Papers
Plastic Pipes Conference Association # 2016 Berlin
Marco Michelotti, Raffaella Sartini
Polyolefins piping systems have greatly evolved over the last decade through both material innovation and extrusion technologies which have undergone significant advancement. Though high density polyethylene and polypropylene pipes are currently estimated as the best solution for a safe fluid supply, various compounds differing in macromolecular structure or additives composition are now available to overcome previous restrictions.
Multilayer extrusion technologies and modified grades of polyethylene having specific severe requirements for resistance to slow crack growth focused for pipe laying with alternative techniques, improved resistance to chlorine disinfectants used in drinking water systems, superior temperature resistance in industrial applications and excellent behaviour for large bore ducts are some of the most state-of-the-art solutions for challenging applications.
This paper will highlight some of the key features of these recent developments which have resulted in a wide range of modern infrastructural and industrial projects across Italy for a longer service lifetime, thus establishing polyolefins as the preferred base materials for any applications under pressure in the most demanding environments.
Related papers
Author(s) : Dr. Henning Stieglitz
Urbanization and the increasing effects of climate change have meant the supply of fresh water and the disposal of wastewater, have become increasingly important in recent years. It is foreseeable that this demand will continue and intensify. In this context, plastic pipe plays a major role due to its unique...
Author(s) : Xin Zhou, Abdullah Saber, Shuqiang Wang, Huilong Chen
PE-RT II (PE100 classification) is designed >50 years lifespan at elevated temperature which aims to the growing demands on the applications of hot water and other industrial applications. District heating is a growing market in Greater China. However, the conventional pipes have serious corrosion issue in this...
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) : Anders Andtbacka, Peter Sejersen
In March 1999, a project report on the performance of buried Thermoplastics pipes was published by TEPPFA /1/. In the report, deflection and strain data on buried pipes were analyzed and compared with calculation results from several well-known static calculation models in use in Europe. Pipes were installed to...
Author(s) : Ernst van der Stok, Mirko Wenzel, Thomas Kratochvilla, Kurt Engelsing, Werner Weßing, Britta Gerets
It has not been possible to derive an accelerated procedure for the Point Load Test (PLT) as a pipe test before now. Further research and testing were therefore needed to establish appropriate requirements for standards including EN 1555-1 to rule out uncertainty in the market. The PLT is a central product test for...
Author(s) : Norbert Jansen
A practical requirement of temperature resistance of minimum 50 years at 70°C was established for the extra high voltage (EHV) corridor projects in Germany. Experts have debated what tests are best suited to prove the suitability of a pipe resin for cable protection pipes which may be installed hastily and under...
Author(s) : Jiyong Park, JaeHyuck Han, YoungGu Kim, Eunjin Park
This study investigates the influence of various parameters on polymer design to determine the slow crack growth. HDPE(High Density Polyethylene) materials with different molecular weight distribution and comonomer content for PE100-RC pipe were investigated with cracked round bar test. The cracked round bar test...
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) : Rafael A. García-Muñoz, Rafael Juan, Mónica de la Cruz, Beatriz Paredes, Carlos Domínguez
Plastics are widely used in various industries, resulting in the generation of significant amounts of plastic waste, which causes environmental and economic problems. Although mechanical recycling is the most commonly employed technology, the resulting recyclates often suffer from degradation and contamination. This...
Author(s) : Cindy Bray
For over two decades, the plastics pipe industry in Australia has aimed to recycle the maximum amount of usable plastic pipe and other suitable materials into new plastic pipes through programs such as take-back schemes and providing collection facilities on manufacturing sites. In Australia long-term sustainability...
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) : Márton Bredács, Jutta Geier, Mario Messiha, Gernot Oreski, Gerald Koinig, Raphael Horvath, Szilveszter Gergely, Gerald Pinter
In 2020, the global plastics production was 367 million tons. In Europe 20 % was used in the building and construction sector to manufacture in significant proportion polyethylene (PE) and polypropylene (PP) pipes [1]. To increase the current 30 % recycling rate, it is crucial to improve the quality of recyclates and...
Author(s) : A. Marangoni
The competitiveness of plastic pipes vs. non plastic pipes for water and sewer networks relies on both a superior performance to cost ratio and environmental benefits that can be offered to the utility industry, across the whole lifecycle of these networks. In order to help the European pipe network owners in...
Author(s) : Tobias Johnsen
To ensure the highest possible quality of plastic pipes for the Nordic market, the Nordic Poly Mark currently only allows virgin material or own reprocessed material. In order to accelerate the circular plastic pipe economy in the Nordics, a partnership between a PVC pipe waste collection system, a PVC pipe producer...
Author(s) : Jay Parvez, Richard Nichols
All thermoplastic and thermoset pipes must consider the impacts of cyclic loading on overall performance. Since its first use, PVC pipes have been tested for its resilience to such loading. As testing evolved over time, the method to determine cyclic capacity for gasketed PVC pipes has improved. Previously, the...
Author(s) : Peter Youssef, Sultan Alkendi, Hussein Basha
Bahr El-Baqar Water Treatment Plant, produces 2 billion m3 per year, introduces a sustainable solution for environmental pollution recovery and irrigation water source (via recycling the water of Bahr El- Baqar drain); whereas it protects the environment and generates water to support the cultivation of 4000 km2 in...
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) : J. Lahoz
An investigation project was launched in 2020 to clarify the relationships between the processing conditions and the design lifetime of PVC-U 250 pipes. Ca/Zn stabilized pressure pipes were extruded with different processing temperatures and characterized by their DSC B-onset temperature and degree of gelation. Their...
Author(s) : Ali M Alghamdi, Recep Yaldiz, Faisal Almana, Yousof Ghazzawi, Abdul Rahim Arafath, Ratnesh Khandelwal, Azzedine Kioul, Turki Al-Shahrani, Salem Al-Anazi, Sarfraz Abbasi, Mohammed Aljasser, Parthipan B, Kavya A, Harm Caelers
Reinforced thermoplastic pipes (RTPs) are multilayer structured pipes reinforced with high-strength materials such as fibers (glass, aramid, or carbon fibers). RTPs are used to transport highly corrosive mediums at elevated pressures and temperatures. An example of that is the use of RTP in the Oil & Gas industry to...