Cast Ductile Iron Rainwater Grille Load-Bearing Grade C250 Square
Shape
Cast ductile iron rainwater grating is a key component of the
stormwater gully system:
1. Basic properties
Material: Ductile iron (common grades such as QT500-7). After
spheroidization, the graphite inside the cast iron is spherical.
The strength and toughness are far superior to ordinary cast iron,
close to steel, and have excellent compression and impact
resistance.
Function: As the "grate" of the rainwater gully, it is responsible
for intercepting debris (leaves, garbage, etc.) and guiding
rainwater to quickly flow into the ditch. It is the core component
of the "inlet filtration" of the urban drainage system.
2. Design and performance
Grid structure: long gap design, reasonable porosity (ensuring
drainage efficiency and blocking large-volume debris); the surface
is rough with casting marks, which is the typical appearance of
ductile iron after casting, and has anti-slip and wear-resistant
properties.
Carrying capacity: C250 is suitable for small motor vehicle lanes,
residential areas, sidewalks, non-motor vehicle lanes and other
scenes.
3. Application scenarios
Municipal drainage: with concrete or metal drainage ditch, used on the edge of streets
and sidewalks, quickly collect rainwater and prevent water
accumulation on the road.
Community/park: used in the drainage outlets of green belts, parking lots, and
landscape trails, taking into account drainage and debris
interception to reduce the risk of pipe network blockage.
Industrial auxiliary: some light-load areas in factory areas will also be used to deal
with daily rainwater and the initial collection of a small amount
of industrial wastewater.
4. Advantages
Ductile iron material is durable (lifespan 20-50 years), anti-theft
(low recycling value + heavy weight), the grille structure is
simple and reliable, and it is suitable for most drainage
scenarios.
In short, this is a practical component of the "first checkpoint"
of urban drainage. Relying on the hard power of ductile iron +
grille design, it solves the problem of "fast drainage + pollution
interception" and silently guards the city from seeing the sea on
rainy days~
