Considerations for Corrugated Stainless Tubing

Corrugated Stainless Steel Tubing (CSST) is thin-walled metallic tubing that can be used as alternative gas piping material to steel pipe. CSST may have been used in your structure if it was built after 1990 or its gas piping system has been replaced or modified since then. CSST may have a yellow or black plastic exterior coating and would typically be present inside walls and through and along floor and ceiling joists.  It is not the same as the flexible appliance connectors that connect to gas appliances.

Protect Against Lightning

To help protect structures from potential lightning strikes, the installer of CSST and/or the owner/operator of the structure where the CSST is used should consider installing an appropriate lightning protection system pursuant to NFPA 780 or other recognized standards.

  • Class Action Lawsuit involving CSST

    In 2002, four manufacturers of CSST settled a class action lawsuit in which it was alleged by plaintiffs, but denied by defendants, that CSST posed an unreasonable risk of gas leaks and fire due to lightning strikes. For more information on the CSST Settlement, visit their website* or call the toll-free Settlement Information Line at 1-800-420-2916.

    *By clicking the link, you will leave and transfer directly to the website of a third party provider which is not part of SDG&E. The Terms and Conditions and Privacy Policy on that website will apply.

  • CSST Installation Inspections

    We do not provide inspection services for CSST installations. If you are unsure whether CSST was installed in your structure, please contact your builder, contractor or a licensed professional for an evaluation or more information.