Nitech Stainless Inc is among the best Stainless Steel Slip On Flanges Manufacturer in India, A Stainless Steel Slip-On Flange is a flange that slides over the end of a pipe and is then welded in place. It has a slightly larger inside diameter than the pipe's external diameter, which allows it to easily glide over and position itself during welding. The flange is then welded both inside and out to provide appropriate strength and prevent leaks.