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1. Product Overview
Checkered plate, also known as anti-slip plate or embossed steel plate, is internationally called Diamond Plate. It is integrally formed by hot rolling or cold rolling embossing with carbon steel, stainless steel or aluminum alloy as the base material, with regular raised patterns on the surface. The base plate thickness excludes the height of pattern protrusions, and the protrusion height of patterns is no less than 20% of the base plate thickness.
It has two core functions: anti-slip load bearing and decorative protection, featuring wear resistance, water drainage and anti-deformation performance. It is a general anti-slip metal material widely used in industry, construction and transportation, complying with national standard GB/T 33974-2017 Hot-rolled Checkered Steel Plate and Strip.
2. Product Classification
2.1 Classification by Base Material
Carbon Steel Checkered Plate (mainstream in market)
Materials: Q235B, Q355B, SS400
Advantages: High cost performance, high strength, easy welding and heavy load bearing; available for hot-dip galvanizing for anti-corrosion
Applications: Factory platforms, stair treads, truck floors, ship decks, equipment foot pedals
2.1Aluminum Alloy Checkered Plate
Materials: 1060, 3003, 5052 five-bar aluminum checkered plate
Advantages: Light weight, corrosion resistance, easy bending and processing
Applications: Curtain wall decoration, carriage floors, lightweight indoor anti-slip platforms
2.2 Classification by Pattern Style (4 most common types)
| Pattern Type | Pattern Height | Core Features | Application Scenarios |
|---|---|---|---|
| Lentil Pattern (Highest sales volume) | 2~4mm | Comfortable walking, easy cleaning, balanced comprehensive anti-slip performance | Factory walkways, indoor stairs, truck floors |
| Diamond Pattern | 3~5mm | Highest friction coefficient, uniform stress bearing, resistant to oil and humidity | Ship decks, basement ramps, heavy-duty workshop floors |
| Round Bean Pattern | 2~3mm | Delicate patterns, strong decoration, mild anti-slip property | Mall passages, light-duty equipment platforms, indoor decoration |
| Willow Leaf Pattern | 1.5~3mm | Beautiful lines, weak anti-slip performance | Exterior curtain walls, door head decorations, landscape components |
2.3 Classification by Production Process
Hot-rolled Checkered PlateIntegrally formed by high-temperature rolling. Base plate thickness ranges from 1.4mm to 16mm with highly three-dimensional raised patterns and superior anti-slip performance, suitable for thick plates under heavy load conditions, the general industrial grade.
Cold Rolled Embossed PlateSecondary embossing on cold-rolled sheets with thickness ≤4mm, flat and smooth surface and delicate patterns, mainly for decoration and lightweight indoor anti-slip occasions.
3. Standard Specification Parameters
3.1 Thickness (Base plate thickness, excluding patterns)
Regular stock: 2.0/2.5/3.0/4.0/5.0/6.0/8.0/10mmCustom extra-thick plates: 12/14/16mm (special for heavy steel structures)
3.2 Width (Standard GB widths)
1000mm, 1250mm, 1500mm (1500mm width offers stronger bearing capacity)
3.3 Length
Standard fixed lengths in stock: 2000/3000/4000/6000mm; custom arbitrary lengths and cutting service available
3.4 Theoretical Weight Reference (Carbon Steel, kg/sqm)
2.5mm base plate: Lentil 21.1, Diamond 21.63.0mm base plate: Lentil 24.4, Diamond 24.94.0mm base plate: Lentil 32.3, Diamond 33.4
Calculation Formula: Single plate weight(kg) = Base thickness(mm) × Width(m) × Length(m) × 7.85 (steel density) + pattern weight increment coefficient
4. Core Product Performance
Excellent Anti-slip PropertyFriction coefficient ≥0.6 on dry ground, ≥0.4 on wet/oily ground; diamond pattern reaches anti-slip grade R11-R12 to prevent slipping of personnel, forklifts and equipment.
High Strength & Wear ResistanceQ355B low alloy checkered plate compressive strength reaches 2~5MPa. Raised patterns disperse pressure with anti-rolling and anti-abrasion performance, free from dent and deformation after long-term use.
Self-drainage & Anti-foulingGaps between patterns form drainage channels to automatically guide rainwater and oil, avoiding water and dust accumulation with easy daily maintenance.
Material SavingUnder the same load bearing requirement, patterned structure improves bending resistance, saving 15% steel consumption compared with flat plates and lowering overall cost.
Easy Processing & Wide AdaptabilitySupport plasma cutting, bending, welding, punching and grinding; available for surface treatments including hot-dip galvanizing, painting, wire drawing and polishing.
5. Surface Anti-corrosion Treatment Options
Hot-dip Galvanized Checkered Plate (Outdoor Priority)Zinc coating thickness: 8~20μm, salt spray resistance for 500~1000 hours. Ideal for outdoor, coastal and humid workshops to greatly extend service life.
Anti-rust Primer / Paint CoatingFor short-term indoor usage with low cost; customizable grey, black, yellow warning paint finishes.
Anodized Aluminum AlloyCombines anti-slip and decoration, wear-resistant and colorfast, for building curtain walls and interior decoration.
6. Full Range of Application Industries
6.1 Manufacturing Industry
Factory operating platforms, equipment foot pedals, anti-slip workshop floors, forklift passages, steel stairs, maintenance walkways, anti-slip floors in power distribution rooms.
6.2 Construction Engineering
Factory stair treads, fire escape passages, basement ramps, roof maintenance platforms, outdoor steel structure walkways, indoor decorative walls, door head curtain walls.
6.3 Transportation Industry
Truck & semi-trailer carriage floors, bus & train foot pedals, ship decks, dock walkways, construction machinery footrests.
6.4 Municipal & Decoration Industry
Stairs in shopping malls, hospitals and schools, landscape platforms, stainless steel decorative partitions, equipment protective covers.
6.5 Special Corrosive Environments
Chemical workshops, sewage treatment stations, coastal docks (304/316L stainless steel checkered plate).
7. Order Mark Example
Q235B Lentil Checkered Plate 4.0×1250×6000 GB/T33974-2017Explanation: Material Q235B, lentil pattern, base thickness 4mm, width 1250mm, length 6 meters, complying with national standard for hot-rolled checkered steel plate.
8. Packing, Transportation & Storage
Packing: Thin plates covered with waterproof film; whole plates bundled with steel strips. Labels with material, specification and weight attached at plate ends, together with original mill test certificate.
Transportation: Full truck land transport to avoid scratches and collision damage on plate surface; stainless steel plates separated individually to prevent carbon steel contamination and rust.
Storage: Stack indoors with padding for moisture prevention; galvanized plates avoid long-term rain exposure; stainless steel kept away from acid, alkali and cement dust.
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