautions
Special attention should be paid to the selection of raw materials for plastic pipes. There are thousands of grades of polyethylene raw materials, and there are as many as a few thousand yuan per ton of raw materials on the market. The products produced from such raw materials cannot be constructed, otherwise the rework loss will be huge. Pipeline manufacturers should be based on formal professional manufacturers. When purchasing PE pipes, they should inspect the manufacturers on the spot to see if they have production capacity.
Special attention should be paid to the safe spacing of thermal heating during construction, and it should not be exposed to the sunlight in the air, and it is sensitive to chemicals to prevent leakage of sewage pipes.
Hdpe pipe use precautions
1. Outdoor open-air laying, where there is sunlight, it is recommended to do the sheltering measures. 2. Buried HDPE water supply pipeline. The pipeline with DN≤110 can be installed in the form of a serpentine in summer. The pipeline with DN≥110 has enough soil. Resistance, can resist thermal stress, no need to reserve pipe length; in winter, there is no need to reserve pipe length;
3. When the HDPE pipeline is installed, if the operation space is too small (such as: pipeline wells, construction inside the ceiling, etc.), the fused connection method should be adopted;
4. When the hot-melt socket is connected, the heating temperature should not be too high or too long, and the temperature should be controlled at 210±10°C. Otherwise, the molten material extruded in the fitting will be excessive, and the inner diameter of the water will be reduced. Or the pipe interface should be clean, otherwise it will cause the socket to be leaked; at the same time, it is necessary to control the angle and direction of the pipe to avoid rework;
5. When the hot-melt butt connection is required, the voltage is required to be between 200 and 220V. If the voltage is too high, the temperature of the heating plate will be too high. If the voltage is too low, the docking machine will not work normally; the interface should be aligned when docking, otherwise The joint area is not enough, the weld strength is not enough, and the curling is not correct; when the heating plate is heated, the pipe joint is not cleaned, or the heating plate has oil, sand and other impurities, which will cause the interface to be leaked and drained; heating time To be controlled, the heating time is short, and the heat absorption time of the pipe is not enough, which will cause the welding bead to be too small, and the heating time is too long, which may cause the welding bead to be too large, and may form a virtual welding. 
Editor in charge: Wang Zhen
A hydraulic valve is a device used to control the flow and pressure of hydraulic fluid in a hydraulic system. It is typically made up of a valve body, which contains the necessary ports and passages for fluid flow, and a valve spool or poppet, which is responsible for regulating the flow of fluid.
Hydraulic valves can be classified into various types based on their function and design. Some common types include:
1. Directional control valves: These valves control the direction of fluid flow in a hydraulic system. They typically have multiple ports and can be used to control the movement of hydraulic cylinders or motors.
2. Pressure control valves: These valves regulate the pressure of the hydraulic fluid in a system. They can be used to maintain a specific pressure level or limit the maximum pressure.
3. Flow control valves: These valves control the rate of fluid flow in a hydraulic system. They can be used to adjust the speed of hydraulic cylinders or control the flow to different actuators.
4. Check valves: These valves allow fluid flow in one direction while preventing it from flowing back in the opposite direction. They are commonly used to maintain pressure in hydraulic systems or prevent backflow.
Hydraulic valves are essential components in hydraulic systems, as they enable precise control and efficient operation. They are commonly used in various industries, including manufacturing, construction, agriculture, and automotive.
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