Durable Corundum Refractory Gj-Castable for Extreme Heat Applications. Superior Corrosion Resistance: Excellent chemical corrosion resistance suitable for extreme heat applications. High Mechanical Strength: Compressive strength up to 1400 MPa and flexural strength up to 1400 MPa. Customizable Al2O3 Content: Flexible customization available with Al2O3 content ranging from 45% to 95%. Fast Sample Delivery: Samples can be delivered within 3 days upon request. Rapid Quotation: Price quotes provided within 2 hours after receiving customer information. High Daily Capacity: Production capacity reaches 25 tons per day to meet large orders. OEM and Customization: Offers flexible, minor, and full customization options including sample-based.