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Help CenterSteel Sheet & Plate & Checkered Steel Plate，EN10025、JIS G3101、ASTM A36、ISO 630
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1. Product Overview
Checkered steel plate, also known as anti-slip plate or tread plate, is hot rolled carbon base plate integrally embossed with concave-convex patterns via special rolling rolls. Patterns are metallurgically bonded to substrate without peeling. The raised single-side texture greatly increases surface friction, integrating anti-slip, wear resistance, load bearing, water drainage, dust prevention and decorative performance. Divided into hot rolled black checkered plate, hot-dip galvanized checkered plate, HSLA checkered plate and weather resistant checkered plate. Different from flat steel plate, it prevents slipping under wet, oily and open-air conditions, widely used for industrial platforms, ship walkways, stair treads, truck cargo floors and port mine anti-slip ground, universal safety anti-slip structural steel.
2. Applicable Standards
Domestic Chinese Standards
GB/T 3277 Checkered Steel Plate (Core Standard)
GB/T 700 Carbon Structural Steel
GB/T 1591 High Strength Low Alloy Structural Steel
GB/T 4171 High Weather Resistant Structural Steel
GB/T 2518 Continuous Hot-Dip Galvanized Steel Sheet & Strip (Galvanized Checkered Plate)
International Export Standards
EN10025, JIS G3101, ASTM A36, ISO 630
Supporting Certifications
SGS mechanical property test report, original Mill Test Certificate (MTC), CE structural certification, classification society test report (for marine grade plate)
3. Main Material Grades (Stainless Steel Excluded)
3.1 Ordinary Carbon Checkered Plate (Indoor Dry General Use)
Q235B, cost-effective with excellent bending & weldability, ideal for factory stairs and light-duty platforms
3.2 HSLA High Strength Checkered Plate (Heavy Load, Forklift Access Platform)
Q355B, Q355NH, high yield strength with anti-deformation capacity, for ports, heavy workshops and truck floors
3.3 Hot-Dip Galvanized Checkered Plate (Humid & Mild Corrosion Environment)
Q235B+Z, Q355B+Z, integral galvanization for moisture & rust resistance, applicable for basements, water plants and breeding workshops
3.4 Weather Resistant Checkered Plate (Open-Air & Coastal Factory)
Q345GNH, anti-UV & salt spray, reduce frequent repainting maintenance for outdoor walkways and bridge pedestrian decks
4. Main Pattern Types & Application Scenarios
Lentil Pattern (Best Anti-Slip, Mainstream Grade)Dense oval raised grains with maximum friction performance, outstanding anti-slip effect under water & oil pollution; for ship decks, chemical workshops, maintenance platforms and garage ramps
Diamond Pattern (Balanced Anti-Slip & Decoration)Regular uniform grains with even force distribution and neat appearance; factory walkways, stair treads, warehouse floors and municipal pedestrian platforms
Dot Pattern (Soft Anti-Slip, No Scratches on Workpieces)Smooth round protrusions that avoid scratching equipment bottoms; precision equipment workshops, light storage racks and instrument operation tables
5. Complete Production Process
Qualified slab heating → Hot continuous rolling of base plate → Integrated embossing via dedicated pattern rolls → Cooling, straightening & edge cutting → Shot blasting to remove mill scale (galvanized substrate transferred to hot-dip galvanizing procedure) → Precision dimension inspection → Sampling mechanical test → Marking & spraying → Edge trimming to flat finish → Anti-rust oil coating / galvanizing passivation → Steel-wood pallet bundling & warehousing
6. Core Technical Parameters
6.1 Size Range
Base plate thickness (excluding pattern protrusion): 2.0mm～12mmLight load: 2–4mm; Medium load: 4–6mm; Heavy load: 6–12mm
Standard width: 1000mm, 1250mm, 1500mm, customized maximum 1800mm wide
Standard fixed length: 2000mm, 4000mm, 6000mm, 8000mm, custom cutting length available
Pattern protrusion height: ≥20% of base plate thickness, regular range 0.5–2mm, wear-resistant solid grains
6.2 Dimension Tolerance
Base plate thickness tolerance: ±0.3mm for thickness ≤3mm; ±0.4mm for thickness ＞3mm; width tolerance ±10mm; flat plate free of warpage & camber
6.3 Reference Mechanical Properties
Q235B: Yield ≥235MPa, Tensile 375–500MPa, Elongation ≥25%, intact after 180° cold bend without cracking
Q355B: Yield ≥355MPa, Tensile 470–630MPa, Elongation ≥21%, anti-deformation under heavy load
6.4 Surface Requirements
Complete & clear patterns without missing grains, indentations or scars; flat reverse side free of lamination, bubbles and penetrating cracks; uniform zinc coating without missing plating for galvanized checkered plate
7. Core Product Advantages
Integral rolled pattern with high anti-slip safety factorOne-piece formed grains never peel off; concave-convex structure quickly drains water & oil to eliminate slipping risk under humid oily environment, fully comply with factory safety standards.
