Checkered Steel Plate: Sizes, Types, Weight, Applications & Price Guide

Checkered Steel Plate — Quick Reference

Item	Detail
Also known as	checker plate, chequered plate, diamond plate, tread plate
Patterns	Diamond, Five-bar, Lentil/Teardrop, Hexagonal
Thickness range	2.5mm – 12mm
Weight (6mm carbon steel)	47.1 kg/m² (9.65 lb/ft²)
Standard sizes	1220×2440mm, 1500×3000mm, 1500×6000mm
Common grades	A36, Q235B, S235JR (mild steel); Q345, A572 Gr.50 (higher strength)
Galvanized option	Hot-dip or electro-galvanized, +15–25% cost premium
Best for	Industrial flooring, stair treads, vehicle ramps, marine platforms

What Is a Checkered Steel Plate?

A checkered steel plate — also spelled chequered plate in British English and widely used across the Middle East, Southeast Asia, and Commonwealth countries — is a flat steel sheet with a regular raised pattern embossed onto one side.

Common pattern types include diamond, five-bar, and lentil (teardrop). The textured surface enhances traction and load grip, making it suitable for walkways, ramps, stair treads, loading platforms, and truck beds.

Most checkered plates are produced by hot rolling, which ensures consistent mechanical strength and wear resistance across the full thickness range.

Standard Sizes, Thickness & Theoretical Weight

Checkered steel plates are typically supplied in standard sizes for convenience in fabrication and transportation. The most commonly supplied checkered plate standard sizes are listed below.

Thickness (mm)	Standard Size (mm)	Weight (kg/m²)	Weight (lb/ft²)
2.5	1000×2000	19.6	4.02
3.0	1250×2500	23.6	4.83
4.0	1500×3000	31.4	6.43
5.0	1500×6000	39.3	8.05
6.0	1220×2440	47.1	9.65
8.0	1500×6000	62.8	12.87
10.0	1500×6000	78.5	16.08
12.0	1500×6000	94.2	19.30

Note: The above values are theoretical weights calculated based on base plate thickness.
Raised checkered patterns typically add approximately 3–5% to the total weight depending on pattern depth, and actual weight may vary slightly due to manufacturing tolerances.

Types of Checkered Steel Plates (By Material)

The main types of checker plate are classified by material, including mild steel checker plate, carbon steel checker plate, and galvanized checker plate.

1. Mild Steel Checkered Plate

Mild steel checkered plates (MS checker plates) are the most common and economical option. They are easy to fabricate, weld, and cut—making them suitable for general structural and flooring use. For projects requiring standard carbon steel checkered plates, you can also explore our ASTM A36 checkered steel plate options.

• Typical Grades: Q235, A36, SS400, S235JR
• Surface Finish: Hot rolled, uncoated
• Applications: Factory floors, staircases, and truck platforms

2. Carbon Steel Checkered Plate

Carbon steel checkered plates offer slightly higher strength and hardness compared to mild steel. They are used where wear resistance and strength are more critical.

• Common Grades: ASTM A283, A572 Gr.50, Q345, S275JR
• Use Cases: Heavy machinery flooring, industrial ramps, transport trailers

3. Galvanized Checker Plate

Galvanized checker plate is coated with a layer of zinc to resist corrosion, ideal for outdoor or humid conditions. They retain the same anti-slip texture while providing enhanced durability and longer lifespan.

• Surface Treatment: Hot-dip galvanized or electro-galvanized
• Common Applications: Outdoor ramps, marine platforms, wet areas, stair treads

Common Checkered Plate Pattern Types

Common chequered plate pattern types include diamond, five-bar, lentil (teardrop), and hexagonal designs,
each offering different levels of slip resistance and visual appearance.

• Diamond Plate Steel (Tread Plate) – The most popular design for industrial floors and loading areas.
• Five-Bar Checker Plate – A linear anti-slip pattern ideal for stairs, walkways, and warehouse flooring.
• Lentil / Teardrop Pattern – Offers a smoother, uniform surface suitable for decorative or light-duty indoor use.
• Hexagonal / Honeycomb Plate – Heavy-duty grip pattern used for equipment platforms and machinery floors.

