4710-01-297-0058 (340 18980 402234018980)
NSN 4710-01-297-0058 (NIIN 01-297-0058) is a metallic tube in Federal Supply Class 4710, Pipe, Tube And Rigid Tubing — a straight, hollow product, welded or seamless, of round, square, or any other cross section and continuous periphery. Manufacturer part number 340 18980 402234018980; also referenced as 4022 340 1898, 4022 340 18980 (Chart Inc. - Process Systems).
NIIN assigned March 1989; DEMIL A (none required); unit of issue EA (each), $2,197.80 gov standard price; ships at 0.35 lb / 0.0592 cu ft.