Butt-welded Megalets are Branch Outlet Fittings (also known as Olets) used t to connect two pipes of different or same sizes at a 90° angle. Butt-welded Megalets meet the reinforcement requirements of applicable piping codes, such as ASME B31.1, B31.3, B31.4, and B31.8. They are also fully compliant with the Standard Practice MSS-SP-97.