Fine Grinding Ceramic Insulator Al2O3 Alumina Ceramic Tube. High Alumina Content Options: Available in 95%, 97%, 99%, and 99.5% alumina content levels. Customizable Standard: Product standards can be customized to meet specific requirements. High Hardness: Hardness exceeds 85 HRA for superior wear resistance. ISO 9001:2015 Certified: Manufacturing process certified under ISO 9001:2015 standards. Fast Delivery Time: Standard delivery within 7 to 15 days for in-stock items. High Temperature Resistance: Operates safely at temperatures up to 1700 degrees Celsius. High Compressive Strength: Compressive strength is at least 620 MPa for durability. OEM and ODM Services: Full OEM and ODM services available for custom manufacturing.