High Strength Ductile Iron Grate Gully 750mm to 815mm Diameter with 43kg to 63kg Weight for Sewer Outlets

This circular ductile iron rainwater grate utilizes geometric principles to deliver superior safety and durability for sewer outlet applications. The innovative circular design provides optimal performance in demanding infrastructure environments.

• Enhanced load distribution across the entire surface area
• Prevention of accidental falls into manholes
• Increased safety for both pedestrian and vehicle traffic
• Optimal maintenance access space

Support ring weight: 10kg

1. Raw material selection and quality verification
2. Precision melting in controlled furnace environments
3. Refining process to produce high-quality ductile iron
4. Accurate pouring into specialized molds
5. Controlled cooling and demolding procedures
6. Surface polishing and sanding for optimal finish
7. Application of anti-rust paint coating
8. Comprehensive quality inspection and proper storage

• Cast iron alloy spheroidization rate exceeds national standards by 300%
• Advanced surface treatment with vibration sand-shaking and shot blasting
• Less than 0.08% return rate due to surface imperfections
• High-quality asphalt paint coating for enhanced corrosion resistance

SND brings over 20 years of metal goods manufacturing expertise, specializing in multiple casting techniques including sand casting, lost wax, and lost foam processes. Our capabilities extend across various materials including cast iron, steel, stainless steel, and aluminum, with complete surface finishing and assembly services.

Our ISO9001-certified quality control system ensures consistent product excellence through comprehensive testing including spectrometer analysis, ultrasonic and magnetic testing, permeability and elongation measurements, and tensile and yield strength evaluations.