tantalum tube, tantalum and tantalum rod, tantalum bar, tantalum wire, tantalum foil, tantalum sheet, and other tantalum product purity: 99.9%Standard:ASTM B 521-98 GB/ ... , petroleum, medical care, manufacture and commodity-procesing industries.we offer tantalum and tantalum rod, tantalum bar, tantalum wire, tantalum foil, tantalum sheet, tantalum tube,and other tantalum products