Lap joint flanges have a beveled edge on their inside diameter and fit over a pipe. They are most commonly used with a stub end, which is typically welded to the pipe, leaving the lap joint free to rotate around it. Lap joint flanges are especially useful because they eliminate the possibility of issues with bolt hole alignment. They are often used in applications that need to be dismantled frequently. World Wide Metric offers lap joint flanges according to DIN EN 1092-1/02 in both carbon steel and stainless steel.