***** niobium tubes niobium capillary material: pure niobium, niobium content: 99.95, 99.99. type: seamless tube, welded tube size: (1.0-80.0mm) outer diameter, wall thickness: 0.2-5.0, l: 500-5000mm application: niobium is used for steel alloys, arc welding, and superconductivity research. other products: molybdenum sheets, tzm molybdenum alloy rods, tungsten electrodes, titanium rods, nickel wires, w, ni, mo, ti, zirconium, stainless steel capillary pipe, stainless steel welding electrodes wires, tantalum, niobium.