High Durability Rust Proof Large Metal Cast Iron Sand Casting for Impellers

High Durability Rust Proof Large Metal Cast Iron Sand Casting for Impellers. Comprehensive Customization: Dimensions and shapes customized per 2D/3D drawings with CT7-CT10 tolerance. Wide Material Selection: Supply grey iron, ductile iron, carbon steel, cast steel, and aluminum alloys. One-Stop Manufacturing: Full service from pattern making, casting, CNC machining to heat treatment and assembly. ISO Certified Quality: ISO9001:2015 certified with 100% inspection and full dimensional test reports. Flexible Order Quantity: No strict MOQ; accepts single samples and small batches as low as 10-20 pieces. Large Capacity Casting: Handles weights from 0.5kg to 10 tons with max size up to 3000mm. Fast Sample Delivery: Prototype samples delivered in 7-15 working days with wood patterns. Advanced Surface Treatment: Options include shot blasting, painting, galvanizing, and rust-preventive oil.