Slip On Pipe Flanges

Slip-on flanges are designed to slide over the outside diameter of the pipe to which it will be welded. These flanges are attached to the pipe by fillet welding at the hub and at the end of the pipe inside the flange. Slip-on pipe flanges slip over the pipe. Slip-on pipe flanges are typically machined with an inside diameter of the pipe flange slightly larger than the outside diameter of the pipe. This allows the flange to slide over the pipe but to still have a somewhat snug fit. Slip-on pipe flanges are secured to the pipe with a fillet weld at the top and the bottom of the flanges. Further these pipe flanges are categorized as a ring or a hub. Both ring and hub pipe flanges are considered slip on pipe flanges because they both slip over the pipe. Slip on pipe flanges that consist of a flat ring have published specifications that range from 1/2" thru 144". Slip on Pipe flanges with a hub have published specifications that range from 1/2" thru 96".