April 2022 Vol. 2

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PPN- The Leading Source of Industry News on Polymer Pipes and Plastic Pipe Testing

Global News on Plastic Piping and Fittings in Real Time


NEWSMAKERS:  * Aliaxis * Baenninger * Basell * Cabot * ExcelPlas * Failure Analysis * GF Piping * Harco * ISO Standard * OIT * PEX Pipe Failures * PE100 * Plasson * PPN * PP-R * Remedy™ 500 * RITMO * TWI

INDUSTRY NEWS

Ritmo Launch New HDPE and PP Pipe Welder (Game Changer for the Industry) – Remedy 500 – Ritmo Track Machine for HDPE/PP Pipes
https://www.youtube.com/watch?v=Tp4cR7Pq20g&ab_channel=RitmoPlasticWelding
https://www.ritmo.it/en/butt-fusion-for-pressure-pipe/remedy-500-man/#

Recording of Assessment of Welds in PE Pipes (Full Video)
https://www.youtube.com/watch?v=F8iq92Yqci8

Cabot Corporation to Increase Prices Globally for Special Carbon Blacks Sold into Polymer Pipes
https://investor.cabot-corp.com/node/22821

Insane Graphic Shows Hundreds of Container Ships Waiting to Access Chinese Ports
Polymer Pipe Industry set for Massive Disruption as Supply Chains are Smashed
https://cloud.excelplas.com/s/YI1hjKuzq2X0bTF​

Integrity of Welded Joints in PE Pipes (Recorded Webinar)
The integrity of welded joints in polyethylene (PE) pipes installed in service depends on a number of factors, including the quality of the pipes and fittings, welding equipment and welding personnel; the welding procedure and standards used; the mechanical tests used to assess the joint performance; and whether the joints were inspected, either visually or using non-destructive testing (NDT).
https://www.youtube.com/watch?v=F8iq92Yqci8

Physical Foaming of Extruded Pipes Reduces Material Costs (Special Feature)
https://www.plasticstoday.com/extrusion-pipe-profile/physical-foaming-extruded-pipes-reduces-material-costs

Watch Large Bore Electrofusion Peeling and Cutting Tools in Action (Plasson)
https://www.youtube.com/watch?v=tLjR_HDINvA

Plastic Pipe Materials for Heat Pump Systems
Using expanded graphite as an additive to PE100
https://www.mdpi.com/1996-1073/15/7/2685/pdf

New ISO Standard ISO 16486-4:2022(En) Plastics Piping Systems for the Supply of Gaseous Fuels — Unplasticized Polyamide (PA-U) Piping Systems with Fusion Jointing and Mechanical Jointing
https://www.iso.org/obp/ui/#iso:std:iso:16486:-4:ed-2:v1:en:tab:3

Risk Assessment of Electrofusion Joints in Commissioning of Polyethylene Natural Gas Networks [PDF]
https://cloud.excelplas.com/s/Vt1PgnVC3XMRcnB#pdfviewer​

Aliaxis Completes Acquisition of Harco
https://www.inddist.com/mergers-acquisitions/news/22159055/aliaxis-completes-acquisition-of-harco

Baenninger Publish Technical Manual for Plastic Pipes [PDF]
https://www.baenninger.de/fileadmin/pdf/drucksachen/BR_Technisches_Handbuch_-_Technical_Manual_de-en_1807.pdf

NEW PUBLICATIONS

Evaluation of Tensile and Flexural Strength Properties of Virgin and Recycled High-Density Polyethylene (HDPE) for Pipe Fitting Application [PDF]
https://cloud.excelplas.com/s/2Yb34fHNXZsJW53#pdfviewer​

Effects of Ultraviolet Radiation on Recycled and Virgin HDPE Corrugated Pipes Used in Road Drainage Systems [PDF]
https://cloud.excelplas.com/s/F53ClGg0wJDRlqo#pdfviewer​

The Influence of the OIT Properties of Water Pipes Made of PE on their Durability and Reliability [PDF]
https://journals.pan.pl/Content/122727/PDF/art08.pdf

Effect of Residual Stresses on the Fracture of Polypropylene (PPR) Pipes
https://cloud.excelplas.com/s/O0Lw0P0GJbgXwJ1#pdfviewer​

Research on the Oxidation Induction Time and Oxidation Induction Temperature for Characterization of the Oxidative Stability of Poly(ethylene-co-propylene) Pipes
https://www.researchgate.net/profile/Mohamed-El-Saeid/publication/286931507_dlyl_almbyda_–trq-thlyl-mtbqyat-almbydat–_aljz-althany–_ktab_mtrjm/links/61f1219d9a753545e2f8ca97/dlyl-almbyda-trq-thlyl-mtbqyat-almbydat-aljz-althany-ktab-mtrjm.pdf#page=78

