High Strength Ductile Iron Grate Gully with Spray Paint for Sewer Outlets 20kg to 30kg Compliant with DIN,BS,JIS,ASTM Standards

The ductile iron rainwater grate features a circular design that utilizes geometric principles for enhanced safety and durability. The circular shape ensures:

• Superior load distribution across the entire surface
• Prevention of accidental falls into the manhole
• Increased safety for both pedestrians and vehicles
• Optimal space for maintenance access

Support ring weight: 10kg

Our comprehensive production process ensures the highest quality standards:

1. Raw material selection
2. Melting in furnace
3. Refining to produce high-quality iron
4. Precision pouring into molds
5. Controlled cooling and demolding
6. Surface polishing and sanding
7. Application of anti-rust paint finish
8. Quality inspection and 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 durability

SND has over 20 years of experience in metal goods manufacturing, specializing in:

• Multiple casting techniques (sand, lost wax, lost foam)
• Precision machining capabilities
• Materials including cast iron, steel, stainless steel, and aluminum
• Complete surface finishing and assembly services

Our products serve diverse industries including:

• Automotive and rail transportation
• Agricultural machinery
• Chemical and energy sectors
• Construction and infrastructure

Our ISO9001-certified quality control system ensures consistent product excellence through comprehensive testing including:

• Spectrometer analysis
• Ultrasonic and magnetic testing
• Permeability and elongation measurements
• Tensile and yield strength evaluations