Our 304 and 316 stainless butt weld pipe caps come in a variety of sizes and schedules to accommodate almost any stainless steel pipe system. SS cap schedules include: S/5, S/10, S/40 and S/80. View an overview of our stainless steel product offerings. There are various butt weld cap sizes and weights to choose from. Our pipe sizes and weights chart will show all available size options. Butt weld caps meet the ASTM A403 standard specification 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 chart. Buttweld caps are readily available in 304 stainless and 316 stainless steel from Shaw Stainless & Alloy. View other various grades of stainless steel. View thousands of stainless steel pipe and tubing products and various services Shaw Stainless offers. This Reference Catalog identifies stainless steel butt weld caps and other pipe fittings through specification charts and illustrations. Here is a chart to review theoretical bursting pressures for various stainless steel pipe. A stainless steel butt weld cap is a type of pipe fitting that covers the end of a pipe. Since it can have female threads, it can screw on to the male end of the pipe. It can also be welded on to close the end of the pipe. On a weld, if it is a temporary close, or the contractor wants to add to the piping system in the future, he or she should allow additional pipe before closing so the pipe cap can be cut off and the pipe system extended as needed. This way you will not have less pipe than you need and the new fitting can be attached correctly.