Standard,UL6. Surface finished,Hot dip galvanized(HDG). Trade size is from ... to 6". Threaded(NPT) both ends of the pipe. Rigid conduit is manufactured as UL 6 & ANSI C 80.1.It ... -lasting value and protection for the electrical raceway system.Rigid conduit is threaded both ends,one end with a coupling,another ... are excellent ductility provides easy bending,cutting and joining. Rigid conduit UL6 ANSI C80