Standard,UL6. Surface finished,Hot dip galvanized(HDG). Trade size is from 1/2" to 6". Threaded(NPT) both ends of the pipe. Rigid conduit is manufactured as UL 6 & ANSI C 80.1.It is long-lasting value and protection for the electrical raceway system.Rigid conduit is threaded both ends,one end with a coupling,another end with a plastic cap.Our products manufactured from good material,we have our ...