Polyethylene pipe: Polyethylene (PE) is a thermoplastic material produced from ethylene polymerization. Polyethylene pipes are produced through extrusion in different dimensions from½ inch to 63 inches. Polyethylene can be produced in various dimensions in the form of a coil or in a straight up to 40 feet long.
What Is the HDPE Pipe?
HDPE Pipe, Polyethylene (PE Pipe) are sorted by strength classified according to the intensity of the earlier technological developments. HDPE Pipe pressure classes that can be made between Pn4-Pn32 and the production of the desired diameter and size of HDPE pressure pipe system has undergone many tests in 1950, particularly in the carriage of drinking water. After the result of these tests of HDPE Pipe, if all reports are positive then it has no harmful effect on human life. One of today’s most widely used pipe is HDPE piping systems which is economical, easy in handling, efficient performance, easy method of coupling.
Technical Specifications of HDPE Pipe
| Specification | STANDARD | Unit | Value | |
| Intensity | ISO 1183 | gr/cm3 | ۰,۹۵ | |
| Melting flow rate (MFR) 190/5 | T 003 | gr/10 min | ۰,۲ – ۰,۴ | |
| Melting flow rate (MFR) 190/5 | T 005 | gr/10 min | ۰,۴ – ۰,۷ | |
Mechanical specifications |
Melting flow rate (MFR) 190/5 | T 010 | gr/10 min | ۰,۷ – ۱,۳ |
| Tensile stress (akma) | ISO 527 | Kg/cm2 | ۲۵۵ | |
| Elongation (creep) | ISO 527 | % | ۹ | |
| Elongation (break) | ISO 527 | % | >600 | |
| Modulus of Elasticity | ISO 527 | Kg/cm2 | ۱۱۲۱۶ | |
Thermal Specifications |
Softening Temperature | ISO 306 | °C | ۷۷ |
| Deflection Temperature | ISO 75 | °C | ۷۵ | |
| Coefficient of Thermal Expansion | DIN 53732 | ۱ / °C | ۰,۰۰۰۱۸ | |
| Thermal Conductivity (20 °C) | DIN 52612 | W / m °C | ۰٫۴ | |
| Flamibility | DIN 4102 | — | B2 | |
Electrical Specifications |
Specific Volume Resistance | VDE 0303 | Ohm.cm | >1016 |
| Dielectric coefficient | VDE 0303 | KV / mm | ۷۰ |
Raw Material of Polyethylene Pipe
Polyethylene Pipe, Pe 32 class is developed in 1950 with improving technology and low density. 3rd Generation PE 100 Polyethylene raw materials are used in drinking water pipelines, desalination plants, biological treatment plants, swimming pool piping, sea discharge lines, gravity flow water lines, gas stations , irrigation lines, compressed air lines, cooling-heating lines, pre-insulated sheathing for pipes. Because Low Density Polyethylene Pipe is economical and has high-performance in many areas, such as sewer lines has been a solution. (C2H4) has the general formula of crude oil of 97% polyethylene and is a thermoplastic polymer as shown. The production of raw materials, entirely depends on the availability and price of crude oil. Polyethylene density is divided into three main groups according to their crystalline structure percent.
• Low density polyethylene raw material (LDPE)
• Medium density polyethylene raw materials (MDPE)
• High density polyethylene raw materials (HDPE)
According to other types of raw materials as well as their field of high performance and long life due to the strength of economy most preferably 97% of the product which is used crude for the production of the polyethylene raw material. So, the production of polyethylene raw materials, the availability and the price depends entirely on crude oil. It also has many superior properties compared to other thermoplastic polyethylene. The main ones are
* HDPE pipe is resistant to weather conditions
* HDPE pipe High resistance to tearing and pressure
* HDPE pipe Despite high resistance to stress cracking
* HDPE Polyethylene Pipe -30 And -60 degree to strength
* High Density Polyethylene Pipe have corrosion resistance
* Easy and reliable assembly of HDPE Pipe
* In HDPE Pipes Lower level compared to metal pipe friction losses
* HDPE Pipes, Reduced flow noise
* Electrical full insulation, it is a good thermal insulation
* HDPE Pipes are non toxic.
* HDPE Pipe is suitable for radioactive waste.
