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

Checkered steel plate is widely used for industrial flooring, stair treads, platforms, vehicle ramps, and other applications where added surface traction is required. This guide covers checkered plate sizes, thickness, weight, patterns, common grades, applications, and price considerations, with practical reference data for material selection and purchasing.

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
Theoretical weight at 6mm base thickness	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 called a checker plate or chequered plate, is a steel plate with a raised surface pattern on one side. The raised pattern provides additional traction compared with a plain steel plate.

Common patterns include diamond, five-bar, lentil or teardrop, and hexagonal designs. Checkered steel plate is commonly produced by hot rolling and is available in different thicknesses, grades, and surface treatments.

Standard Sizes, Thickness & Theoretical Weight

Checkered steel plates are typically supplied in thicknesses from 2.5 mm to 12 mm, with dimensions selected according to the application, loading requirements, and available fabrication or transport conditions. The weight of checkered steel plate is commonly calculated from the base plate thickness and steel density.

The most commonly supplied checkered plate standard sizes are listed below.

Thickness (mm)	Standard Size (mm)	Theoretical 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.

Checkered Plate Types

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.

• 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 Patterns

The most common checkered plate patterns include:

Pattern	Typical Characteristics	Common Applications
Diamond	Widely used raised diamond pattern	Flooring, stairs, platforms, ramps
Five-bar	Parallel five-bar pattern	Industrial flooring, walkways, vehicle floors
Lentil / Teardrop	Rounded or elongated raised pattern	Flooring, platforms, decorative applications
Hexagonal	Hexagonal raised pattern	Flooring and architectural applications

Pattern availability can vary by thickness, production standard, and supplier.

Typical Grades of Checkered Steel Plates

The appropriate grade depends on the required strength, application, and applicable material standard.

Grade	Typical Use
A36 checkered steel plate	General structural and flooring applications
Q235B checkered steel plate	General-purpose flooring, platforms, and fabrication
S235JR	General structural applications
Q345	Higher-strength structural applications
A572 Grade 50 chequered plate	Higher-strength applications where increased yield strength is required

For general flooring and stair applications, A36, Q235B, and S235JR are commonly used. Higher-strength grades such as Q345 and A572 Grade 50 may be selected where higher structural strength is required.

Checkered Plate Applications and Recommended Thickness

Checkered steel plate is widely used in industrial flooring, stair treads, walkways, platforms, vehicle floors, truck and trailer ramps, machinery access platforms, and marine or offshore platforms.

The required thickness of checkered steel plate depends on the expected load, support spacing, span, and application conditions. Typical ranges are:

Application	Common Thickness
Decorative / light-duty	2.5–3.0 mm
Stair treads	3.0–4.5 mm
Walkways and platforms	4.5–6.0 mm
Vehicle floors and ramps	6.0 mm and above
Marine and outdoor platforms	4.5–8.0 mm+

For structural or heavy-duty applications, thickness should be selected based on the actual design load and support conditions rather than application category alone.

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.

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

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.