August 2022 Vol. 2

Download PDF

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 * Atkore * CFRP * CIP * Cured-in-Place * ExcelPlas * Failure Analysis * GF Piping * GRP Pipe * IPEX * PE100+ Association * Plastic Pipe Institute * Polyline Pipe Systems * PPI * PPN * PVC-O * MLCP * Molecor * Multi-Layer Composite Pipe * Rautitan® * Rehau * TEPPFA * United Poly Systems * UPS


Special Feature: 100 Years Lifetime of Polyethylene Pressure Pipe Systems Buried in the Ground for Water and Natural Gas Supply

Thousands of Workers May Have Been Exposed to Toxic Chemicals While Using Cured-in-Place (CIP) Plastic Pipe Liners

Tech Forum – Are You Overlooking the Most Important Investment in Your Pipe Fusion Equipment?

Do You Have News to Share with +40,000 Poly Pipe Professionals?

PPI Announces HDPE Oil and Gas Pipe Training Seminar – ASPE Pipeline

Molecor PVC-O Pipes at Low Temperatures: No Practical Effect on Pipe Installation and Use

New Drinking Water Approval for REHAU’s RAUTITAN Multi-Layer Composite Pipe (MLCP)

Ipex Parent Aliaxis Buys Leak Detection Specialist Aquarius

Tough, Durable Plastics Pipes Prove Worth in Construction

Atkore Inc. Announces Acquisition of United Poly Systems HDPE Pipe Manufacturer

Application of CFRP Wrap for Reinforcing Undamaged Thin-Walled Pipe Bends under Thermal Expansion Loads

Rehabilitation of Submerged Pipes with FRP Technology

Why Use Polymer Testing Services from ExcelPlas?
Our polymer material testing services help you to:

  • Identify the characteristics, properties and flaws of your materials
  • Comply with all relevant national and international standards(ISO,ASTM,..)
  • Ensure that your polymeric materials meet your clients’ safety, environmental and  requirements

Composition of a plastic material
By combining different analysis techniques, we can obtain the composition of an unknown plastic material or compound, thus identifying which polymer or polymers, mineral fillers and reinforcements are present. Likewise, the percentage of these mineral fillers.  This information is very useful to ensure compliance with the requirements needed to obtain the technical data sheet of a material, to understand the possible causes of failure in manufacturing or service, etc.

Verification of specifications in pipes and their raw materials
With extensive experience in testing for the plastic pipe industry (PE, PP, PVC, PEX, GRP pipe..)
In this regard, we perform carbon black content tests, carbon black dispersion tests, Oxidation Induction Time (OIT), Tensile, Vicat, among others, all aimed at ensuring minimum values that enables compliance with the required technical specifications.
In addition, we determine the degree of cross-linking and the gel content in PE-X pipes, as well as in any other cross-linked materials.
Some of our testing capabilities include:

  • Thermal Anaylsis (DSC, TGA, ASH content)
  • FTIR
  • XRF
  • XRD
  • HDT-VICAT Test Instrument
  • UL94 Flammabilitty
  • Rheometry (Melt Flow Inedex, Capillary Rheometer)
  • Universal Testing Machines
  • Shore A&D
  • Density
  • ESCR
  • Twin screw extruder for R&D activity
  • Hydrostatic test for plastic pipe


The failure of electrofusion or butt fusion joints in polyethylene gas pipework can be due to several factors including incorrect alignment, contamination, incorrect temperature or the duration of joint fusion. 
If a joint failure occurs, investigations are important to help identify modifications to procedures or training that can help you minimise the occurrence of future failure. This is where we can help.
We provide a detailed PE joint failure investigation service which typically include:
• Digital inspection of the received sample, including dimension measurements of sizes and ovality
• Segmenting the joint for visual and microscopic investigation
• Elemental analysis of any contamination found in the joint
• Peel decohesion testing

Plastic Pipeline Expert Witness
If you require expert witness or legal consulting assistance in pipeline failure analysis, plastic pipeline joining methods, plastic piping welding, or associated technical areas please contact us.

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 finished pipes and fittings.


PPN the Digital News Platform for Communicating to the Global Plastic Pipe Industry
Send Us Your News!!!  PPN Publishes weekly.

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.

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.

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

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.

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.

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

New UHMWPE Pipe for Tailing Offers Greater Than 4X the Abrasion Resistance of PE100 (Australia wide)

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 [email protected]

Get Your HDPE Pipe Products or Services Noticed – Advertise in Poly Pipe News (PPN) Australia

This Newsletter is brought to you by Excelplas Labs, Australia’s Largest group of Poly Pipe Testing Labs.

Pipe Poly News (PPN) is now Australia’s most current and comprehensive source of news on Polyethylene pipes and Poly Pipe Welding;

Poly Pipe News is now sent to over 4500 Poly Pipe Industry Members every week.

Any news requests should be sent to [email protected]
To subscribe, visit

2022 Copyright ExcelPlas Labs

PPN is owned and operated by ExcelPlas Pty Ltd.  By subscribing to PPN you agree to receiving regular PPN newsletters as well as the PPN platform using your email contact details to enhance the performance and functionality of PPN and its analytics reports.  These email contact details allow PPN to track page views and create more targeted and relevant content.  PPN provides an unsubscribe link on the bottom of each PPN newsletter.