We offers 95% - 99.7% High Purity Alumina Tubes. They are produced by slip casting, available as Closed One End or Open Both Ends round single bore tubes. Available Tube Diameter From 2 mm to 150 mm, tube length from 25mm to 2500mm. Our protection tubes offer extreme high temperature stability under reducing, insert and high vacuum condition up to 1700C (99.7%). They also provide extreme wear, abrasion and chemical corrosion resistance under high temperature. MSNjzsy2009@hotmail.com Emailjzsy07@yahoo.com