As the name suggests, seamless 90-degree elbow can turn in the direction is beneficial. Hose connections to water pumps, deck drains, and valves are frequently made using this method. The primary purpose is same to that of the pipe mentioned earlier, although the diameter is small. A 90 elbow is easily attached to pipes made of many different materials, including rubber, steel, cast iron, copper, and plastic. In other words, seamless 90-degree elbow is used to connect two pipes that are at a right angle to one another. On a level installation, it serves as corner or railing ends.