Methods and an assembly for manufacturing a fluid distribution system are provided herein. The method includes providing a first distribution line configured to channel a fluid in a first direction and coupling at least one internal support member to an outer surface of the first distribution line. The at least one internal support member includes a plurality of support legs extending radially outward therefrom. The method also includes aligning a second distribution line concentrically with and circumscribing the first distribution line. The second distribution line is configured to channel the fluid in an opposite second direction. The method further includes coupling the plurality of support legs to an inner surface of the second distribution line.