Papers
Plastic Pipes Conference Association # 2018 Las-Vegas
HU Fa, LI Yue, GAO Yuanjie, ZHE Dongmei, WEI Ruoqi
This paper expounds the development status of composite insulating pipe in the heating and chemical fields from the aspects of materials, structure and application. Combined with the relevant standards and technical requirements, the performance advantages and the key evaluation methods such as axial shear strength, insulation layer performance of composite insulating pipes are discussed.
In order to mitigate climate change, recent trends in building design include a lowcarbon emission approach, coupled with energy-saving initiatives. For the plastic pipe industry it is imperative to improve the heat transfer efficiency of the pipe network. Composite insulating plastic pipe has the advantage of corrosion resistance, low thermal conductivity and reliable connections. The application of composite insulating plastic plays an important role in the new and existing heating pipe networks, chemical transport, apartments and central air conditioning.
There are many types of composite insulating plastic pipes. Various plastic pipes are employed e.g., the service pipe could be PE-RT, PP-R, PEX-b or PVC. According to the different structure, it can be divided into the traditional three-layer composite structure and the new fiber reinforced flexible composite structure. According to the different forms of bonding, there are bonded pipe systems and non-bonded pipe systems.
This paper expounds the development status of composite insulating pipe in the heating and chemical fields from the aspects of materials, structure and application. Combined with the relevant standards and technical requirements, the performance advantages and the key evaluation methods such as axial shear strength, insulation layer performance of composite insulating pipes are discussed.
Related papers
Author(s) : Ajay Taraiya, Peter Degenhart, Mark Boerakker
In PPXX, a technology was presented for the first time that could bi-axially orient polyolefin pipes. With this technology, it is possible to prepare pipes that have a performance far beyond the standard ones. One approach to achieving this performance is via a continuous in-line process. To optimize the in-line...
Author(s) : Olivera Bilic, Vivek Rohatgi, Brody Peterson, David Hukill
Demand for conduit pipe is expected to surge globally due to rapid industrialization and urbanization in residential and commercial sectors. Just in the U.S., according to Market Research analysis, expected growth of the plastic conduit pipe market is at a CAGR of more than 5% over the next ten years. In response to...
Author(s) : Yi Zhong, Qianshi Ma, Haihua Yu
BSTRACT The residential district adopts central heating for low temperature radiators system. Due to the disrepair of the secondary heating pipe network that pipe from heat exchange station to user entrance, the running, leaking, dripping and leakage are serious, and the accidents occur frequently. The heat...
Author(s) : Amster Howard
This paper explores the use of a composite soil stiffness as a valuable design tool to consider when a pipeline traverses through poor soil conditions. Thermoplastic pipe are flexible pipe and require good soil support at the sides of the pipe to minimize deflection. However, sometimes the trench walls are weak soils...
Author(s) : James F. Mason, Akshay Ponda, Hermann van Laak, Tobias Bauer
The long-term strength of unplasticized polyamide 12 (PA-U12) has been characterized using standard methods for plastic pressure pipe during the qualification process for use in buried piping systems for natural gas delivery operating at low ambient temperatures, usually less than 20 to 30°C at pressures...
Author(s) : Sunwoong Choi, Robert Stakenborghs , Pyeongan Lee, Byoungho Choi
This work developed a hydro-axial tension (HAT) test as a whole pipe axial tensile test and applied to evaluate the polyethylene (PE) pipe and fusion joints containing various flaws. HAT test was designed to utilize hydrostatic pressure to cause axial tension in pipes. The experimental and numerical analysis was...
Author(s) : Jacob John, Suresh Shenoy, Patrik Roseen
Cross-linked polyethylene (PEX) pipes continue to gain popularity in plumbing and indoor climate applications around the globe. This study focuses on increasing the sustainability of PEX pipes by utilizing recycled PEX and production waste streams into PEX production. Different methods available for recycling and the...
Author(s) : Aisha Khaleel, Suleyman Deveci, Sulistiyanto Nugroho, Fatima AlHameli
The use of polyethylene pipes in transportation networks of pressurized water and gas have shown superb performance over the history. High density, high-molecular-weight, and bi-modal polyethylene materials, known as PE80, PE100 and PE100RC, have successfully served the market for many years in standard applications....
