Independent study confirms fiberglass pipe withstands harsh conditions

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RIALTO, CA, May 9, 2014 -- Demonstrating its ability to withstand chemically-harsh conditions, the FLOWTITE™ fiberglass pipe (FRP), manufactured by Thompson Pipe Group, passed the city of Los Angeles's pickle jar test, which examines the physical properties of materials used in sewers through the long-term exposure to corrosive agents.

Products must pass the applicable tests listed in the reference guide, "Greenbook: Standard Plans for Public Works Construction," in order to be specified for jobs in the city and county of Los Angeles. The pickle jar test was conducted by RamTech, an independent laboratory sanctioned by the city, and provides third-party confirmation that FLOWTITE™ can withstand harsh sewer conditions.

As part of the pickle jar test, FLOWTITE™ was exposed to nine different aggressive chemical solutions for more than three months. The test compares the weight, durometer hardness and the axial tensile strength after 112 days of exposure.

The Greenbook, originally published in 1967, is designed to provide specification requirements for public works projects. Currently, more than 200 cities, counties and agencies have adopted it as the standard for public work construction specifications. The Greenbook makes it possible for organizations to receive reliable, trusted data without having to fund their own independent tests.

See also: Flowtite Pipe


FLOWTITE™ is fiberglass reinforced pipe (FRP) and has been on the market place since 1965. FLOWTITE™ has been used in projects all over the world. FLOWTITE™ has many applications and is specified for water pressure, gravity, trenchless, sliplining, and other projects. For more information, visit

About Thompson Pipe Group

Headquartered in Southern California, Thompson Pipe Group is a manufacturer of FLOWTITE™ and other pipe solutions for water, sewage, and industrial applications. Thompson has offices in California, Louisiana and Texas, and is one of few American-owned companies with the ability to manufacture and supply water/wastewater piping in the United States and Canada. For more information, visit


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