Safety of Corrugated Steel Tubing Investigated Following Fires.
For three months, NBC 5 Investigates looked at the safety of flexible gas lines known as CSST, corrugated stainless steel tubing. It’s a product used in millions of newer homes and is approved for use in national building codes.

But CSST has also been blamed for fires across the country where fire officials and insurance industry investigators have said energy from lightning jumped or arced onto the CSST punching holes in the tubes releasing and igniting gas.

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