Manufacturer of American made lightweight cast aluminum slip-on fittings and supplier of schedule 40 aluminum pipe. These fittings can be used to make structures for work, home, or play. Their utmost simplicity is one of the outstanding characteristics of Diamond Aluminum Company’s Slip-On fittings. Practically anyone can build common, everyday usable structures and railings that look professionally built. Infinite variations – railings, frames, display structures, shelters, and enclosures of all types are possible. Need something temporary that you can knock-down? Just loosen the set screws and you can quickly disassemble your creation. Diamond Aluminum Slip-On fittings make professional jobs with “do it yourself” economy! A few Diamond Aluminum Slip-On fittings, some pipe or tubing and a hex key are all that are needed. Utmost simplicity!