We carry an extensive inventory of ASTM A403 stainless steel butt weld fittings to complement our stainless pipe. Our high quality, stainless steel butt weld fitting products include long and short radius elbows in various degrees, equal and reducing tees, cross and reducing cross fittings, butt weld concentric and eccentric reducers, caps and stub end fittings and other products. View an overview of our stainless steel product offerings. Butt weld fittings are generally manufactured to ASTM A403 with dimensional tolerances in accordance with MSS SP-43 for schedules 5s and 10s, and with ANSI B16.9 for schedules heavier than 10s. View the standard specifications. Unsure about what grade of stainless is needed or available for your project? Learn about our inventory, functionality and application of our various grades of stainless steel. We designed our Reference Catalog for you to identify all of the products and services we offer our customers. This catalog identifies our stainless steel products and includes specification charts and general dimensional illustrations to help you identify available products in our inventory for this and future projects. Here is a chart to review theoretical bursting pressures for various stainless steel pipe. Butt weld pipe fittings are engineered to be welded at the job site to connect piping that allows a change in direction or other specifications such as reducing or increasing the diameter of pipe being used or branching or ending the pipe. This creates an efficient system of pipe that is used to safely transport fluids such as oil or chemicals.