Hot-dip galvanized steel gully gratings are drainage grille products made of carbon steel/Q235 and other steel materials through cutting, welding and stamping. The whole product is immersed in molten zinc solution for hot-dip galvanizing treatment. They are mainly used to intercept solid impurities in rainwater runoff and ensure the smooth operation of drainage systems.
Core Product Features
Superior Corrosion Resistance
The thickness of the hot-dip galvanized layer is ≥85μm with strong adhesion. It can be used in harsh outdoor environments such as humidity, acid and alkali for more than 20 years without rusting.
01
High Load-Bearing Capacity
Adopting grid or serrated structure design, the compressive load can reach multiple levels from C250 to F900, meeting the load-bearing requirements of different scenarios such as sidewalks, carriageways and heavy-duty lanes.
02
High Drainage Efficiency
The opening rate of the grating can reach 30% - 50%, allowing rainwater to infiltrate quickly and effectively reducing road ponding.
03
Easy Installation
Lighter than cast iron products, equipped with hooks, supports and other accessories, a single person can complete loading, unloading and maintenance.
04
High Cost-Effectiveness
The cost of steel raw materials is lower than that of ductile iron. Galvanizing treatment extends the service life, resulting in a lower total life cycle cost.
05
Typical Application Scenarios
1.Municipal Roads：Rainwater outlets on urban arterial roads, secondary roads and sidewalks for rapid drainage of road ponding.
2.Industrial Parks：Drainage systems in factory workshops, warehouses and loading areas to intercept waste residue and debris.
3.Residential Communities：Rainwater collection outlets in community roads, parking lots and green belts to prevent sediment from clogging pipelines.
4.Commercial Plazas：Ground drainage in shopping malls and pedestrian streets, balancing aesthetics and practicality.
5.Transportation Hubs：Outdoor platform drainage in airports, high-speed railway stations and ports, adapting to high-flow rainwater environments.
The difference with DI gully grate
|
Comparison Dimension |
Hot-Dip Galvanized Steel Gully Gratings |
Ductile Iron Gully Gratings |
|
Material & Process |
Carbon steel + hot-dip galvanizing |
Ductile iron + painting/dipping |
|
Corrosion Resistance |
Zinc layer isolates air and moisture, long-term corrosion resistance, acid and alkali resistance |
Coating is easy to fall off; cast iron is prone to rust after falling off, requiring regular maintenance |
|
Weight |
Light weight, about 1/3 - 1/2 of cast iron gratings |
Heavy weight, installation requires multi-person collaboration or mechanical assistance |
|
Load-Bearing Capacity |
Medium to high strength, meeting C250 - F900 grades |
Ultra-high strength, can bear heavy loads above F900 |
|
Impact Resistance |
Good toughness, not easy to break but easy to deform under impact |
High rigidity, easy to crack under heavy impact |
|
Appearance & Customization |
Bright zinc layer surface, customizable with different opening shapes |
Rough surface, single color, high customization cost |
|
Cost |
Low raw material and processing cost, high cost-effectiveness |
High raw material cost, relatively high overall price |
|
Application Scenarios |
Medium and light load scenarios such as sidewalks, communities and industrial parks |
Heavy load scenarios such as highways, heavy-duty lanes and docks |
Product parameters
|
Place of Origin |
Hebei, China |
Brand Name |
SND |
|
Surface Treatment |
Bitumen/epoxy/OEM |
Material |
Mild steel |
|
Product name |
Mild steel Grate |
Process |
Sand foundry |
|
Hardness |
HBS 170-230 |
Standard |
GB/T 23858 - 2009 |
|
Certification |
CE ISO9001 |
Load Class |
|
|
Quality Control |
100% Inspected |
Dimensions |
As drawings |
|
Shape |
Square/Circle/OEM |
||
|
Customized Service |
Drawing design |
||
Packaging and delivery
|
Package Solution |
Wooden pallet/OEM |
|
Loading Port |
Tianjin Port/Qingdao Port/OEM |
|
Delivery time |
7-15 Days against QTY |
Welcome contact us for customized dimensions.
Inspection Items
- Material Composition Inspection
- Dimensional Accuracy Inspection
- HDG thickness Inspection
- Surface Quality Inspection
Certifications
SND has fully passed the ISO9001 quality management system certification and CE. During the production process, it implements a number of strict detailed standards and conducts full-process quality control. Our company has well-equipped chemical laboratories and physical performance laboratories. A complete set of testing equipment such as Direct Reading Spectrometer, Metallographic Microscope, Hardness Tester, Universal Material Testing Machine and Pressure test machine can be used to effectively control chemical composition and ensure mechanical performance.
About SND
SND FOUNDRY have been specializing in the production and sales of metal casting products nearly 20 years. It is located in Wu'an Industrial Park, Handan City, Hebei Province. The park is the largest mechanical casting spare parts processing industrial park in Handan, with a complete supporting industry chain and convenient transportation.
The company integrates sand casting, lost foam casting, machining, surface treatment and assembly service one stop. It specializes in providing precision castings of various materials such as cast iron, cast steel, stainless steel, with an annual output 20,000 tons of castings.
FAQ
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