Author(s) : Mitsuaki TOKIYOSHI, Yutaka SAWADA, Yasuhiko OTSUKI, Kensei INOUE, Takashi KURIYAMA, Toshinori KAWABATA
Polyethylene reinforced with short glass fibres (PE-sGF) pipe, manufactured by combining short fiber glass (sGF) with PE100 as a reinforcing material, has a higher pipe rigidity in the pipe circumferential direction than that of PE100 because of the reinforcing effect of the reinforcing material and a performance...
Author(s) : Kevin White, Shad Sargand
The current standard of practice for the installation of agricultural mains is in accordance with ASTM F449, Standard Practice for Subsurface Installation of Corrugated Polyethylene Pipe for Agricultural Drainage or Water Table Control. ASTM F449 has several limitations. Currently, the allowable maximum height of...
Author(s) : Tobias Johnsen, Ole Grøndahl Hansen
With a growing global population that will primarily settle in urban areas, more and more agricultural land will be converted into dwellings, roads etc. As the demand for food in 2050 will be 60% greater than today, a conflict between Sustainable Development Goals 2 (Zero Hunger) and 11 (Sustainable Cities and...
Author(s) : Zhanjie Wang, Jing Guo, Lin Wang
In the past two years, the Chinese plastic pipe industry has faced a complex and changeable development situation. The domestic economy has faced the pressure of demand shrinkage, supply impact, and expected weakness, and the market has changed greatly. The impact of the Covid-19 and the influence of many unfavorable...
Author(s) : Chantz Denowh, Robert Stakenborghs, Liang Yu
The use of spoolable reinforced thermoplastic pipe (RTP) technologies in the onshore oil and gas industry has expanded significantly over the past decade. It is anticipated that interest will only continue to grow as oil and gas operators transition to transporting alternative fuels such as hydrogen and carbon...
Author(s) : Amster Howard
This paper focuses on the confusing plethora of choices that a design engineer in the United States faces when selecting installation instructions for buried pressure thermoplastic pipelines. For polyethylene pipe, the decision is between AWWA Manual M55, ASTM D2774, ASTM F1668, the PPI Handbook, MAB-3, PE Field...
Author(s) : Chris Greggs
Much has been done to improve the quality and efficiency of HDPE pipe installations over the years. Now, a totally new concept for fusion where the machine meets the pipe where it lays to improve worksite safety, boost jobsite efficiency, and minimize the amount of time spent between fusions has been developed. This...
Author(s) : Chris Ziu, Deanne Hughes, Steve Sandstrum
Plastic pipe is an environmentally responsible choice for a broad array of piping applications. The exceptional chemical/corrosion resistance, superior joining techniques and overall durability of these piping products have resulted in industry-leading life-cycle analyses (LCA’s) in the applications for which they...
Author(s) : Dr. Jan Hendrik Beckmann
For several decades now plastic pipes have been measured in-line [1]. However, currently used technologies also challenge the user in many ways, either by elaborate conversion work on the system for dimensional changes or by frequent calibration procedures [2] or in some cases the use of water as coupling medium [3]....
Author(s) : Norbert Jansen, Andrew Wedgner, Rainer Kloth
PE100+ Association(client) has sponsored a technical investigation to define the permeation rate of hydrogen through polyethylene pipes at an external expert laboratory. Four different types of PE pipe materials in the same pipe size and SDR17 have been evaluated at 3 different target temperatures 8°C, 14°C and 20°C,...
Author(s) : Suleyman Deveci, Aisha Khaleel, Birkan Eryigit
Short and long term hydrostatic pressure resistance of plastic pipes are measured according to ISO 1167, by applying an internal pressure that is calculated for the target hoop stress considering outer diameter and wall thickness of the pipe samples. Due to the nature of the extrusion process, wall thickness...
Author(s) : Kevin White, Shad Sargand
Re-rounding is a technique for remediating excess deflection in corrugated highdensity polyethylene (HDPE) pipe meeting AASHTO M-294 with diameters between 12" and 60" using a pneumatic device vibrating from within the pipe and pushing against the inside crown and inverted to redistribute the surrounding backfill and...
Members of the Association
