Cast Ductile Iron Rainwater Grating Ditch Cover Drainage Channel
1. Material characteristics
The ductile iron rainwater grille ditch cover is cast with ductile
iron QT500-7. The cast iron is spheroidized by a spheroidizing
agent, so that the internal structure of the cast iron is more
tightly combined, the density is significantly improved, and then
it has a series of excellent properties such as high strength and
good toughness, and the comprehensive performance is close to that
of steel. Its tensile strength ób≥420MPa, yield strength ós≥300MPa,
and elongation ≥7%. This combination of high strength and good
toughness enables the product to withstand repeated rolling by
heavy-loaded vehicles, and it is not easy to break or deform after
long-term use, which greatly reduces the probability of safety
accidents such as "urban black holes".
2. Structural design
Grille design: The grille part is usually designed in a variety of forms, such as
the common flat grate type, partial ditch type, combined type,
etc., and there are different installation forms and quantity
combinations such as single grate, double grate, and multiple grate
to meet the drainage needs of different areas. For example, in some
main roads with heavy traffic, multi-grid combined rainwater
grilles are often used, which can quickly collect rainwater on the
road surface and improve drainage efficiency; while in sidewalks or
communities, single-grid or double-grid flat-grid grilles are more
common, which not only meet drainage requirements but are also
relatively economical and practical. The size and distribution of
the grille pores have been carefully designed. While ensuring
efficient drainage, they can effectively intercept debris such as
leaves, garbage, and branches to prevent these debris from entering
the rainwater pipes and causing blockages, reducing the workload
and cost of later pipe cleaning.
Ditch cover design: The ditch cover works closely with the grille to close and protect
the ditch. Its size and shape are precisely adapted to the ditch
and are firmly installed. Some ditch covers also use special
connection designs, such as high-strength bolt connections or hinge
designs, which not only enhance the anti-theft performance of the
manhole cover, but also reduce the displacement and noise caused by
vehicle rolling. At the same time, anti-slip patterns are usually
designed on the surface of the manhole cover to further improve the
safety of pedestrians walking on rainy days.
GROUP PROFILE
SND has been producing and selling metal goods for about 20
years.By using manufacturing techniques including sand casting,
lost wax casting, lost foam casting, and precision machining, the
company has been supplying goods made of materials like cast iron,
steel, stainless steel, aluminum, etc. Additionally offered are
surface finishing and assembly services.
Our company has successfully created products in a variety of
industries, including automotive, rail transportation, agricultural
machinery, chemical, energy, electricity, water, air compressor,
and construction, thanks to our consistent efforts over the past
few years.
Our factories' ISO9001-accredited quality control systems guarantee
a consistent and dependable quality for each and every component.
Spectrometer, ultrasonic, magnetic, permeability, elongation,
tensile/yield strength, and other inspections are carried out as
part of routine production procedures.
