316 Pipe [316 pipe](https://www.octalsteel.com/resources/316l-stainless-steel-pipe/) contains about 16–18% chromium, 10–14% nickel, and 2–3% molybdenum, giving it stronger resistance to chloride corrosion than 304 pipe in marine, chemical, and process piping service. https://www.octalsteel.com/resources/316l-stainless-steel-pipe/