Plastic Pipes Conference Association papers

In this section, you will find a database of all articles presented and published by PPCA in biannual conferences organized by PPCA since 1970.

DETERMINING THE RESIDUAL QUALITY OF PE PIPES USING THE STRAIN HARDENING TEST

Author(s) : Ernst van der Stok, Frans Scholten 2016 Berlin

Samples machined directly from pipe show that orientation has a large influence on the strain hardening modulus. No effects arising as a result of residual stresses were found. Samples machined in the axial direction from a hydrostatic pressurised pipe showed no effect as a result of this mechanical degradation. For...

Development and applications of a novel polymer of polyvinyl chloride having a hydrophilic property

Author(s) : Kohei Moritaka, Yoshihiro Kubo, Shuhei Kanmuri 2016 Berlin

We have developed poly (VC-co-PEGMA). This polymer is obtained from the polymerization with the vinyl chloride monomer and PEGMA (polyoxy ethylene glycol monomethacrylate). Each component of this polymer is chemically-bonded. This polymer shows hydrophilic property, antistatic properties, transparency etc., and, is...

DEVELOPMENT OF FLAW ACCEPTANCE CRITERIA FOR WELDED JOINTS IN PE PIPES

Author(s) : Mike Troughton, Amir Khamsehnezhad 2016 Berlin

the inspection of butt fusion and electrofusion joints in polyethylene (PE) pipes. Depending on the technique and inspection procedure, various types of flaw, including discrete planar lack of fusion, particulate contamination, voids, cold fusions and pipe under-penetration can be detected. However, the usefulness of...

DEVELOPMENT OF PE-UHMW PIPES TECHNOLOGY AND STANDARD IN CHINA

Author(s) : Aimin Xiang, Jianling Xie, Yuanzhang Yu, Yufeng Ren 2016 Berlin

PE-UHMW pipes standard and application in China are introduced. In this study, the tensile properties, charpy impact strength and abrasion characteristics of PE-UHMW pipes were investigated. These results demonstrate the excellent properties of PEUHMW pipes. A novel method of testing melt flow rate was also...

DEVELOPMENT OF THE RING FATIGUE TESTING METHOD FOR COMPOSITE PIPES

Author(s) : Yuji Higuchi, Rei Hyuga, Kazushi Yamada, Hiroyuki Nishimura 2016 Berlin

Recently, thermoplastic-based composite pipes have been developed in order to satisfy the higher requirements for gas and water distribution. Although the stress rupture test is now the major test method used to evaluate the long-term performance of these pipes, developing a new, convenient test method making it...

DIGITAL RADIOGRAPHY OF PE JOINTS

Author(s) : Mats Bergman, Karin Jacobson 2016 Berlin

The Swedish Water & Wastewater Association (SWWA) has funded a R&D project to investigate different methods suitable for installation inspection of PE joints in field. Methods like phased array ultrasonic testing (PAUT), microwave technology and digital radiography were studied. Digital radiography shows...

EFFECT OF DIFFERENT CHLORINATED MEDIA TO PE PIPE MATERIALS

Author(s) : Amaia Bastero, Márton Bredács, Andreas Frank 2016 Berlin

The effect of chlorinated water environment to plastic pipes has been intensively investigated in recent years and proved to affect the lifetime of plastic pipes. Since it is known that the use of the different disinfectants (ClO2, HClO/ClO- ) imply different degradation rates, understanding the conditions...

ELECTROFUSION JOINING PERFORMANCE OF VERY LARGE PRESSURE PIPES PRODUCED WITH MFR5<0.2 G/10MIN PE100

Author(s) : Predrag Micic, Cliff Mure 2016 Berlin

An extensive investigation was conducted into the electrofusion compatibility of pipes produced using a PE100 resin with an MFR5 value below 0.2 g/10min. The electrofusion (EF) joining program included pipes up to 800 mm in diameter and the use of electrofusion couplers and saddle type fittings as well as varying...

EVALUATING STRAIN HARDENING (SH) AND CRACKED ROUND BAR (CRB) TEST METHODS WITH RESPECT TO MOLECULAR STRUCTURE OF MATERIALS AND CORRELATION TO NOTCHED PIPE TEST (NPT)

Author(s) : Suleyman Deveci, Dongyu Fang 2016 Berlin

Latest developments in polyethylene production (hexene co-monomer and bi-modality) have increased the material’s Slow Crack Growth (SCG) properties, which is a time dependent brittle type failure under low stress levels and one of the most important long term properties of pipe grade polyethylene materials. Despite...

EVALUATION OF EARTHQUAKE DAMAGE OF PVC PIPES FOR WATER DISTRIBUTION IN JAPAN

Author(s) : Yuichiro Goto, Hiroyuki Nishimura 2016 Berlin

The damage of PVC pipes caused by the great earthquakes was investigated in Japan by various organizations including public and private institutions. As a result of these investigations it is found that high-impact modified PVC pipes with the long insertion length have the least failures. Moreover it is also reported...