Both diamond and five-bar tread plates are available in mild steel, carbon steel, and galvanized finishes, allowing selection based on strength, corrosion protection, and cost.

Typical Grades of Checkered Steel Plates

Common checkered steel plate grades vary by application and required strength.

• For general flooring and stair treads, grades such as Q235, ASTM A36, and S235JR are widely used.
• For higher load-bearing or industrial platforms, grades like Q345 and ASTM A572 Gr.50 are preferred.

Recommended Checkered Plate Thickness by Application

Selecting the correct checker plate steel thickness is essential for load capacity, safety, and service life.

Applications	Recommended Thickness
Stair treads	3.0 – 4.5 mm
Walkways and platforms	4.5 – 6.0 mm
Vehicle floors and ramps	≥ 6.0 mm
Decorative or light-duty panels	2.3 – 3.0 mm

For stair applications, checkered plate thickness for stairs is typically between 3.0 mm and 4.5 mm, depending on step width and expected foot traffic.

Checkered Plate Prices

The price of checkered steel plate varies depending on material grade, thickness, surface coating, and order volume. For bulk orders, customized thicknesses, or specific standards, contact our team for a quotation.

🡒 Request a Quote for Your Checkered Steel Needs

Applications of Checkered Steel Plates

Thanks to their anti-slip surface and load-bearing properties, checkered steel plates are widely used in:

• Industrial floors & walkways
• Heavy vehicle platforms & ramps
• Ship decks & marine structures
• Staircases & step treads
• Warehouse racking systems
• Building facades & decorative panels

For a more detailed breakdown of how checker plates are used in different scenarios such as stairs, flooring, garages, and outdoor environments, you can refer to our guide on Practical Applications of Checker Plates.

Why Source from a Reliable Checkered Plate Supplier?

Working with a trusted checkered steel plate exporter ensures:

• Consistent quality with certified standards
• Competitive bulk pricing
• Flexible production for custom sizes
• Global shipping support

At CJM Steel Group, we supply and export MS checker plates, galvanized tread plates, and carbon steel checkered steel plates for contractors, distributors, and project owners worldwide.

Contact our technical team today to receive personalized suggestions based on your industry, usage, and budget.

FAQ

• Q1: What is a checkered steel plate?
  A checkered steel plate is a steel sheet with a raised surface pattern such as diamond or five-bar, designed to improve slip resistance. It is commonly used for stairs, walkways, platforms, and industrial flooring.
• Q2: What are the standard sizes of checkered steel plates?
  Common standard sheet sizes include 4′ × 8′ (1220 × 2440 mm), 5′ × 10′ (1500 × 3000 mm), and 1500 × 6000 mm plates. Custom cutting is widely available depending on project requirements.
• Q3: What thicknesses are available for checker plate?
  Typical thickness ranges from 2.3 mm to 8 mm. The most commonly used thicknesses are 3 mm, 4 mm, 5 mm, and 6 mm.
• Q4: What thickness of checker plate is used for stairs?
  For stair treads and platforms, 3 mm to 6 mm thickness is most common. Heavier-duty industrial stairs may require 6 mm or thicker plates depending on load requirements.
• Q5: What is the weight of 6mm checker plate per square meter?
  A 6 mm carbon steel checker plate weighs approximately 47–50 kg per m², depending on pattern height and base plate thickness tolerance.
• Q6: What is the difference between checkered plate and plain steel plate?
  Checkered plate has a raised patterned surface for slip resistance, while plain steel plate has a smooth surface. Structurally they can be similar in grade, but checker plates are preferred in safety flooring applications.
• Q7: What steel grades are commonly used for checkered plate?
  Common grades include ASTM A36, S235JR, SS400, and equivalent mild carbon steel grades used in structural and general fabrication applications.
• Q8: Is checkered plate suitable for outdoor use?
  Yes. It is widely used outdoors for walkways, loading ramps, and platforms. Galvanized or coated versions are recommended for improved corrosion resistance in humid or marine environments.
• Q9: What is the weight of an 8mm checker plate per m²?
  plate weighs approximately 62.8 kg per square meter (12.87 lb/ft²), based on carbon steel density of 7.85 g/cm³. For a standard 1500×6000mm sheet, total weight is approximately 565 kg. Use our Steel Plate Weight Calculator for custom dimensions.