Checkered Steel Plate (Diamond Plate)

Checkered steel plate (Diamond Plate) is a non-slip floor plate featuring a raised pattern for multi-directional traction. Offering high strength and excellent wear resistance, it is ideal for industrial flooring, stair treads, vehicle steps, and structural ramps.

Material Hot Rolled Carbon Steel (Patterned)
Grade / Standard ASTM A786 / GB/T 3277 / EN 10025
Width 600mm - 2000mm
Length 1000mm - 12000mm (Customizable)
Delivery Condition hot_rolled
Surface Treatment galvanized
MOQ 5 Tons
Delivery Time 15-30 Days / In Stock
Loading Port Tianjin / Shanghai / Qingdao
Equivalent Grades: GB Q235B / Q345B ≈ ASTM A36 / A572 = EN S235JR / S355JR = JIS SS400
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Overview of Checkered Steel Plate (Diamond Plate)

Checkered steel plate, commonly known as diamond plate or tread plate, is a versatile structural material featuring a regular pattern of raised diamonds, tear drops, or lines on one side. Specified under standards such as ASTM A786, EN 10025, and GB/T 3277, these plates are hot-rolled from high-quality carbon steel. The primary function of the raised pattern is to provide exceptional multi-directional traction, significantly reducing the risk of slips and falls in high-traffic or oily environments. Its combination of structural strength and safety utility makes it the industry standard for flooring in industrial and commercial applications.

Shandong Tanglu Metal Material Co., Ltd. supplies premium checkered steel plates produced with precise pattern definition and excellent flatness. Available in various base grades including Q235B, SS400, and A36, our checkered plates offer high load-bearing capacity and outstanding durability. For B2B buyers in the construction, transportation, and offshore sectors, our diamond plates provide a reliable, low-maintenance safety solution that integrates seamlessly into heavy-duty infrastructure and architectural designs.

Key Features and Technical Advantages

The defining feature of checkered steel plate is its slip-resistant surface, which remains effective even when wet or coated in industrial lubricants. Beyond its safety benefits, the raised pattern also adds a degree of structural rigidity and wear resistance to the plate surface. Our plates are hot-rolled to ensure a strong bond between the base metal and the pattern, preventing the ‘peeling’ or smoothing out that can occur with inferior embossed products.

We offer a wide range of thicknesses from 1.2mm to 12.0mm and standard widths up to 2000mm. The material exhibits excellent weldability and workability, allowing it to be easily cut, bent, and joined for custom stairs, ramps, and platforms. For enhanced longevity in corrosive environments, we provide hot-dip galvanized checkered plates, which offer decades of protection against rust and atmospheric degradation. Its aesthetic ‘industrial’ look also makes it a popular choice for decorative architectural panels and vehicle styling.

Main Applications of Checkered Steel Plate

Checkered steel plate is the definitive material for safety flooring across diverse sectors. In the industrial realm, it is used for warehouse walkways, factory mezzanine floors, and engine room platforms. In the construction industry, it is the primary choice for external fire escapes, stair treads, and loading ramps where all-weather traction is critical.

Beyond flooring, diamond plate is extensively utilized in the transportation sector for truck bed liners, vehicle steps, ambulance interiors, and cargo ship decks. It is also found in specialized equipment manufacturing, including lift platforms, agricultural machinery, and heavy-duty storage boxes. Its ability to withstand high impact and provide a stable footing makes it an essential component for public infrastructure, such as pedestrian bridges and subway station walkways.

Why Choose Us for Checkered Steel Plate

Shandong Tanglu Metal Material Co., Ltd. supplies high-grade checkered steel plates sourced from leading mills with advanced pattern-rolling technology. We ensure every plate meets strict standards for pattern height (typically 20%-30% of base thickness) and dimensional tolerance. All orders are accompanied by Mill Test Certificates (MTC) documenting the base material grade and mechanical properties.

Our logistical expertise allows for flexible order sizes and specialized seaworthy packaging to prevent surface oxidation during international transit. With a stable monthly supply capacity of 15,000 tons and extensive experience in supplying global infrastructure projects, we provide B2B clients with the material consistency, technical support, and competitive pricing required for safety-critical industrial applications.

