Serrated Anti-Skid Galvanized Steel Gratings are grid products made of mild steel (e.g., Q235, ASTM A36). They are manufactured by pressing serrations on load-bearing flat bars, welding with cross bars, and then undergoing hot-dip galvanization as a whole. The surface serrated structure (tooth depth 1.5-2mm, tooth pitch 8-10mm) significantly improves friction coefficient, while the zinc layer forms a metallurgical protective coating, combining anti-slip safety and corrosion resistance.

Core Product Features

Superior Anti-Slip Performance

1.Friction coefficient reaches 0.75 in dry conditions and ≥0.6 in wet environments (complying with GB/T 4100-2015 R11 anti-slip standard). It can reach 0.82 with additional coating in oily scenarios, reducing slip accidents by over 68%.

Long-Term Corrosion Resistance

Hot-dip galvanized layer meets ASTM A123 standard, with corrosion resistance over 20 years in salt spray environments. The metallurgical bonding between coating and steel prevents peeling.

High Load-Bearing Capacity

Uniform load capacity ranges from 1.5-50kN/㎡. The 303/30/100 specification can withstand 5 tons/㎡, suitable for forklifts and light vehicles.

Efficient Drainage & Ventilation

35%-60% opening rate enables 8x higher liquid passing efficiency than solid plates, quickly draining water and oil to reduce slip hazards.

Flexible Customization

Supports customization of load-bearing bar specifications (20×3 to 100×10mm), spacing (12.5-100mm) and shapes to fit different installation scenarios.

Typical Application Scenarios

1.Industrial Sector：Steel mill blast furnace platforms, chemical plant operating walkways, coal mine maintenance passages, suitable for harsh environments like high temperature, oil pollution and humidity.
2.Municipal Infrastructure：Bridge sidewalks, overpasses, rainwater gratings. It solved pedestrian slip issues in rainy seasons, achieving zero slip accidents in a 350MW thermal power plant application.
3.Transportation Hubs：Port loading areas, airport apron maintenance lanes, parking lot ramps, withstanding vehicle rolling and water erosion.
4.Energy Industry：Nuclear power plant turbine rooms, hydropower station corridors, PV plant maintenance platforms, adapting to oil pollution and high humidity scenarios.
5.Marine Engineering：Ship decks, offshore drilling platform walkways. The anti-slip property of Serrated Anti-Skid Galvanized Steel Gratings resists seawater splashing and oil contamination.

The difference with DI gully grate

Comparison Dimension	Hot-Dip Galvanized Steel Gully Gratings	Ductile Iron Gully Gratings
Anti-slip performance	Serrated structure + high coefficient of friction (0.6-0.82), reliable even in wet oil environments.	3mm raised pattern (coefficient of friction 0.4-0.5), makes it slippery when oily.
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 Day 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

Q: 1.How long can the anti-slip effect of Serrated Anti-Skid Galvanized Steel Gratings last?

A: The serrated structure is physically formed without wear attenuation. The galvanized layer protects the base material from corrosion, so the anti-slip performance can last more than 20 years under normal use.

Q: 2.How to choose the appropriate load-bearing specification?

A: Choose 25×3mm flat bars (1.5kN/㎡) for pedestrian areas, 38×5mm (15kN/㎡) for forklift areas, 50×8mm (50kN/㎡) for vehicle passages. Load test reports are available.

Q: 3.Which international standards does the product comply with?

A: It complies with ASTM A36 (material), ASTM A123 (galvanization), ANSI/NAAMM MBG 531-88 (grating) and GB/T 4100-2015 (anti-slip) standards.

Q: 4.Will the serrated structure increase cleaning difficulty?

A: No. The 8-10mm tooth pitch allows cleaning with high-pressure water guns or steel brushes. Oil stains can be cleaned with neutral detergents, easier to maintain than patterned cast iron.

Q: 5.Can it be used in sub-zero or high-temperature environments?

A: It tolerates -40℃ to 300℃. Snow-melting agent holes can be reserved in northern areas. For high-temperature scenarios, thickened flat bars (≥5mm) are recommended.

Hot Tags: serrated anti-skid galvanized steel gratings, China serrated anti-skid galvanized steel gratings manufacturers, suppliers, factory, Industrie Rost, steel grating panel, Walkway Grating, Stainless Steel Grating Dubai, Bushfire Resistant Grating, Hot Dip Galvanized Steel Gully Gratings