... tube, bar,plate,etc Changsha south tantalum niobium Co.,Ltd specialize in refractory metals, for research & development manufacture ... 3. 0mm up to 120mm max. X random length. 97. 5% tantalum, 2. 5% tungsten, as per ASTM ... to 20mm thickness x Width up to800mm x Length Tantalum 97. 5% , Tungsten 2. 5% , as per ... to 6mm Wall thickness x Length 6 meters max. Tantalum 97. 5% , Tungsten 2. 5% , as per ASTM ...