Study on the Thermo-oxidative Resistance of Selected PE-HD Grades Manufactured at Basell Orlen Polyolefins
The aim of this study was to evaluate the thermo-oxidative resistance and to estimate the lifetime of one of the types of high-density polyethylene of film type, produced by Basell Orlen Polyolefins Sp. z o. o. The subject of the research was the high-density polyethylene Hostalen ACP 9255 Plus. The thesis consists of two parts: literature and experimental. The literature part presents general information on polyethylene: its preparation, properties, processing, application, as well as the processes of polymer aging, their mechanisms, factors slowing down the aging process and differential scanning calorimetry as a method of measuring the resistance to aging of polymers: oxidation induction time, oxidation induction temperature and lifetime assessment. In the experimental part, oxidation induction time (OIT) and oxidation induction temperaturę (OIT*) were measured by DSC method, from which thermo-oxidative resistance and lifetime of Hostalen ACP 9255 Plus polyethylene were determined. The thermo-oxidative resistance study of Hostalen ACP 9255 Plus polyethylene carried out in this thesis indicated that the oxidation induction time for individual test samples, taken from two production campaigns, differed at different stages of their implementation. For the oxidation parameters of Hostalen ACP 9255 Plus polyethylene determined in this study, i.e., oxidation induction time, oxidation induction temperature, and activation energy, no regular changes were found with the progress of the production campaign. The values of lifetime of Hostalen ACP 9255 Plus polyethylene, determined on the basis of dependence of oxidation induction time on temperature, showed that at temperature of 25°C it is several dozen years, and every time the temperature is raised by 25°C it can shorten about 20 times.
https://repo.pw.edu.pl/info/bachelor/WUTb62e54aff032437981ed9259d8084a24/

PLASTIC PIPE FAILURE ANALYSIS

Failure Analysis of Plastic Pipes
If you’re looking for an expert witness for your case involving plastic pipe failure analysis, then you can’t beat the team at ExcelPlas Consulting.  Our team is setting a new standard for excellence in failure analysis of plastic articles but especially plastic pipe.  For plastic pipe, this includes HDPE, PVC & CPVC pipe as well as other plastic piping systems like Hobas GRP pipe, PP-R Pipe, and spoolable composite pipe.  When a plastic pipeline fails to perform as intended, our team can determine the root cause (chemical failure, oxidative failure, creep failure, overstress failure, fatigue failure, design failure, etc).   We are experts in HDPE water pipe failures, CPVC sprinkler pipe failure, PVC pipe failure analysis and PP-R Oxidation/Degradation investigations.
https://www.excelplas.com/wp-content/uploads/2020/01/Excelplas-A4-Brochure-4pp-Plastic-Pipe-Testing-NTs.pdf

ExcelPlas Investigating Poly Pipe Failures
Through failure analysis & forensic chemistry, we help clients improve product performance, increase profits, & resolve product liability claims with plastic pipes and fittings.
We are dedicated to unmatched excellence in failure analysis, investigative chemistry, material testing, and expert witnessing for plastics, polymers and composites.
With over 25 years of investigative experience, the staff at ExcelPlas are uniquely positioned to help clients resolve the most challenging performance and processing issues related to materials and plastic pipes and fittings.
https://www.excelplas.com/contact-us/

Cautionary Warning:  Some PEX Piping is Prone to Development of Cracks Due to Early Oxidation
ExcelPlas Labs have developed a three-step testing program to detect early failure of PEX pipe and their expected service lifetime.
The 3 Step Testing is based on:

  • Oxidative Induction Time (OIT) testing to determine the residual level of oxidative stability (i.e. thermal stability)
  • Quantitative Additive Analysis (QAA) to determine the type and level of protective antioxidants and stabilizer present.
  • Scanning Microscopy on inner surface after bend back to image developing microcracks

Samples of PEX pipe just 10 cm long are needed for the analysis.  7 Day turnaround on test reports.
https://www.excelplas.com/wp-content/uploads/2020/01/Excelplas-A4-Brochure-4pp-Plastic-Pipe-Testing-NTs.pdf

MORE POLY PIPE NEWS

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https://www.youtube.com/watch?v=eUKxWbOZY10