Graded load bearing for all light & heavy duty scenariosFull thickness range from 2mm to 12mm, matching light stairs to heavy forklift passages; HSLA grade resists rolling deformation under long-term heavy load.
Multiple anti-corrosion options extend outdoor service lifeBlack bare plate can be painted for corrosion protection; galvanized plate with long-life zinc coating; weather resistant steel fits coastal open-air environment, greatly cut later repainting maintenance cost.
Excellent processability without defects after bending, welding & cuttingStable substrate ductility, support bending into stair treads, laser cutting special cover plates and welding platform frames; no pattern cracking or peeling after processing.
Sufficient spot stock & one-stop deep processing supportRegular diamond & lentil patterns in stock, provide cutting, bending, punching and pre-galvanizing processing service for bulk container export orders.
Light self-weight, self-draining & dust-proof with high cost performanceLower cost compared with steel grating; concave gaps automatically drain water and collect dust to avoid rusting from water accumulation, preferred lightweight paving material for factories and ships.
8. Main Application Fields
8.1 Industrial Factory & Warehousing (Largest Consumption)
Anti-slip walkway in workshop, equipment maintenance platform, warehouse stair tread, forklift ramp, storage rack base plate
8.2 Ship & Port Engineering
Ship deck walkway, dock trestle, port loading platform, anti-slip ground for container yard, cabin stair tread
8.3 Vehicle & Transportation Manufacturing
Truck cargo floor, bus tread, construction machinery pedal, semi-trailer anti-slip base plate, bus station ground
8.4 Municipal & Construction Engineering
Steel structure stair tread, overpass pedestrian walkway, basement anti-slip floor, operation platform for sewage treatment plant
8.5 Chemical, Hydropower & Mining Equipment
Anti-slip platform for refinery, maintenance walkway of hydropower station, underground anti-slip passage for mine, tread for oil & gas drilling platform
8.6 Open-Air Outdoor Facilities
Coastal walkway, bridge pedestrian deck, maintenance platform for photovoltaic power station, anti-slip base plate for outdoor equipment
9. Packaging, Shipment & Lead Time
Packaging Methods
Ordinary black checkered plate: Stacked on steel-wood pallets, cross & vertical steel strapping, iron corner guards against collision, wrapped with simple anti-rust film
Hot-dip galvanized checkered plate: Whole pallet wrapped with waterproof plastic film to avoid zinc coating scratch during transportation
Export dedicated: Fixed on IPPC fumigated wooden pallets, fit for 20GP / 40HC container sea transportation
2. Delivery Warehouse: Spot goods shipped directly from Tianjin Port
3. Lead Time: 5–7 days for regular Q235B diamond/lentil pattern stock goods; 10–15 days for customized galvanized, weather resistant and extra-thick orders
4. Payment Term: 30% TT advance deposit, balance settled before shipment, L/C letter of credit is not accepted.
10. Mandatory Full Factory Inspection Items
Spectral chemical composition analysis of raw slabs, strictly control harmful impurities S & P
Full dimension inspection of base plate thickness, width, length and pattern protrusion height
Sampling tensile, cold bending and hardness mechanical performance test per batch
Visual surface inspection plate by plate to detect missing grains, cracks and indentation defects
Additional zinc coating weight & adhesion test for galvanized checkered plate
Original Mill Test Certificate, factory certificate and third-party SGS authoritative test report provided
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