... Description Baoji Zhong Bang rare metal materials CO.,LTD holds Tantalum ,Niobium as the dominant products in the scope of ... grades of their metals, sheet, tube, wire ,rod ,crucible , target ,alloy and so on.Tantalum features high melting point , low ... ,metallurgy, chemical processing , hard alloy cutters , aerospace and aviation.Tantalum tube/pipe Material: RO5200, RO5400, RO5252(Ta-2.5W), RO5255(Ta ...