Introduction
The main uses of HDPE pipes include municipal engineering water supply systems, indoor water supply systems of buildings, outdoor buried water supply systems and residential areas, buried water supply systems in factory areas, old pipeline repairs, water treatment engineering pipeline systems, gardens, irrigation and industrial water pipes in other fields.
What is HDPE pipe used for
1. Urban water supply system: HDPE Water Supply Pipe has excellent corrosion resistance and aging resistance and can maintain good pipeline performance for a long time, so it is often used in urban tap water pipeline systems.
2. Drainage systems, HDPE pipe fittings are widely used in water supply and drainage systems, such as in buildings, industrial plants, municipal engineering, and other fields for drainage pipeline systems.
3. Gas transmission, HDPE Gas pipe is also widely used in gas transmission systems. Its excellent pressure resistance and corrosion resistance make it an ideal choice for gas transmission. HDPE pipe fittings have been widely used in the construction of urban gas transmission pipeline networks.
4. Agricultural irrigation, HDPE pipe fittings also play an important role in agricultural irrigation systems. Its weather resistance and wear resistance can meet the long-term stable operation requirements of agricultural irrigation systems for pipelines.
5. Mining engineering. HDPE pipe fittings are also widely used in mining engineering. For example, in tailings discharge, mine drainage, etc., Mining Pipe can effectively meets the requirements of mining engineering for pipeline materials.
6. Floor heating system: HDPE pipes are also widely used in low-temperature floor radiant heating systems. Its good thermal insulation performance and stable conductivity make the floor heating system run more efficiently and provide users with a comfortable living environment.
7. Dredging Industry: In dredging projects, such as the cleaning of rivers, lakes, and oceans, a large amount of silt and sediment needs to be sucked out and transported to other places. HDPE pipes can be used as mud discharge pipes because they have excellent corrosion resistance, wear resistance, and aging resistance, and can withstand high pressure and friction during transportation, ensuring smooth and efficient mud discharge.
Raw Materials
HDPE is a thermoplastic made from petroleum. The term “thermoplastic” means that it can be melted and reshaped. This is different from thermosets which cannot be melted again. This is sustainable for HDPE, it can be welded, but because it can melt at high temperatures, there is still a disadvantage
What external environments are HDPE pipes used in?
HDPE pipe is one of the most flexible piping solutions, equally suitable for above-ground, underground, underwater, or floating conditions. It can be used on uneven surfaces and can be bent to a certain extent without connection.
Underground installation is trenchless, and it can be connected to directional drilling equipment. Better than most traditional pipes.
Can handle high pressure, but not high temperature, softening at around 120 degrees Celsius. Polyethylene has been used in the oil and gas industry for a long time and has the lowest frequency of repairs per kilometer that other pipes can replace.
How HDPE pipe behaves in fire
We mentioned above that this material softens at 120°C, which can cause the pipe to deform and lose structural integrity. Many factors affect whether it causes a leak.
The duration of the fire is important, if it is a grass fire, the flames will die out like the grass. The thickness of the pipe makes a difference, the outside wall will be hotter than the inside, allowing the fluid flow to cool it to some extent.
HDPE pipe melts at around 200°C and self-ignites at around 400°C.