EVALUATION OF THE RESISTANCE TO THIRD PARTY ATTACKS OF PLASTIC PIPES

Author(s) : Hiroto Taguchi, Hideto Kurokawa, Kaori Numata 2016 Berlin

This study pursued a quantitative evaluation of “the resistance to third party attacks”, whether pipes are destroyed or not, of two polyethylene pipes (PE80 and PE100) and two polyamide12 (PA) pipes. Two types of tests that simulate the impact from actual digging machine (attack simulation test) and four types of...

EXPANDING THE APPLICATION RANGE OF HIGH DENSITY POLYETHYLENE FOR USE AS AN INNER-LINER MATERIAL IN REINFORCED THERMOPLASTIC PIPE AND STEEL PIPE

Author(s) : Johannes de Bruin, Dr. Bert Dalmolen, Albo van Hateren 2016 Berlin

Normal High Density Polyethylene (HDPE) is commonly used as the fluid contacting element, or the “inner-liner”, in Reinforced Thermoplastic Pipes (RTP) and steel pipes up to 65 ºC. Through a modification of the HDPE polymer matrix, by adding nanoparticles, the E-modulus can be increased. Research shows that...

FAST COMPARISON OF DIFFERENT POLYMERIC PIPE MATERIALS: EXTENDING THE USE OF THE CYCLIC CRB- TEST (ISO 18489)

Author(s) : G. Pinter, F. Arbeiter, A. Frank 2016 Berlin

The cyclic cracked round bar test has recently been added as a full-fledged ISO standard (ISO 18489) for comparison of polyethylene pipe grade materials’ slow crack growth resistance. However, possibilities of this test are yet far from being exhausted. Seeing, that polyethylene is only used in approximately 30% of...

FATIGUE CRACK GROWTH RESISTANCE OF POLYPROPYLENE IN CHLORINATED WATER AT DIFFERENT TEMPERATURES

Author(s) : Joerg Fischer, Patrick R. Bradler, Reinhold W. Lang, Gernot M. Wallner 2016 Berlin

The present paper aims to study the crack growth resistance of a black-pigmented polypropylene pipe grade when exposed to elevated temperatures and various environmental media (air, deionized water, ionized water with a specific chloride content, and chlorinated water) under the simultaneous application of cyclic...

FIBER REINFORCED LARGE DIAMETER POLYETHYLENE PIPE

Author(s) : Shi Jingdong, Tan Gangqiang 2016 Berlin

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...

FLEXIBLE PLASTIC SOLUTION FOR DISTRICT HEATING PIPES

Author(s) : Dr. Anton Vasilenko 2016 Berlin

In today’s world a lot of energy is wasted. More than 50 % of the energy is lost on its way to the customer. The fundamental idea of modern district heating is to recycle heat that otherwise would be lost and to use renewable sources to heat homes. In other words: a market place for green heat that reduces...

FLEXIBLE PRE-INSULATED THERMOPLASTIC REINFORCED PIPES FOR CITY HEAT NETWORK

Author(s) : Ostrovsky Dmitry, Shmelev Andrey 2016 Berlin

Pre-insulated thermoplastic reinforced pipes were developed for East European heating networks with elevated operating temperatures and pressures. In contrast to monolayer plastic pipes, high modulus aramid mesh reinforcement used in thermoplastic reinforced pipes allows significantly to increase both operating...

GENERIC ELECTRO FUSION PROCEDURES DEVELOPED BY THE PLASTIC PIPE INSTITUTE – MUNICIPAL ADVISORY BOARD

Author(s) : GREG SCOBY 2016 Berlin

The Plastic Pipe Institute Municipal Advisory Board recently completed the publishing of the “Generic Electro Fusion Procedure” covering 12 inch and smaller sizes. This publishing effort was conducted with a collaboration of water system operators and electro fusion fitting manufacturers specifically addressing...

IMPLEMENTATION OF A NEW CHLORINE DIOXIDE DEVICE FOR ACCELERATED AGING OF POLYOLEFIN PIPE MATERIALS

Author(s) : Márton Bredács, Anita Redhead, Andreas Frank, Amaia Bastero, Gerald Pinter 2016 Berlin

To maintain the high quality of potable water chlorine based disinfectants are frequently dosed into the drinking water network. Considering the oxidative nature of these species their long-term impact on the aging of polyolefin pipes is a matter of interest. In this study four polyolefin pipe grades were objected to...

Increased Internal Pressure Resistance Polypropylene (MRS 12.5 = PP125): How Polymer Design Has Led to Step-Change Performances and the Implications for PP-R Applications

Author(s) : Giampaolo Pellegatti, Francesca Tisi, Umberto Credali, Monica Galvan, Ines Mingozzi, Emanuele Burgin 2016 Berlin

An innovator and leader in the production of resins used in piping systems, LyondellBasell and its predecessor companies have served customers in the pipe industry for more than 50 years. Customers have succeeded in steadily replacing traditional materials such as cast iron, steel, clay and concrete; plastic pipes...



Members of the Association

BOREALISBOROUGEINEOS O&PIRPCKorea Petrochemical IND. Co., LTD (KPIC)LyondellBasellPetroChina Dushanzi Petrochemical CompanyPRIME POLYMERSABICSCG Chemicals & Thai PolyethyleneSinopecTASNEE
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