MATERIALS | PRESSURE PIPE
Right: PE100 pipe from Aliaxis will replace GRP pipe, which was leaking
is an agreed call-off schedule, for which Aliaxis is storing pipe at an airfield.” The offsite storage allowed Aliaxis to secure available raw materials and begin production early – and to manage a controlled delivery schedule with limited on-site space, he said.
Pressure testing At K2022, Sciteq of Denmark introduced a new solution for airless pressure testing of pipes at pressures up to 1500 bar. The system is used to determine the resistance to high internal pressures on pipes, fittings and other applications requiring high pressure testing, with an accuracy of 0.5%. The company says it has developed a propor- tional valve that ensures that high pressures are maintained with high accuracy even at such high pressures. Static, burst and step testing of pipes and fittings can all be accommodated. This opens up testing of new ranges of reinforced pipes or other high-pressure products, says the company. “It was a complex challenge to design a solution
that can perform safe and precise tests at such a level of pressure,” said Dennis Damborg, CEO of Sciteq. “We introduced this system to the market because we have seen an increase in the demand for safe burst test, static and step test at high pressures.” With its Sigma software, the pressure test unit enables test laboratories to perform high pressure testing with precise pressure control and stable, linear pressure regulation. Sciteq also used K2022 to unveil updates to its Sigma software – which controls the test systems.
Below: A new ASTM standard covers PE4710 pipe for HDD installation
New ASTM standard ASTM has issued an updated standard for the use of HDPE pipe in horizontal directional drilling (HDD) projects. ASTM F1962-22, Standard Guide for Use of Maxi-Horizontal Directional Drilling for Placement
of Polyethylene Pipe or Conduit Under Obstacles, Including River Crossings, was revised and updated in December 2022 by an ASTM subcommittee. It includes pipe made with PE4710 compounds. In addition to ASTM, ASME and CSA standards, PE4710 has also been incorporated in AWWA (C901, C906, M55), FM 1613 and others. The pipe is used in force main, potable water and other projects. According to the Plastics Pipe Institute (PPI), PE4710 is the highest performance classification of HDPE piping material for water applications. “PE4710 compounds offer utilities and design-
ers a greater level of performance,” said Camille George Rubeiz, senior director of engineering for PPI’s municipal and industrial division. “This means using HDPE with increased flow capacities plus increased resistance to surge pressure, fatigue and slow crack growth.” Rubeiz cited several recent applications, includ- ing one in Atlantic City where a 32in diameter PE4710 pipe ran for 1,500 feet – 80 feet below the Beach Thorofare waterway. In another, 4,000 feet of 20in HDPE pipe was embedded 60 feet below Florida’s Biscayne Bay to deliver potable water. “We encourage the use of F1962 – the only
ASTM Standard for HDD,” said Rubeiz. “This – cou- pled with Pipeline Analysis & Calculation Environ- ment and PPI-BoreAid free software programs – will provide the information for planning the design.”
CLICK ON THE LINKS FOR MORE INFORMATION: �
www.agru.at �
www.egeplast.de �
www.strohm.eu �
www.aliaxis.co.uk �
www.ami.international �
www.bakerhughes.com �
www.sciteq.com �
www.astm.org �
www.plasticpipe.org
32 PIPE & PROFILE EXTRUSION | May/June 2023
www.pipeandprofile.com
IMAGE: PPI
IMAGE: ALIAXIS
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