316L Stainless Steel VS DUPLEX 2205 316L stainless steel pipe is widely used in the chemical industry due to its excellent corrosion resistance. It has 2-3% molybdenum element, and belongs to the derivative of 18-8 austenitic stainless steel. As for Duplex 2205 pipe, it has been added with nitrogen to improve its partial corrosion resistance. […]… Learn more.