HDPE High-Density Polyethylene Pipe Systems Welding Process




Abstract: Piping made from polyethylene is a cost effective solution for a broad range of piping problems in municipal, industrial, marine, mining, landfill, duct and agricultural applications. It has been tested and proven effective for above ground, surface, buried, sliplined, floating, and sub-surface marine applications. High-density polyethylene pipe (HDPE) can carry potable water, wastewater, slurries, chemicals, hazardous wastes, and compressed gases. Polyethylene is strong, extremely tough and very durable. Whether when looking for long service, trouble-free installation, flexibility, resistance to chemicals or a myriad of other features, high-density polyethylene pipe will meet all needed requirements. Considering the features of leak free. Corrosion, abrasion, and chemical resistance. Excellent flow characteristics. Lightweight, and flexible. A pipeline is as good as its weakest point. Accordingly it is not only important that quality pipes and components are used in a piping system, but also the methodology used to join the pipes and other components. Butt Fusion is the most important and widely used method of connection for HDPE pipes. It is a method of jointing pipe ends by way of heating and cooling under pressure, resulting in pipe joints as strong as the pipe itself. The principle of butt fusion is to heat the pipe ends to a designated temperature (200-220 C) under pressure for a specified amount of time, then the pipe ends are fused together under pressure for a period of time. This paper discusses the PE80 and PE100 grades of material for pipes of size 90mm and above of the same Standard Dimension Ratio (SDR) but fusion joining techniques.

Authors: Marai Khalifa, Taha Ased, and Abdulhafidh Abuajila

Keywords: HDPE High-Density Polyethylene, Welding Process, Standard Dimension Ratio (SDR), Visual and Dimensional Inspection (VDI), Piping System

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Page Count

6 pages


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