scope:

This standard covers the requirements for steel electrical metallic tubing, for use as a raceway for wires or cables of an electrical system. Finished tubing is typically furnished in nominal 10 ft (3.05 m) lengths. It is protected on the exterior surface with a metallic zinc coating or alternate corrosion protection coating (see UL 797 Eighth edition Clauses 5.3.3, 6.2.4, 7.5 and 7.6) and on the interior surface with a zinc or organic coating.

This standard also covers electrical metallic tubing elbows.

Properly assembled systems of steel electrical metallic tubing and elbows, manufactured in accordance with this standard, and other identified fittings provide for the electrical continuity required of an equipment grounding conductor.