Hot dip galvanized rigid steel conduit (UL6 rigid conduit) is manufactured from high-strength steel coil, and produced according to the standard of UL6. The interior surface of our conduit is free from defect with a smooth welded seam. It is hot dipped galvanized inside and outside, so that metal-to-metal contact and galvanic protection against corrosion are provided, and the fur face of the conduit is coated with a clear lacquer coating to inhibit white rust and increase corrosion resistance. And the conduit is threaded on both ends, with a coupling applied to one end and by a size color coded thread protector to the other as per table. The interior surface provides a smooth continuous raceway for easy wire pulling. Our conduit ductility characteristics provide for easy bending, cutting, and threading in the field.