November 2021 Vol. 3

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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


NEWSMAKERS:  * Aliaxis * Borealis * CPVC * ExcelPlas * Failure Analysis * GF Piping * PE100 * PE-RT * Polytest® * PPN * PP-R * PPXX * Rehau * ROCUT® * Rothenberger * TOTAL * TWI Global * Uponor

INDUSTRY NEWS

PPXX Amsterdam Launches PPXX Online
https://www.phcppros.com/articles/14481-ppxx-amsterdam-launches-ppxx-online

The 20th Global Plastic Pipe Conference & Exhibition (PPXX) Online Goes Live!
https://www.teppfa.eu/latest-news/the-20th-global-plastic-pipe-conference-exhibition-ppxx-online-goes-live/

Aliaxis Launches New HDPE Drainage Products
https://www.hpmmag.com/products/aliaxis-launches-new-hdpe-drainage-cpd

GF Piping Systems Introduces Bio-Attributed PVC to its Portfolio to Reduce CO2 Footprint and Provide Sustainability Benefits
https://news.cision.com/gf-piping-systems/r/industry-sustainability-leader–gf-piping-systems-introduces-bio-attributed-pvc-to-its-portfolio-to-,c3453136

Uponor Completes Repurchase of Own Shares
https://au.news.yahoo.com/uponor-completed-repurchase-own-shares-074500959.html

NEW Webinar on Volumetric Non-Destructive Testing of Electrofusion (EF) and Butt Fusion (BF) Joints in PE Pipes (26th January 2022)
https://www.twi-global.com/media-and-events/events-diary/an-overview-of-polytest

Introducing ROCUT® Plastic Pro, the New Pipe Cutter for Plastic Pipes from Rothenberger
https://www.youtube.com/watch?v=_5abVh2ZpDw

NEW PATENTS

TOTAL Patents Polyethylene-based Masterbatches Comprising Carbon Nanotubes and Metallic Stearate for Manufacturing PE Pipes
https://www.freepatentsonline.com/EP3912956A1.pdf

Borealis Patents Polyethylene with Improved Balance of Properties for HDPE Pipes [PDF]
https://www.freepatentsonline.com/20210355308.pdf

Uponor Patents New Type of Insulated Plastic Pipes
https://www.freepatentsonline.com/11181223.pdf

NEW RESEARCH

Fatigue Damage Assessment of Welded HDPE Pipelines Evaluating their Energy Release
https://www.sciencedirect.com/science/article/pii/S245232162100175X

Active Acoustic Leak Detection and Localization (ALDL) in Plastic Pipes Using Time Delay Estimation
https://www.sciencedirect.com/science/article/abs/pii/S0003682X21005764

Finding The Relationship Between Non-Destructive Test Methods and The Tensile Impact Test on PVC Pipes
https://www.kiwa.com/4a6140/globalassets/netherlands/kiwa-technology/images/id275-paper-ppxx-ndt-on-pvc-sjoerd-jansma.pdf

Comparing Short-Term Performance of Corrugated HDPE Pipe Made With and Without Recycled Resins for Transportation Infrastructure Applications
https://ascelibrary.org/doi/abs/10.1061/(ASCE)MT.1943-5533.0004067

Effect of Dent Defects on the Collapse Pressure of Polypropylene-Steel Sandwich Pipes
https://www.sciencedirect.com/science/article/pii/S0263823121006753

Preliminary Acoustic Study of 3D Localization of Buried Polyethylene Pipe
https://hal.archives-ouvertes.fr/hal-03431924/

Flexural Behaviour and Fracture Characteristics of Polymeric Pipes Under Curved Three-Point Bending (CTPB) Tests
https://www.springerprofessional.de/en/flexural-behavior-and-fracture-characteristics-of-polymeric-pipe/19890372

Standardized, Accredited and Fully Independent Testing of Plastic Pipes and Pipelines
ExcelPlas plastic pipes testing services help determine strength and ageing properties of piping materials and systems, serving resin manufacturers, pipe extruders, certification bodies and utility companies worldwide, helping water and gas supplies running smoothly.
We provide durability and performance testing of plastic pipes and pipelines for certification and approval purposes. Our testing services are accredited to ISO/IEC 17025.
As your Testing Partner, we offer fixed price agreements for long-term projects such as lifetime assessment and condition monitoring of your polymer pipe assets. 
Advisory Services, Consulting and R&D
Our experts provide advisory services in plastic pipes testing, with deep technical expertise in standardization, approvals, test program optimization and interpretation of test results based on solid experience.
We also offer applied testing focusing on new applications and assessment of new and improved properties of plastic piping materials.
https://www.excelplas.com/wp-content/uploads/2020/01/Excelplas-A4-Brochure-4pp-Plastic-Pipe-Testing-NTs.pdf

PLASTIC PIPE FAILURE ANALYSIS

Failure Analysis of Plastic Pipes
If you are 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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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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