August 2017 Vol. 4

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Poly Pipe News Australia (PPN) is Australia’s Most Current and Comprehensive Source of News on Poly Pipes

Powerful HDPE Pipe Fusion with the McElroy TracStar 1200

High Country Fusion Pty Ltd (McElroy Distributor) Offering a Large Range of McElroy Hire Fleet – Parts and Service

Safety Alert – Fatal Pressure Pipe Failure Captured on Video

Ostwald Bros Placed in Voluntary Administration (Breaking News)

Asia Pacific Piping Systems Specialist Installation Services
APPS offer extensive subcontracting pipe systems installation and supporting services to mining, CSG and water industries

Zezt Seeking Trades Assistants for Melbourne Operation 
Zezt manufactures polyethylene pipe in Wynyard, Tasmania, and Derrimut, Victoria

Vinidex Seeking Production Supervisor for Melbourne Pipe Manufacturing (Employment)

Vinidex Employee Ratings and Reviews

Iplex Seeking National Accounts Manager (Employment)

Iplex Pipelines Agreement (Declassified)

Rehabilitation of Critical Water Main Infrastructure for Sydney Water (Feature Article)

Gigantic HDPE Pipes Beach in England After Breaking Free from Tow

Giant HDPE Pipes Washed Up on Norfolk Beaches Could Take Weeks to Recover

Reece Expands Range of Friatec Electrofusion Couplings and Elbows

GW Civil Contracting Seeking Civil Poly Pipe Layer/Welder (Employment)

Materials Emitted by Water Pipe-Repair Method May Pose Health Risks

Water Pipe Repair Method Not As Safe as Previously Thought, Researchers Say

New Tender – Goulburn-Murray Water (VIC) is seeking tenders for the construction of a  3.4km HDPE Pipeline Ranging in Diameter from 280mm to 500mm

Legal News – Polyethylene Pipe Systems Limited In Liquidation (Legal)

Mount Morgans Gold Project (MMGP) to Construct New Pipeline

Statewide Poly Services Seeking Poly Pipe Welder (Employment)

D&A Irrigation Seeking Experience Poly Pipe Welder and Installer (Employment)

Glencore Seeking Poly Pipe Welder for Mine Dewatering (Employment)

Polyfit Fabrication Seeking HDPE Lining Technician/Polywelder for Perth Role (Employment)

Cooper Energy has reached a final investment decision (FID) for its Sole gas project (Breaking News)

ExcelPlas Labs Undertake Failure Analysis, Failure Diagnosis and Root Cause Identification for Polyethylene Pipes
Failure in HDPE pipes could happen over a long term under low stress (under the yield stress).
The resistance to this phenomenon is the environmental stress-cracking resistance or slow crack resistance (SCR).
The high SCR in bimodal PE is due to the chain entanglements obtained with the incorporation of comonomers in the polymer of the high molecular weight fraction.
These entanglement networks affect the overall mechanical behavior under low stress conditions.
The failure includes several stages:
Microscopic cavities are formed around inhomogeneities such as scratches, pigments, catalyst residues, fillers and then these cavities form the initiation crazing step. It takes the largest fraction of the failure  mechanism. Once the deformation zone is formed, crazes propagate by the disentanglement of macromolecules and plastic deformation (yielding) until a crack initiation.

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

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]

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