📐 Dimension & Size Table

Thickness (mm) Width (mm) Length (mm) Weight (kg/m²)
2.0 1000-1250 0.4-0.6 17.2
3.0 1000-1250 0.6-0.8 25.1
4.0 1000-1500 0.8-1.0 32.9
5.0 1250-1500 1.0-1.2 40.8
6.0 1250-1800 1.2-1.5 48.6
8.0 1250-1800 1.5-1.8 64.3
10.0 1500-2000 1.8-2.0 80.1
12.0 1500-2000 2.0-2.5 95.8

* Custom sizes available upon request. Tolerances per relevant international standards.

🔬 Chemical Composition

Element Min Max Display Value Note
C - 0.22 ≤0.22 For Q235B/A36 Base
Mn 0.30 0.80 0.30-0.80
Si - 0.35 ≤0.35
P - 0.045 ≤0.045
S - 0.045 ≤0.045

* Chemical composition may vary by heat, thickness and specification. Please refer to the actual mill test certificate.

⚙️ Mechanical Properties

Property Value Unit Test Condition
Yield Strength (t≤16mm) ≥235 MPa Standard Structural
Tensile Strength 370 - 510 MPa
Elongation (A50mm) ≥23 %
Bending Properties 180° Cold Bend - Passed

* Values shown are minimum requirements unless otherwise stated.

📦 Commercial Information

Packaging Standard seaworthy export bundle packing. Plates are tightly secured with high-tensile steel straps, protected with waterproof paper and metal edge guards. Bundles are loaded onto steel or fumigated wooden skids. For thin plates, specialized metal-framed crates are used to prevent warping or edge damage during high-bay stacking in containers.
Payment Terms T/T (Telegraphic Transfer),L/C (Letter of Credit),D/P (Documents against Payment),Western Union
Price Term FOB,CFR,CIF,EXW
Supply Capacity 15,000 Tons/Month
Loading Port Tianjin / Shanghai / Qingdao

Why Choose Our Checkered Steel Plate (Diamond Plate)?

Superior Slip Resistance

High-definition raised pattern provides consistent traction in all directions, essential for safety in industrial facilities, stairs, and slippery ramps.

📐

Excellent Structural Durability

Hot-rolled carbon steel base offers high load-bearing capacity and impact resistance, ensuring the plate remains flat and secure under heavy traffic.

🚢

Highly Fabricable Design

Outstanding weldability and cold-bending performance allow for easy customization into complex floor shapes, stair treads, and protective vehicle panels.

🏭 Applications of Checkered Steel Plate (Diamond Plate)

Checkered steel plate is the definitive choice for industrial safety flooring, essential for mezzanine levels, warehouse walkways, and fire escape stairs. It serves as the primary material for heavy-duty ramps, loading docks, and pedestrian bridge treads. In the transportation sector, it is widely utilized for truck beds, trailer floors, and vehicle kick-plates. Diamond plate is also the standard for offshore platform decks, ship engine room floors, and specialized architectural protective panels.

🏗️ Construction & Structure ⚙️ Machinery & Equipment 🚂 Railway & Transportation

📋 Quality & Certification

Our Certifications

  • ✅ ISO 9001:2015
  • ✅ CE Marking
  • ✅ SGS Certified

Mill Certificate Type

  • 📋 EN 10204 3.1
  • 📋 Certificate of Origin

❓ Frequently Asked Questions

What is the difference between diamond plate and checkered plate?

They refer to the same type of non-slip floor plate. 'Diamond plate' is more common in North America, while 'Checkered plate' or 'Chequer plate' is frequently used in Europe and Asia.

What are the common patterns for checkered plate?

The most popular patterns are the Diamond (single raised bar) and the Tear Drop (or One-bar). For architectural or specific industrial needs, Five-bar (Lentil) and Willow-leaf patterns are also available.

How is the weight of checkered plate calculated?

The weight is based on the base thickness (flat part) plus an allowance for the pattern (usually around 2-3kg extra per square meter depending on the pattern height).

Can checkered plate be galvanized?

Yes, we highly recommend hot-dip galvanizing for outdoor or maritime applications. It provides a thick zinc coating that protects the plate and the pattern from corrosion for up to 50 years.

What is the minimum thickness for a structural floor?

For light pedestrian traffic, 3.0mm is common. For industrial mezzanines and vehicle ramps, 5.0mm to 8.0mm is typically recommended depending on the support spacing.

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Checkered Steel Plate (Diamond Plate)

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