Akai Metal India Manufacture stainless steel flanges according to ASME, EN, ISO and DIN standards. Stainless steel Slip on flanges have an inner diameter that is a bit bigger than the outer diameter of the pipe flange. Stainless steel Slip on flanges has ring located over the end of the pipe and the face of the flanges extends from the pipe end. If Type C stub ends or Type B stub ends are used, these can also be used as lap joint flanges.