Aluminum Tubes, Plates, and Pipping Needs

ORNL is requesting a quote for the same or domestic equivalent of an 6" X 4" X 1/2" 6061 ALUMINUM RECTANGLE TUBE, 6" X 2" X 1/4" 6061 ALUMINUM RECTANGLE TUBE, 2" 6061-T651 ALUMINUM PLATE, 4" X 4" X 1/4" 6061-T6 ALUMINUM SQUARE TUBE, 1/2" 6061-T651 ALUMINUM PLATE, 1" 6061-T651 ALUMINUM PLATE, 1/8" (.125") ALUMINUM 6061-T6 SHEET, 2" 6061-T651 ALUMINUM PLATE, 4" SCH 80 6061-T6 ALUMINUM PIPE 4.50" OD X .337" WALL, and 1-1/2" 6061-T651 ALUMINUM PLATE, 1/8" (.125") ALUMINUM 6061-T6 SHEET. FAR 52.211-6, Brand Name or Equal applies.