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2018 Las-Vegas : C-PVC-O, pushing limits beyond in molecular orientationAuthor(s) : Ignacio Muñoz
During the last years PVC-O has become a popular product in pipe business due to the huge improvements of mechanical properties of PVC after orientation. At the same time, CPVC has become an important choice for hot water conduits in in-house applications. Molecor has started a research program to evaluate the...
2018 Las-Vegas : CPVC application in the fire sprinkler system in ChinaAuthor(s) : Jiang Tongjun, Fu Zhimin, Yang Yuanjin
This paper introduces the application of CPVC pipe in fire sprinkler systems in China. The advantages and differences of CPVC pipe versus to galvanized steel pipes, the improvement of related laws and regulations and the market outlook are discussed. The overall result is a change in the upstream and downstream...
2018 Las-Vegas : Field test of Glass fiber reinforced polyethylene pipe system at soften groundAuthor(s) : Mitsuaki TOKIYOSHI, Gentaro TAKAHARA, Joji HINOBAYASHI, Toshinori KAWABATA, Takashi KURIYAMA
Glass fiber reinforced polyethylene pipes and fittings are controlled for bending characteristics (Strength and stiffness) for vertical and axial directions of pipe by spiral cross winding method. Generally, to use this method, it takes much stronger for vertical strength than axials cause of extruded direction,...
2018 Las-Vegas : Innovations in production of corrugated pipesAuthor(s) : J. Vlachopoulos, M. A. Lupke
A very tight-fitting bell-and-spigot inline coupler, minimizing the gap between connecting pipe segments, and a space efficient pulsating corrugator, requiring just three mold block pairs, were developed.
The author of a recent article in New York Times [1] claims that some 300 Billion dollars are needed to repair the...
2018 Las-Vegas : Large diameter spiral wound pressure pipesAuthor(s) : Bülent Kuzkaya
Spiral wound pipes are becoming more and more important in larger diameter HDPE pipe production technology. The spiral wound structured wall pipes with profiles are already well known and used for several low or non-pressure pipe applications. This paper shows that spiral wound pressure pipes can fulfill the...
2018 Las-Vegas : Large pressure pipe system – Fully PE100Author(s) : Sverre Tragethon, Martin Andersson
Global mega trends push for investments in sewage treatment capacity & efficiency. A trend is to go for central regional treatment sites, typically remotely located from dense populated cities. This calls for high capacity pressure sewage transmission pipelines. Reliable operation is of course of paramount importance...
2016 Berlin : Bi-oriented PVC extrusion: stretching pipe performanceAuthor(s) : André Nijland
Bi-oriented PVC (PVC-O) pipes are increasingly installed on a worldwide basis for drinking water applications. This is due to the outstanding mechanical properties of PVC-O pipes, such as high strength and high ductility. Furthermore bi-oriented PVC pipes are light weight, flexible and have a low carbon footprint and...
2016 Berlin : Fiber reinforced large diameter polyethylene pipeAuthor(s) : Shi Jingdong, Tan Gangqiang
FIBER REINFORCED LARGE DIAMETER POLYETHYLENE PIPE (GRPE) consists of fiberglass as the middle layer, and HDPE as inner and outer layers to provide required strength and stiffness. This composite pipe is made by spirally winding under hot melt condition, pipe pressure ranges is from 0.8 to 1.6 MPa. The fiber reinforced...
2016 Berlin : New en standard PVC-Oriented plastic piping systemsAuthor(s) : HENK MEERMAN
PVC-Oriented is the second generation of PVC-Unplasticized. Molecular orientation of PVC-U pipes results in a strong improvement of the physical and mechanical properties. The new draft European standard for PVCoriented plastic piping systems is based on the ISO 16422 “Pipes and joints made out of oriented...
2016 Berlin : Research program for assessing seismic risks on polyethylene gas pipelinesAuthor(s) : Dominique GUEUGNAUT, Charles FERNANDEZ, Romuald BOUAFFRE, Bertrand SEVRE, Florent ANGELINI
Representative earthquake loadings have been reproduced in the ENGIE Lab-CRIGEN laboratories on three PE grades, including an excavated old PE63 pipe operated during more than 35 years. Dynamic loading does not alter the pipe residual performances for the three PE families tested, as shown by both the hydrostatic...
2016 Berlin : Residual quality of excavated UPVC gas and water distribution pipelinesAuthor(s) : Frans Scholten, Ernst van der Stok, Britta Gerets, Mirko Wenzel, Mike Boege
The current condition of 35-50 years old uPVC main (110 mm) and service (32 mm) pipes for gas and water distribution was assessed. From 27 excavation sites in total about 400 segments of 1.2 meters length each were tested using many techniques. The K-value (average molecular weight) of the PVC, the degree of gelation...
2016 Berlin : The Evolution of Elastomeric Joints in Plastic Pipeline SystemsAuthor(s) : Julian West
Until the late 1950’s water and sewerage pipe lines used predominantly ridged joints often made from tared yard and cement mortar. The introduction of ‘flexible’ rubber ring joints in the 1960’s allowed, angular deflection, transverse shear load and localized pipe deformation without leakage or failure of the...
