Slip-on flanges are known for their low materials cost and easy installation. One of the added advantages of these flanges is that they can also be used as lap-joint flanges if Type B or Type C ends are being handled.There is a wide range of diameters and low-pressure models to choose from. Unlike welding neck flanges, this flange does not have a neck to rest on the pipe, and therefore double welding is necessary.

The inner bore of the slip on flange is a little larger than the pipe OD,to make sure the pipe or fitting end can slip into the flange.The slip on flange is fillet welded with the pipe or fitting,different with the butt welding method of weld neck flange, and the pipe no need to do the bevel end,just square end is ok for welding,this is also different.Commonly,the slip on flange can be fillet welded with the pipe on the two sides.It can make sure the joint quality with the pipe.

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