First of all, let's take a brief look at hdpe drainage pipes. After PVC-U water supply pipe, HDPE drainage pipe has become the second largest plastic pipe in the world, which has chemical properties such as resistance to various acid and alkali corrosion, resistance to various organic solvents, and physical properties such as difficulty in crystallization. There are many specifications of HDPE drainage pipes, ranging from DN 16 to DN3 15, of which * * is classified as 18. The pressure level is 0.25Mpa? ~ 1.0Mpa, ***4. Moreover, from the cost analysis, the unit price of HDPE pipe is less than that of ductile iron pipe 1 1%, so HDPE is economical.
Now Bian Xiao focuses on the hot-melt connection of HDPE drainage pipes, which everyone should remember. Hot melt butt joint connection of HDPE pipes: firstly, put two PE pipes that need to be installed and connected on the fuser fixture at the same time? (The clamp can be replaced according to the pipe diameter to be installed), and the other end of each pipe is hoisted to the same level with the pipe support. The second is to cut the end faces of the pipes flat with an electric rotary cutting machine to ensure that the contact surfaces of the two pipes can be completely matched. Then raise the temperature of the electric heating plate to 210 C, put it between the end faces of two pipes, and operate the electro-hydraulic device to make the two end faces completely contact with the electric heating plate and heat it at the same time. Finally, after the heating meets the requirements, the heating plate is removed, and the hydraulic device is operated again, so that the end faces of the two melting pipes are fully butted, and the hydraulic device is locked to prevent rebound. Moreover, when heating, the pipe crimping thickness and docking time should strictly meet the requirements of material technology, generally referring to the technical parameters and specification requirements provided by the manufacturer.
After understanding the hot melt connection method of HDPE drainage pipe, let's understand its application. HDPE drainage pipes are mainly used in municipal engineering water supply systems, indoor water supply systems of buildings, outdoor buried water supply systems and residential quarters, factory buried water supply systems, old pipeline repair, water treatment engineering pipeline systems, garden industrial water pipes, irrigation and other fields.
Do you feel that the function of HDPE drainage pipe is widely used? And the steps of hot melt connection are also very simple. In fact, hot-melt connection is dangerous, so Bian Xiao suggested strengthening the skills and quality training of pipeline designers and constructors, which can not only improve the construction efficiency, avoid the trouble of rework, but also ensure the safety in the construction process. During hot-melt socket connection, the heating temperature should not be too high or too long, and it is better to control it at 2 10 10℃, otherwise, too much molten slurry will be extruded from the pipe fittings and the inner diameter of water will be reduced. In outdoor and direct sunlight places, Bian Xiao suggested taking precautions. Moreover, the performance of HDPE drainage pipe is very good, which is worth recommending widely.
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