1.90 degree titanium elbow. 2.material:Gr1,gr2,gr5,gr7,gr9,gr12,gr10, ... : astm b363,astmb16.9,gb 12459 ,gb/t13401material: pure titanium or titanium alloy Gr1, GR2,GR5,GR7,GR9,GR10,GR12size:DN20Xthickness----DN1200Xthickness ... for welding line:x-ray press test:hydrostatic testWelcome you to choose our titanium elbows.choose queen titanium,choose high quality and satisfaction ...