Extreme Pressure Water Line Using Steel-Encased HDPE Pipe Receives Award

October 2013, Vol. 68 No. 10

A strong yet spoolable pipe capable of handling operating pressures up to 1,500 psi was used as an alternative to traditional steel pipe to create a three-mile water transfer line in a rough region of north-central Pennsylvania.

The eight-inch diameter pipe from FlexSteel Pipeline Technologies Inc., Houston, TX, contains a corrosion resistant inner liner and outer layer made from an advanced grade of high-density polyethylene (HDPE) with a helically wrapped steel reinforcement in the middle. Due to the undertaking’s high-pressure and 16,000 foot-long installation with minimal effect on the area, which is part of a 400-acre private wildlife management area, it was named Project of the Year by the Plastics Pipe Institute Inc.’s (PPI) Energy Piping Systems Division (EPSD).

“We were very pleased to present one of our newest members with the EPSD Project of the Year Award,” stated Tony Radoszewski, executive director of PPI. “The ability of FlexSteel’s pipe to handle 1,500 psi of pressure is impressive; especially when you consider that a typical residential water system is rated at around 60 psi. This innovative pipeline used for a fracking project in the Marcellus Shale area enabled critical project deadlines to be met, while delivering enhanced functionality with minimal environmental impact.”

“This is certainly an honor we are all very proud of,” stated Tom Ferguson, CEO of FlexSteel, “especially since we just joined the PPI. Winning the Project of the Year Award is a wonderful acknowledgement of our product and years of hard work.”

The three-plus mile run of eight-inch inside diameter (ID), flexible, steel-reinforced polyethylene pipeline was designed and qualified in accordance with API SPEC 17J and API RP 15S to provide years of failure-free performance.

“With a required operating pressure of 1,500 psi, typically, steel pipe would have been specified,” according to Randy Knapp, director of engineering, PPI EPSD. “But because of FlexSteel’s composite steel reinforced product design and the use of PE 4710 for the internal liner and the external sheath it was able to meet that requirement.

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