ExcelPlas Labs Pipe Failure Investigations
ExcelPlas Labs have created a new benchmark in failure analysis of HDPE, PP-R, PB and PEX pipes in addition to PVC &  CPVC pipes as well as composite GRP and GRE pipes.  When a plastic pipeline fails to perform as intended, our team can determine the root cause of failure (e.g.  oxidative failure, chemical failure, creep failure, over-stress failure, fatigue failure, design failure, etc).  ExcelPlas are experienced with all plastic piping failure modes and mechanisms including Slow Crack Growth (SCG) Rapid Crack Propagation (RCP), Environmental Stress Crack Resistance (ESCR), Oxidative Stress Cracking (OSC), cyclic fatigue, manufacturing defects, and polymer material problems.
http://www.excelplas.com/

ExcelPlas Strain Hardening Test (SHT) for HDPE Pipes
The SHT in accordance with ISO 18488 is a relatively new, but excellent way to obtain a rapid indication of the Stress Crack Growth (SCG) resistance of your piping material. This tensile test performed at 80°C has become in just a few years the new standard for Batch Release Testing (BRT). And not without reason.  The test requires only a very small amount of material, the results are very reliable with a very low inter-laboratory scatter and the results are available within a few days, regardless of the PE grade. The SHT is usually performed on resin material but it can also be performed on samples taken directly from pipes or sheets. As accredited lab, EXCELPLAS is happy to discuss the possibilities with you, whether it is for BRT, benchmarking, quality control of your (high performing) PE grade or for polymer compliance/ validation.
http://www.excelplas.com/

Australia’s Plastic Pipe Testing Laboratory
ExcelPlas Laboratories provides a comprehensive plastic pipe joint testing service and is equipped with a state-of-the-art laboratory to test a range of polymer materials including polyethylene and polypropylene. ExcelPlas can carry out testing on plastic tube and pipe ranging in wall thickness from 3mm to 1200mm. ExcelPlas Laboratories provide a comprehensive service to Industrial & commercial companies, environmental consultants, Government bodies, and local Authority customers throughout Australia and Asia. All testing is carried and out in accordance with ASTM, ISO & WIS methods and is fully accredited to ISO 17025 by NATA.

  • Butt Fusion Weld Testing
  • Weld Testing
  • Testing of Electro-fusion Welds
  • Tear on saddle joints
  • Crush De-cohesion of Electro-fusion welds
  • Polymer & Plastics Identification
  • Chemical & Thermal Testing
  • Site Audits

http://www.excelplas.com/

ExcelPlas – the Australian Pipes & Fittings Testing Laboratory

  • Accredited to ISO 17025 by the National Association of Testing Authorities (NATA) Australia, and is Australia’s largest laboratory dedicated for the testing of plastic pipes and fittings to various Standards which include Australian, European and International Standards.
  • The staff employed at the laboratory have a combined experience of more than 85 years within the plastics industry specifically with manufacturing, quality control and the research and development of plastic piping systems including HDPE, PEX, PP-R, PVC, U-PVC, M-PVC, O-PVC, ABS, GRP, GRE and PB.
  • Services provided include conformance testing, compliance testing, batch release testing, root cause analysis for field failures and non-destructive testing of samples.
  • http://www.excelplas.com/

ExcelPlas Lab Specialising in HDPE Pipe Condition Monitoring, Failure Analysis and Testing
In the event of a HDPE buttweld or electrofusion weld failing during initial testing, or in service, we can conduct investigations to assist in identifying the root cause of the failure.
This service also extends to the premature failure of the pipe or fitting itself.
http://www.excelplas.com/plastic-pipes

ExcelPlas Pipe Testing is a Leader in the Field of Polyethylene (PE) and High-Density Polyethylene (HDPE) Testing
ExcelPlas is accredited with the National Association of Testing Authorities (NATA) for butt weld tests, bend and tensile tests, peel decohesion tests on electro fusion sockets and failure mode determination
http://www.polypipetesting.com.au/butt-fusion-welds/

New UHMWPE Pipe for Tailing Offers Greater Than 4X the Abrasion Resistance of PE100 (Australia wide)
http://slurrypipes.com.au/

ExcelPlas Poly Pipe Weld Inspection Lists Top 7 Causes of Weld Failure:

  • Lack of scraping
  • Inaccurate scraping
  • Contamination from dirt, water, oil or clays
  • Lack of Paralell-ness of fusion faces
  • Misalignment of surfaces
  • Time, temperature and pressure deviations
  • Not adhering to cool times

We have extensive experience in inspection of poly pipe welds for assuring welded joint quality.  Direct Poly Pipe Inspection ensures that operators are following the proven welding procedure; this reduces the occurrences of operational errors which lead to defects such as inclusions, lack of fusion (LoF), porosity and misalignment.
More information, contact john@excelplas.com

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