Stainless Steel 304 Electric Fusion Welded Pipe is a steel pipe with a circular hollow section welded using an electric fusion welding method. The Stainless Steel 304 EFW Pipe is made of different materials, including iron, nickel, chromium, and manganese, which comprise most of the alloy composition. Also, small amounts of carbon, sulfur, and silicon play important roles in the alloy's properties.