As one of the professional China tungsten crucible manufacturers and suppliers, Hanz Material Technology is able to supply you with high quality tungsten crucible. Welcome to make contact with us. Applications: Tungsten is widely used to produce crucibles and other parts for Sapphire crystal growth and rare-earth melting with its high temperature resistance, low pollution and other good characteristics. Size: We supplies all kinds of Tungsten crucibles,Tungsten groove and the whole set of Tungsten and Molybdenum parts (including heaters, heat insulation screens, sheets and supports etc.) used in hot zone of the sapphire grower according to customer's drawings and specific requirements. Specification of Tungsten Crucibles and Tungsten Tubes: Diameter(mm) Wall Thickness(mm) Length(mm) 30~50 2~10 <1300 50~100 3~15 100~150 3~15 150~200 5~20 200~300 8~20 300~400 8~30 400~450 8~30 450~500 8~30 Specification of Tungsten Groove : Wall Thickness(mm) Diameter(mm) Diameter(mm) Length(mm) 30~50 2~10 2~10 <1300