Jointing of large bore PE pipes [PE]

Author(s) : Robert Lawrence, Mohana Murali

The paper covers the growth of the polyethylene pipe sector in the Middle East from the 90s to the present. The initial slow uptake was related to ignorance of the material properties from the end users through to designers and installers. Recently the Middle East has become a world leader in the use of ever larger...

Author(s) : Robert LeHunt

Nationally moderated and approved competency training Units and Qualifications have been established in Australia for plastics pipes within an overall Plastics Industry Training Package. Delivery of such Units over a 21 year period has contributed to a greater understanding of various plastics pipes materials,...

Author(s) : Luis Aguiar, Rafael Ortega, Robert J. Card

With the infrastructure aging and having to be extended beyond its useful life, the need for municipalities and governmental agencies to do more with less funding is even greater! As such, over the last several years, the use of HDPE for sliplining has increased in its use. Most recently, the use of HDPE for...

Author(s) : Thomas C. Pedersen, Robert R. Kwapisz

This paper presents rheological data on simple rigid PVC compositions lubricated paraffin wax, calcium stearate, and oxidized polyethylene wax. These three materials comprise the most widely used lubricant system for rigid PVC in North America. The influence of certain paraffin wax characteristics will be discussed....

Author(s) : Robert Eckert

New types of saddle fittings enable convenient and economic ways of installing branches or vents on PE pipes. In conjunction with a gate valve, branches can even be installed without disrupting service, by "hot tapping" the main pipe. In addition, pipes with localized damage such as excessively deep scratches or...

Author(s) : Robert J Lawrence

In the Middle East the environment is exceptionally aggressive for all pipe systems due to the high temperatures, the high groundwater table and the very saline soils. This obviously makes metallic pipes and cement based pipes high risk options but it also poses challenges for polyolefin (PO). In this paper the author...

Author(s) : Robert Torbin

The home building industry has been focused on keeping the price of new housing “affordable” to the majority of American consumers. This market mantra has, to some degree, affected the quality of new construction. In the area of piping technology, there has been a notable movement away from metallic piping systems...

Author(s) : Eckert

The use of plastic pipes has to date been limited to operating pressures of max 10 bar / 145 psi for gas supply and 16 bar / 230 psi (25bar / 360 psi) for water supply. Polyamide – the new high-performance material for gas pipes - and multi layer pipes with integrated reinforcement allows operating pressures to be...

Author(s) : Eckert

„No welding if media escapes”, “residual water problems” and “need for space” are phrases invariably used when repairs and integration to PE pipe systems is the topic of conversation. Quite rightly so, because clean fusion zone surfaces are an important prerequisite for a strong, homogenous PE fusion...

Author(s) : Eckert

Crosslinked polyethylene (PE-X) pipes, successfully used for decades in house installations and heating systems, have found a new and growing application in buried gas and water supply systems, in recent years. The reason for the renewed success of PE-X is due to its unsurpassed resistance to notches. The use of sand...

Author(s) : Eckert