Square Shape Cast Iron Gully Cover with Painting Surface for Drain Away Water Load-Bearing Grade C250

Cast ductile iron rainwater grating is a key component of the stormwater gully system:

• Material: Ductile iron (common grades such as QT500-7). After spheroidization, the graphite inside the cast iron is spherical, providing strength and toughness far superior to ordinary cast iron, close to steel, with excellent compression and impact resistance.
• Function: Serves as the "grate" of the rainwater gully, intercepting debris (leaves, garbage, etc.) while guiding rainwater to quickly flow into the ditch. It is the core component of the "inlet filtration" in urban drainage systems.

• Grid structure: Features a long gap design with optimal porosity to ensure drainage efficiency while blocking large-volume debris. The surface has rough casting marks typical of ductile iron, providing anti-slip and wear-resistant properties.
• Carrying capacity: C250 grade is suitable for small motor vehicle lanes, residential areas, sidewalks, and non-motor vehicle lanes.

• Municipal drainage: Used with concrete or metal drainage ditches at street edges and sidewalks to quickly collect rainwater and prevent road water accumulation.
• Community/park: Installed in drainage outlets of green belts, parking lots, and landscape trails to manage drainage and debris interception, reducing pipe network blockage risks.
• Industrial auxiliary: Used in light-load factory areas for daily rainwater management and initial collection of small amounts of industrial wastewater.

• Durable ductile iron material with a lifespan of 20-50 years
• Anti-theft design (low recycling value + heavy weight)
• Simple and reliable grille structure suitable for most drainage scenarios

This practical component serves as the "first checkpoint" of urban drainage systems. Combining the strength of ductile iron with efficient grille design, it solves the dual challenges of fast drainage and pollution interception, helping prevent urban flooding during heavy rains.