Sliding pipe clamps. These pipe flanges slide on the pipe. They are made with an inside diameter slightly larger than the outside diameter of the pipe. These fasteners are connected to the pipe via a corner weld at the top and bottom of the flange. The weld neck flanges have a longer life than the slip-on flanges.

The sliding flanges are all slightly larger than the O. D. of the pipe. They are preferred to weld neck flanges by many users because of their lower initial cost, but the final cost of installation is probably not much less than that of the weld neck flange due to the weld additional involved.

Advantages of using Highborn Slip-On flanges are as follows:

Low cost installation
Less time needed to spent on ensuring the accuracy of the cut pipe
They are somewhat easier to align
The slip-on flanges have low hub because the pipe slips into the flange before welding
The flange is welded both inside and outside to provide sufficient strength
They prevent leakage
They are preferred to weld neck flanges by many users because of their lower initial cost, but the final cost of installation is probably not much less than that of the weld neck flange due to the weld additional involved.