`Corrugated Stainless Steel Tubing`

In the 1990s, the gas association was looking for some new way to promote the use of gas, and they wanted a cheaper way than cathodic protection. They came up with this. This is what's called corrugated stainless steel tubing. [Tom produces a length of CSST.] It's got a yellow polyethylene jacket, yellow because it means fuel gas, and it's got ten mil corrugated stainless steel. You can bend this — it's flexible. A plumber can put this in a house nowadays in one day, as opposed to taking black iron pipe which he has to cut to length and thread — that takes three days to install.