Flexible gas lines have virtually replaced immobile iron pipes over the past 30 years. But the flimsier “corrugated stainless steel tubing” — commonly called CSST — can pose a much greater fire risk, ...
Americans took notice of the new product, and in 1989, standards were released for how to install it. Contractors grew to love the stuff. It took a third of time to install as the old black iron pipe ...
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