Product Name: Quarts Protection Tube Model NO.: GT-0013 Temper: No Need Alloy: Non-alloy Grade: 1000 Series Surface Treatment: Brushed Shape: Round Trademark: SHANGTAO Transport Package: Plywood Case Specification: RoHS Origin: Shanghai Product Description Provide customers a comprehensive purchasing platform of industrial and electric heat ceramic productsDescriptionAlumina (Al2O3) has a wide application due to its versatility and low material cost. Alumina possesses a high melting point, strong hardness, and good chemical stability, making it a good material to withstand high temperature and chemical corrosion. Our alumina furnace tubes, alumina thermocouple protection tubes and insulators, and alumina rods are available in a variety of diameters and lengths. Call for any custom production request.