The threadless conduit without screws is a cable protection pipe used in various electrical wiring operations. The ends of the conduits are connected using snap-together connectors instead of screws, thus installation is easy. As a type of hot dip galvanized rigid steel conduit fabricated per KS C 8401, the plain conduit is widely used in a number of countries around the world (Japan, Southeast Asia, U.S.A. etc.). With excellent workability and economic efficiency, this is an optimal solution for new building construction and remolding projects.