Perforated Steel Roll Forming Material Guide: Coil Sizes, Hole Patterns & Uses

Perforated Steel Roll Forming Material

1. Overview of Perforated Steel in Roll Forming

Perforated steel is sheet or coil that has been punched or laser-cut with a pattern of holes. It is designed for applications requiring ventilation, acoustic control, filtration, or decorative appearance.

In roll forming, perforated steel is widely used for facade panels, ceiling systems, cable trays, shelving, structural components, and ventilation products.

Compared to solid steel, perforated steel offers reduced weight, airflow, and sound absorption properties while maintaining structural integrity.

2. Material Composition & Structure

Perforated steel is typically:

• Mild steel
• Galvanized steel (GI)
• Stainless steel
• Pre-painted steel

Structure

• Steel base material
• Perforation pattern (punched holes)
• Optional coating or finish

3. Available Coil Specifications

Thickness Range

• 0.5mm – 3.0mm

Coil Width

• 600mm – 1500mm

Coil Weight

• 3 tons – 10 tons

Coil ID / OD

• ID: 508mm / 610mm
• OD: up to 1600mm

Tolerance

• Reduced strength due to perforation
• Requires consistent hole alignment

4. Mechanical Properties

Depends on base material:

• Yield Strength: 180 – 350 MPa
• Tensile Strength: 300 – 550 MPa
• Elongation: 15% – 30%
• Hardness: 100 – 180 HB

👉 Note: Strength is reduced due to perforations.

5. Coating Types

Perforated steel may be supplied as:

• Galvanized (GI)
• Painted (PPGI / PPGL)
• Powder coated
• Stainless (no coating required)

6. Surface Finishes & Perforation Patterns

Common Hole Types

• Round holes
• Square holes
• Slot holes
• Hexagonal holes
• Decorative/custom patterns

Key Parameters

• Hole diameter
• Pitch (spacing)
• Open area (%)

7. Common Roll Forming Applications

• Architectural façade panels
• Acoustic ceiling panels
• Cable trays and trunking
• Shelving systems
• Ventilation panels
• Filters and screens

8. Advantages of Perforated Steel

• Reduced weight
• Airflow and ventilation
• Sound absorption
• Decorative appearance
• Functional versatility
• Cost savings in material usage

9. Disadvantages / Limitations

• Reduced structural strength
• Potential distortion during forming
• Edge cracking around holes
• Requires precise alignment
• More complex processing

10. Roll Forming Machine Considerations

Roll Tooling

• Precision tooling required
• Must support material during forming

Speed

• 5–25 m/min

Lubrication

• Optional

Cutting

• Clean shear or punch system

Common Issues

• Hole distortion
• Material deformation
• Misalignment

11. Common Problems in Production

• Hole deformation during forming
• Edge cracking near perforations
• Uneven profile due to weak areas
• Alignment issues
• Surface damage around holes

12. Pricing Guide

Typical global pricing:

• Low: $700–$1000 per ton
• Medium: $1000–$1500 per ton
• High: $1500–$2200+ per ton

Factors affecting price:

• Hole pattern complexity
• Open area percentage
• Base material
• Coating

13. Comparison with Other Materials

Perforated Steel vs Solid Steel

• Perforated = lighter, functional
• Solid = stronger

Perforated Steel vs Expanded Metal

• Perforated = punched holes
• Expanded = stretched mesh

Perforated Steel vs Mesh

• Perforated = rigid sheet
• Mesh = flexible

14. Best Industries Using Perforated Steel

• Architecture and construction
• HVAC and ventilation
• Industrial manufacturing
• Electrical systems (cable trays)
• Acoustic design

15. How to Choose Perforated Steel

Choose Perforated Steel When:

• Ventilation required
• Acoustic performance needed
• Decorative design important
• Weight reduction desired

Avoid When:

• Maximum strength required
• Heavy structural applications
• Tight forming profiles

16. FAQ Section

What is perforated steel?

Steel sheet with punched holes.

Can perforated steel be roll formed?

Yes, with proper machine setup.

Does perforation reduce strength?

Yes, depending on open area.

What are common hole types?

Round, square, slot, hexagonal.

Is it expensive?

Depends on pattern complexity.

17. Machine Matcher Section

We supply roll forming machines for all material types including perforated steel.

• Custom-built machines to your profile
• New machines built to specification
• Global delivery available
• UK and USA technical support

Contact:
Machine Matcher
Sales & Technical Team

Quick Specs

Thickness
0.5–3.0mm

Yield Strength
180–350 MPa

Coil Width
600–1500mm

Coil ID
508 / 610mm