Factory Direct Steel Serrated Anti‑Slip Stair Tread

Steel serrated anti‑slip stair treads provide a walking surface designed to reduce slip hazards in industrial environments.

The tread consists of a hot‑rolled steel plate with a longitudinal serration pattern that increases friction underfoot.

Material Specifications

Manufacturers select structural carbon steel grades such as S275JR or S355J2 for their yield strength and weldability.

Plate thickness typically ranges from 5 mm to 8 mm, while the serration depth is formed by press‑forming to 2.5 mm to 3.5 mm.

Surface treatment options include hot‑dip galvanizing, powder coating, or a bare finish for subsequent painting.

Parameter	Typical Value	Customizable Options
Steel Grade	S275JR (S355J2 optional)	Higher strength or stainless grades on request
Thickness	5 mm – 8 mm	Specific thickness per project
Serration Depth	2.5 mm – 3.5 mm	Adjustable 2 mm – 4 mm
Width	200 mm – 350 mm	Custom widths in 25 mm increments
Length	Up to 6000 mm	Cut‑to‑size, standard stock lengths available
Surface Finish	Hot‑dip galvanized	Powder coating, epoxy primer, bare

Design Features

The serration pattern features parallel ribs spaced at 20 mm intervals, each rib cut with a 45° flank angle that creates multiple micro‑edges for foot traction.

A down‑turned nose of 10° to 15° prevents foot overhang and improves edge durability.

Optional drainage slots machined into the plate allow water or debris to escape, reducing hydrodynamic lift.

Performance Characteristics

Slip resistance measured by the DIN 51130 ramp test typically yields an R10 rating for serrated steel treads, indicating suitability for areas with occasional oil or water contamination.

Load capacity depends on stringer spacing; a 6 mm thick tread spanning 600 mm between supports can sustain a uniformly distributed load of 3.5 kN/m² without exceeding an allowable deflection of L/200.

Hot‑dip galvanizing provides an average zinc coating thickness of 55 µm, offering protection in mildly corrosive atmospheres.

Charpy V‑notch impact values for S355J2 exceed 27 J at –20 °C, ensuring toughness under low‑temperature service.

The serration geometry distributes stress concentrations, which improves fatigue life under cyclic loading compared with a plain plate.

Applications

Industrial facilities choose serrated steel treads where durability, low maintenance, and predictable slip performance are required.

The combination of high‑strength steel and a proven tread profile makes them suitable for environments subject to heavy foot traffic, mechanical loads, and exposure to contaminants.

• Manufacturing plants – treads withstand fork‑lift traffic and resist oil spillage, maintaining slip resistance over long service cycles.
• Power stations – the non‑combustible steel construction meets fire safety standards while providing reliable footing on elevated walkways.
• Transportation infrastructure – treads installed on stairways of stations and bridges endure dynamic loads from passenger flow and environmental exposure.
• Food processing facilities – smooth, cleanable surfaces combined with corrosion‑resistant coatings satisfy hygiene requirements.

Installation Guidelines

Installation typically involves welding or bolting the tread to structural stringers using pre‑drilled holes or welded studs.

Alignment tolerances of ±2 mm in pitch and ±1 mm in height ensure uniform load distribution across the tread series.

Fastener torque should follow the manufacturer’s specifications to prevent loosening under vibration.

Quality Assurance

Quality control follows a documented procedure that verifies dimensional accuracy, material properties, and surface treatment consistency.

Each batch undergoes random sampling for mechanical testing and visual inspection.

• Dimensional tolerance – length ±2 mm, width ±1 mm, thickness ±0.2 mm.
• Yield strength – verified via tensile test, minimum 275 MPa for S275JR.
• Coating thickness – galvanized zinc measured by magnetic induction, target 55 µm ±10 µm.
• Serration depth – measured with profile projector, target 3 mm ±0.3 mm.
• Visual inspection – free of burrs, cracks, or coating holidays.

Customization Options

Manufacturers can adjust several parameters to match project‑specific requirements without changing the fundamental tread concept.

Changes are limited to geometry, hole pattern, and finish while retaining the proven serration profile.

• Tread width – available from 200 mm to 350 mm in 25 mm increments.
• Length – cut to size up to 6000 mm, with standard stock lengths of 1000 mm, 1500 mm, 2000 mm.
• Serration pitch and depth – adjustable from 15 mm to 30 mm pitch and 2 mm to 4 mm depth.
• Nose angle – options of 0°, 10°, or 15° down‑turn.
• Hole pattern – custom drilling or welding stud placement per customer drawing.
• Coating type – hot‑dip galvanizing, powder coating (RAL colors), or epoxy primer for field painting.

Packaging & Logistics

Finished treads are bundled to protect edges and surfaces during transit, facilitating efficient handling at destination.

Bundle configurations are optimized for container loading and ease of unloading.

• Bundle size – typically 5 to 10 treads per bundle, secured with steel straps.
• Corner guards – polypropylene or steel angles protect tread ends from impact.
• Wrap – stretch‑film applied to each bundle to resist moisture and dust.
• Pallets – wooden pallets for domestic shipments, steel pallets for export to meet ISPM‑15 standards.
• Container loading – bundles arranged to maximize 20‑ft or 40‑ft capacity, with weight distribution calculated per container rating.

FAQ

Can dimensions be customized?

Yes, tread width, length, serration pitch, depth, and nose angle can be adjusted to project specifications; custom hole patterns are also available.

What information is required before quotation?

Required details include tread width, length, thickness, serration pattern, hole layout, desired finish, and quantity.

What materials are available?

Standard grades are S275JR and S355J2; higher strength or stainless steel grades can be supplied upon request.

How is quality inspected?

Inspection includes dimensional checks, tensile testing, coating thickness measurement, serration depth verification, and visual defect review.

How are export shipments protected?

Treads are bundled with corner guards, stretch‑film wrapped, and placed on steel pallets that comply with international shipping standards.

Contact

For technical data sheets, sample requests, or project‑specific quotations, contact our export department via the link below.

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