Thread Less Conduit Systems

Theread less conduit is referred as EMT conduit because its wall is much thinner and lighter compared with rigid conduit of the same nominal size. This type is galvanized on the exterior with a special lubricatingcoating applied to the interior to the permit easier wire pulling. It can be used for both exposed and concealed work provided it will not be subject to severe physical damage and is property against corrosion. It is most commonly used above ground for lightig circuits, control lines and other low power application

Thick wall conduit systems

Thick wall conduit system is made from height strength flat steel that is cold formed and electrically welded in unifromly tube. This conduit is capable of being threaded. The exterior surface is thoroughly coated with zinc applied direcly to the metal so that galvanic protection against corrosion is achieved; the interior surface is protected by special lubricating coating to permit easier wire pulling.

It can be used indoors or outdoors and underground beneath concrete or fill. It can be used in high voltage application