We are an eminent supplier of Stainless Steel Sorf Flanges for our huge clientele base. These are a form of flat welding flange. Flat welding is only used to weld the outer layer, not the inner layer. In general, a flat welding flange, such as an ASME B16. They are easy to use in fabricated applications. Stainless Steel Sorf Flanges are attached to the pipe by filler welding at the hub and at the end of the pipe inside the flanges. These are available in the wide variety of sizes and application.