Corrugated stainless steel tubing
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Corrugated Stainless Steel Tubing (CSST) is a type of conduit used for natural gas heating in homes. It was introduced in the United States in 1988. [1] CSST consists of a continuous, flexible stainless-steel pipe with an exterior PVC covering. The piping is produced in coils that are air-tested for leaks.[2]
In the United States, about 500,000 new homes per year have CSST installed; that number is about half of the number of new homes that have natural gas for heating or cooking.[1] As of 2007, about 2 million homes in the United States had CSST installed.[3]
CSST is installed much like electrical wiring, and thus more quickly than traditional black-steel pipe,[1] but the cost of the material is several times more than black-steel pipe.
In mid-2007, four CSST makers settled a class-action lawsuit. The settlement provides money to fix problem pipes The settlement provided money to fix problem pipes by bonding the CSST to the electrical systems with thicker wire.[3]
[edit] References
- ^ a b c Matthew Brady (October 15, 2008). "Gas lines ignite cause for concern". Angie's List Magazine. http://magazine.angieslist.com/story/special-report_flexible-gas-lines-bear-inspection.
- ^ Alan J. Heavens (July 29, 2006). "Shortages Persist In Building Materials Even as Demand for New Homes Falls, Cost of Cement and Copper Skyrockets". Philadelphia Inquirer. http://www.washingtonpost.com/wp-dyn/content/article/2006/07/28/AR2006072800771_pf.html.
- ^ a b "Common Gas Pipes Pose Fire Hazard; CSST Pipe, Installed in Many Homes, Can Ignite If Struck by Lightning". ABC News. October 16, 2007. http://abcnews.go.com/GMA/Consumer/Story?id=3736209&page=1.
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