EVT 90 Degree EMT elbow (bend) is a UL approval product that is manufactured from Electrical Metallic Tubing. It has a uniform wall thickness, a defect free interior surface and continuously welded seams.

90 Degree EMT conduit bend is available in sizes up to 4". The interior and exterior surface of conduit bend is galvanized for corrosion protection. EMT Elbow can be installed indoors and outdoors, in both dry and wet locations.

The 90° EMT Elbow is used to connect the EMT conduit and change the direction of the run. EMT conduit elbow has a large radius to allow easy wire pulling.
https://www.evt-electrical.com/emt-fittings/emt-elbow.html