This line of MARZOLF? Two-Piece Flanges is designed to fit OD Tube Stub Ends. MARZOLF? Flanges save money and reduce down time by eliminating the need to cut and reweld piping when installing or replacing Lap Joint flanges behind Stub Ends and Slip On Angle Face Rings. These rings are available with different corrosion resistant coatings including Zinc Electro Plate and E-Coat Epoxy.