Metal Slip-On Raised Face Flanges, Standard : ANSI : ANSI B16.5, ANSI B16.47, MSS SP44, ANSI B16.36

Circular pipe flange which is slipped over the end of a pipe and welded in. We offer high quality steel slip on flanges that are manufactured stringently following latest technology. Precisely engineered, these inconel flanges possess.
The slip-on flange may be attached to the end of a piece of pipe or to one or more ends of a pipefitting. The slip-on flange is positioned so the inserted end of the pipe or fitting is set back or short of the flange face by the thickness of the pipe wall plus 1/8 of an inch. This allows for a fillet weld inside the SO flange equal to the thickness of the pipe without doing any damage to the flange face. The back or outside of the flange is also welded with a fillet weld.
A variation of the Slip-on flange also exists. This is the Slip-on Reducing Flange. This is simply a larger (say a 14") Slip-on flange blank that, instead of the Center (pipe) hole being cut out (or drilled out) for 14" pipe it is cut out for a 6" pipe. The SO Reducing flange is basically used for reducing the line size where space limitations will not allow the length of a weld neck flange and reducer combination. The use of the Slip-on Reducing Flange should only be used where the flow direction is from the smaller size into the larger size.
These are available in all types and pressures and are widely used for pipe-to-pipe connections. The reducing flange includes a flange with one specified diameter having a bore of a different and smaller diameter. Except for the bore and hub dimensions, the reducing flange will have dimensions of the larger pipe size. To increase the size of the flange, these are used at the outlet side of the expansion joint. It is the most economical method to make a transition in size.