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Plastic HDPE conduit is a type of non-metallic ducting used for underground cabling. It is made from high-density polyethylene, which is a thermoplastic material. The conduits protect cables from harsh weather conditions, external impacts, or chemicals. They are used in various applications, including telecommunications, fiber optic networks, and electrical installations.
The conduits are long-lasting, lightweight, and flexible. They are also immune to corrosion, making them ideal for underground installation. HDPE conduits come in different sizes, shapes, and colors, depending on the application. Below are the types of plastic HDPE conduits:
Spiral-Wound HDPE Conduit:
The spiral-wound HDPE conduit is made by winding a strip of plastic conduit in a spiral form. It is then inserted into the conduit mandrel and filled with liquid plastic. The conduit is then cured to create a solid duct. It is lightweight and flexible, making it easy to install in different areas. The conduits are commonly used for power cables, telecommunications, and drainage pipes.
Double Wall Corrugated HDPE Conduit:
This conduit has an inner smooth wall and an outer corrugated wall. The double-wall structure makes the conduit strong and rigid. It is also lightweight, flexible, and resistant to impact. The conduit is ideal for applications that require high-pressure drainage. It is used for telecommunications, power cables, and stormwater drainage.
Single Wall Corrugated HDPE Conduit:
The conduit only has one corrugated outer wall. Its design makes it easy to pull the cables inside. It is also economical since it requires less material to manufacture. The conduit is used in telecommunications, power cables, and cable television networks.
HDPE Conduit:
The conduits are manufactured with recycled materials. They are produced with the same techniques as virgin HDPE conduits. Recycled HDPE conduits are cheaper than other conduits. They are also lightweight and resistant to impact. The conduits are used for telecommunications, water drainage, and electrical installations.
Solid Wall HDPE Conduit:
This conduit has a solid wall construction. It is thick, durable, and provides good protection against external impacts. The solid-wall conduit is immune to chemicals and corrosion. It is used for high-pressure applications, telecommunications, electrical wiring, and drainage.
Corrosion Resistance:
HDPE conduit pipes are known for their durability. They can last for up to 50 years without needing to be replaced. These pipes are strong and do not rust, even though they are exposed to water, sunlight, or chemicals. This happens because HDPE pipes are made from plastic, which is not affected by water, sunlight, or chemicals. Their ability to resist damage or rust means that they will continue to work well for a long time and that the people installing electricity or telecom lines in new places won't have to worry about the pipes getting damaged or having to be replaced.
Lightweight and Easy to Handle:
HDPE conduit pipes are made from plastic, which is lighter than metal. This makes the pipes easier to move from one location to another. Because they are lighter, fewer people are needed to carry them, which reduces labor costs. Their lightness also makes them easy to install in different places. When pipes are easy to install, it means projects can be finished quickly, and people can start using the new electricity or telecom lines.
Protection for Cables:
HDPE conduit pipes are mainly used to protect electrical cables or telecom lines. These pipes shield the cables from being cut, damaged, or crushed from rocks, dirt, or other materials. Without conduits, cables buried underground would be exposed and could easily be cut or damaged by everyday things like rocks, dirt from digging, or even animals. The conduit acts as a safe tunnel for the cables, allowing them to be safely buried underground so they last longer.
Joint and Coupling System:
HDPE conduit has special ways to connect different pipes together called joints and couplings. They allow the installation of longer cable systems that go through many different areas. The joints and couplings also make sure the conduits fit together tightly so that dirt or water can't get inside. This keeps the cables protected. Because the joints and couplings allow for secure and seamless connections, they enable the pipes to be installed quickly and accurately.
Electrofusion and Butt Fusion Welding:
There are two main ways to connect HDPE conduit pipes: electrofusion and butt fusion welding. In electrofusion, special fittings with wires inside are placed on the two pipes. Electricity is sent through the wires, which heats up the fitting and melts both pipes together. They become one solid piece that won't come apart. In butt fusion, the ends of the two pipes are heated until they are soft. Then, they are pushed together to fuse.
HDPE conduits are widely used in various industries because of their robustness, durability, and versatility. Some of the common application scenarios include:
There are several factors that must be considered when choosing plastic conduits for cables. These factors are as follows:
Conduit Material
HDPE conduits are usually made from high-density polyethylene plastic, which is known for its lightweight, flexible, and durable properties. This material is suitable for underground installations. However, there are other plastic conduit materials, such as PVC, which are more affordable and easier to install. They are used mainly for above-ground and indoor applications.
Conduit Size
The size of the conduit will affect the size of the cables that can be installed. Larger conduits will accommodate more significant cables and multiple cables, while smaller conduits are suitable for smaller cable sizes and individual cables. Cables' type and number will be installed, as well as their size and capacity will help to determine the appropriate conduit size.
Conduit Thickness
The thickness of the conduit wall is also known as the wall thickness. It is critical to ensure the conduits' durability and capability. Thicker walls provide more excellent protection to cables, especially in areas where there is high impact or pressure. Wall thickness relates to the material used in making the conduit. HDPE conduits have a high-density wall thickness, while PVC conduits have a thin wall.
Temperature Rating
Plastics have different temperature ratings. It is essential to know the maximum and minimum temperature levels of the environment where the conduit will be installed. This ensures that the right plastic conduit is chosen. Temperature ratings show the suitability of the conduit material to different temperature levels. PVC conduits are suitable for environments with low temperatures, while HDPE conduits can withstand high temperatures.
Conduit Color
The color of the conduit is essential for cable identification. Different colors signify different types of cables. The color also determines the HDPE conduit pipe's visibility, especially when installed underground. Black conduits pipes are widely used because they are UV resistant. However, other color black, orange, blue, green, yellow, and others are available.
Conduit Accessories
Accessories are parts used during the installation process. They include fittings, junction boxes, and solvent cement. Proper installation of conduits with accessories ensures the protection and security of the cables.
Q1: Is it easy to install HDPE conduits?
A1: Yes, installations are straightforward. Techniques like electro-fusion welding, butt fusion welding, and socket fusion are commonly used. They create a jointing system that is leak-proof, safe, and secure.
Q2: What are the types of hdpe conduits?
A2: There are several types, including:
Q3: What are the applications of plastic conduits?
A3: Conduits are used in various industries and applications, including:
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