Type of flexible plastic pipe

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HDPE pipe is a type of flexible plastic pipe used to transfer fluids and gases. It is often employed for replacing aging concrete or steel main pipelines. Constructed from the thermoplastic HDPE (high-density polyethylene), it has low permeability and robust molecular bonding, making it suitable for high-pressure pipelines. HDPE pipe is often used for water mains, gas mains,[1] sewer mains, slurry transfer lines, rural irrigation, fire-suppression system supply lines, electrical and communication conduits, and stormwater and drainage pipes.[2][3]

Attributes

HDPE is resistant to many environmental factors and has applications where cheap but durable fluid piping systems are required.

HDPE pipe can be joined by butt welding, electrofusion welding, socket welding, or extrusion welding. These joints heat the pipe during the joining process to create a completely homogeneous joint without the need for additional seals or jointing compounds, reducing the likelihood of failure or negative environmental effects. HDPE is less likely than PVC pipe to have problems with root intrusion and provides integrity for the pipeline, even when installed in unstable soils.[citation needed]

Due to the fusion welding system, HDPE pipe does not need any additional supports around joints. This also allows for safer excavation close to the pipeline in the future, which is particularly important for high-pressure gas pipelines. HDPE pipe is highly durable and flexible even at lower ambient temperatures, enabling bends in the pipe system to be created with relative ease. Due to its high impact resistance and flexibility, HDPE pipe is well-suited for installation in dynamic soils, including those in earthquake-prone areas. HDPE has been considered to be cost-effective due to its versatility in installation and reduced need for maintenance.[citation needed]

Because food-grade polyethylene virgin material is used to fabricate HDPE pipes, they are safe for the transfer of drinking water. HDPE is resistant to many chemicals, facilitating its use in process plants or in corrosive or acidic environments without use of protective coatings or galvanization. As HDPE has a lower thermal conductivity than many metals it can maintain more uniform temperatures than metal pipes when carrying fluids, which reduces the need for insulation around a pipeline.[4]

Manufacturing

To make lengths of HDPE pipe, polyethylene raw material is dried, heated to ~180 °C (356 °F), and extruded through a die.

Polyethylene pipe is usually black due to the addition of 3-5% of carbon black to the clear polyethylene material, which adds UV light resistance to the finished pipe. To create striped HDPE pipe a different die is used, containing small channels that the colored material runs through just before it is pushed through the die. Co-extruded, or co-ex HDPE pipe has an extra 'skin' of color around the black HDPE pipe, allowing the pipe to be colored on the outside for the identification of thermal cooling requirements.

After coming through the die the pipe is cooled by submerging in or spraying with water. The rate of cooling is carefully controlled to avoid deformation of the extruded pipe. Once cooled, a laser or powder printer prints the size, type, date, and manufacturer's name on the side of the pipe. It is then cut by a saw cutter or coiled into longer lengths on a coiler.

Longevity

HDPE piping is estimated to last 50 years. However, technical white papers written by the Plastics Industry Pipe Association assert that HDPE pipe systems can be reasonably expected to last up to, or over 100 years.[5]

References

HDPE PIPE PRODUCTION MACHINERY

Many of you have asked this question to yourself a lot of times, before thinking of setting pipe production. If so, this is the right post to read.

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HDPE pipe stands for the High-density polyethylene pipe, which is durable, flexi, strong and not heavy. When it is connected to each other HDPE pipe system does not give leakage due to its seamlessness. HDPE pipe has a long time use, due to its chemical and corrosion resistance, and it can be installed in trenches without any high-cost construction methods. General view of the pipes you may see below:

HDPE PIPE MANUFACTURING RAW MATERIALS

HDPE polyethylene appears in the form of granules packed in bags and transported to the HDPE pipe plants.

HDPE &#; High Density polyethylene is thermoplastic polymer. Here what it says in Wiki about the HDPE.

High-density polyethylene (HDPE) or polyethylene high-density (PEHD) is a thermoplastic polymer produced from the monomer ethylene. It is sometimes called &#;alkathene&#; or &#;polythene&#; when used for HDPE pipes.[1] With a high strength-to-density ratio, HDPE is used in the production of plastic bottles, corrosion-resistant piping, geomembranes and plastic lumber. HDPE is commonly recycled, and has the number &#;2&#; as its resin identification code.

In , the global HDPE market reached a volume of more than 30 million tons.[2]

So there is a lot of choice for the HDPE suppliers.

HDPE pipes are manufactured from raw materials like PE100, PE80, and PE63.

HDPE PIPE PRODUCTION EQUIPMENT

HDPE pipe manufacturing machine is the production equipment for the HDPE pipes.

It consists of:

SJ SERIES SINGLE SCREW EXTRUDER

If you want to learn more, please visit our website HDPE Pipe For Underground Water Supply.

SJ25/25 CO-EXTRUDER

EXTRUDER DIE

6/9M VACUUM CALIBRATION TANK

6/9M SPRAY COOLING TANK

HAUL-OFF MACHINE

PLANETARY CUTTER

STACKER.

Concerning the hdpe pipe manufacturing machine, Benk Machinery Co LTD can recommend high effective and low cost equipment and solutions for the HDPE pipe production machine. Our professionals will lead you from choosing equipment for the production of HDPE pipe production up to the setting up the production process and applying the efficient formulas for the HDPE pipe production process.

HDPE pipe manufacturing machine cost may vary according to the customer requirements such as capacity, type of production (normal speed, higher speed). We highly advice you contact us through any means call, , , for HDPE pipe manufacturing machine price. We will help you in each step of your starting HDPE pipe manufacturing process.

HDPE PIPE MANUFACTURING PROCESS FLOW CHART

HDPE pipe manufacturing process flow chart consists of several points, such as:

HDPE PIPE PRODUCTION QUANTITY

According to your market demand, you will make a small research to find out what is the quantity you need to produce for your market. It will be clear after learning the demand, what quantity of HDPE pipes are needed for a definite period of time. As from the above Wiki information, we may conclude that the production of HDPE pipes are increasing annually, the reason of high demand for the HDPE granules are increasing. In some parts of the there is high demand for the HDPE pipes so this will be a good business start.

HDPE PIPE PRODUCTION WASTE

Small pipe parts, wasted pipe chips and other pipe waste can be recycled 100%. In order to recycle HDPE pipe or other HDPE materials it necessary to crush into small fractions and pelletize in the granulators. For the granulators and technology information you may contact us, and this is also a big scale business which is really demanded in megapolises nowadays.

We will be happy to consult you on any aspect of the HDPE Pipe production process along with Equipment.

Do not hesitate to contact us 24/7.