Decking Roll Forming Materials: Steel Deck, Composite Deck & Coil Guide

Decking Roll Forming Materials

1. Overview of Decking Materials in Roll Forming

Decking roll forming materials are structural steels used to produce metal floor decking, roof decking, and composite decking systems for buildings.

These materials are designed for load-bearing strength, durability, and compatibility with concrete systems, making them essential in commercial and industrial construction.

Compared to roofing and cladding materials, decking materials are thicker, stronger, and engineered for structural performance rather than appearance.

2. Main Types of Decking Materials

1. Galvanized Steel (GI)

Most widely used decking material
Zinc coating for corrosion protection
Suitable for floor and roof decking

2. High Strength Galvanized Steel (S350GD / S450GD)

Higher load capacity
Allows thinner gauges
Used in composite decking systems

3. Black Steel (Oil Coated / Dry Steel)

Cost-effective option
Requires further coating or treatment

4. Galvalume Steel

Improved corrosion resistance
Used in roof decking applications

3. Material Composition & Structure

Typical decking material structure:

Steel base (structural grade)
Zinc or aluminum-zinc coating
Optional passivation or oil coating

4. Available Coil Specifications

Thickness Range

0.7mm – 1.5mm (standard decking range)

Coil Width

900mm – 1250mm

Coil Weight

5 tons – 15 tons

Coil ID / OD

ID: 508mm / 610mm
OD: up to 1500mm

5. Mechanical Properties

Typical values:

Yield Strength: 250 – 550 MPa
Tensile Strength: 350 – 650 MPa
Elongation: 10% – 25%

Common Grades

S250GD
S350GD
S450GD

6. Coating Types for Decking Materials

Zinc Coating (GI)

Z100 – Z275 typical
Corrosion protection

Passivated Surface

Reduces white rust

Oil Coating

Temporary protection

7. Surface Finishes

Metallic galvanized finish
Oiled surface
Dry surface
Passivated finish

8. Common Decking Profiles Produced

B deck
N deck
Composite deck
Form deck
Roof deck
Cellular deck

9. Advantages of Decking Materials

High structural strength
Load-bearing capacity
Suitable for concrete composite systems
Durable and long-lasting
Efficient construction solution

10. Disadvantages / Limitations

Heavier material
Requires strong roll forming machines
Higher cost for high-strength grades
Requires proper installation
Corrosion protection needed

11. Roll Forming Machine Considerations

Roll Tooling

Heavy-duty tooling required
Precision rib forming critical

Speed

10–30 m/min

Lubrication

May be required

Cutting

Hydraulic cutting systems

Common Issues

Springback
Profile distortion
Tool wear

12. Common Problems in Production

Rib deformation
Springback affecting dimensions
Uneven forming
Coil camber
Thickness variation

13. Pricing Guide

Typical global pricing:

Standard GI Decking Steel: $700–$1100/ton
High Strength Steel: $900–$1400/ton
Black Steel: $600–$1000/ton

Factors affecting price:

Grade (S250–S450)
Thickness
Coating type
Supplier

14. Comparison of Decking Materials

S350GD vs S450GD

S350GD = standard decking
S450GD = higher strength, longer spans

GI vs Black Steel

GI = corrosion resistant
Black = cheaper but needs protection

Decking vs Roofing Materials

Decking = structural
Roofing = weather protection

15. Best Industries Using Decking Materials

Commercial construction
Industrial buildings
High-rise structures
Warehouses
Infrastructure projects

16. How to Choose Decking Material

Choose Based On:

Load requirements
Span length
Concrete composite use
Environmental exposure
Budget

General Guide:

Standard floors → S250 / S350
Heavy loads → S450
Outdoor exposure → GI coated

17. FAQ Section

What is decking steel?

Steel used to create floor and roof decking systems.

What thickness is used?

Typically 0.7mm–1.5mm.

What grade is best?

S350GD or S450GD for most applications.

Can decking be roll formed?

Yes, all decking profiles are roll formed.

What is composite decking?

Decking used with concrete for structural strength.

18. Machine Matcher Section

We supply roll forming machines for all decking materials.

B deck, N deck, and composite deck machines
Heavy-duty roll forming systems
Custom-built solutions
Global delivery available
UK and USA technical support

Contact:
Machine Matcher
Sales & Technical Team

Quick Specs

Thickness
0.7–1.5mm

Yield Strength
250–550 MPa

Coil Width
900–1250mm

Coil ID
508 / 610mm