... ,Gr9 3.Standard is DIN,GB,BS,ASTM titanium fastenersTitanium screw/nut/boltMaterial is Gr1,Gr2,Gr3, ... We are the manufacturer that special in producing titanium products.The titanium parts can be used in medical appliances, chemical ... industry, maritime space, human umplants, auto parts manufacturing, metallurgical industry, power, titanium ...