Manufactured as the heaviest-gauge tubing available, RMC stands up to the most challenging physical environments. Our RMC is hot-dip galvanized and then coated in layers of chromate conversion and organic polymer for extra protection. This makes it especially strong and resistant to environmental and mechanical corrosion. A number of rigorous quality verifications must be passed — including bend and thread testing — before any RMC is approved to leave our facility. This is 2-1/2in x 10ft, GRC Rigid Conduit, Galvanized Steel conduit.