... nut, screw, ring, wire, foil, sheet, rod, strip, plate, tube, alloys Niobium tube UNS Designation R05400 -- non-alloyed Tantalum,powder metallurgy,concretion ... nut, screw ,ring ,wire, foil, sheet, rod, strip, plate, tube, alloys according to Standard ASTM AMS ASME MIL DMS JIS ... chemical equipment industry, medical industry and civilian industry in USA, UK, Germany, Sweden and some other countries.