China Round Hole Perforated Metal Manufacturers Suppliers Factory - Customized Service

Round Hole Perforated Metal Manufacturer for Filtration, Screening & Ventilation Applications

Round hole perforated metal is the standard pattern used across industrial filtration, acoustic enclosures, HVAC equipment, and architectural cladding. Produced via high-speed CNC punching presses, these sheets provide precise open area ratios, consistent hole pitch, and predictable mechanical strength.

We supply custom and standard round hole perforated sheets in carbon steel, stainless steel, aluminum, and galvanized steel, with hole diameters from 1.0 mm to 150 mm and sheet thicknesses up to 10 mm.

Stainless Steel Sheet Round Hole Perforated Metal
Materials：Stainless Steel
Specification：Our capability covers hole dia ranging from 1 mm up to 150 mm, and thickness ranging from 0.5 mm to 10 mm.
Color：Customized...
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Steel Sheet Round Hole Perforated Metal
Materials：Carbon Steel
Specification：Our capability covers hole dia ranging from 1 mm up to 150 mm, and thickness ranging from 0.5 mm to 10 mm.
Color：Customized...
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Aluminum Sheet Round Hole Perforated Metal
Materials：Aluminum
Specification：Our capability covers hole dia ranging from 1 mm up to 150 mm, and thickness ranging from 0.5 mm to 10 mm.
Color：Customized...
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Galvanized Sheet Round Hole Perforated Metal
Materials：Galvanized Sheet
Specification：Our capability covers hole dia ranging from 1 mm up to 150 mm, and thickness ranging from 0.5 mm to 10 mm.
Color：Customized...
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Round Hole Perforated Stainless Steel Sheet
Materials：stainless steel
Specification：Our capability covers hole dia ranging from 1 mm up to 150 mm, and thickness ranging from 0.5 mm to 10 mm.
Color：Customized...
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Product Types

60° Staggered Pattern

The industry standard layout. Provides optimal strength-to-weight ratio, maximum open area efficiency, and uniform load distribution.

45° Staggered Pattern

Used in specialized fluid dynamics applications and decorative panels where non-linear sightlines are required.

Straight Line Pattern

Aligned in parallel grid rows. Common for screening equipment, decorative grilles, and application designs requiring defined alignment.

Round Hole Perforated Stainless Steel Sheet

Technical Specifications

Parameter	Standard Range	Custom Capability
Sheet Thickness	0.5 mm - 6.0 mm	Up to 10 mm
Hole Diameter (D)	1.0 mm - 50 mm	Up to 150 mm
Hole Pitch (P)	2.0 mm - 80 mm	Custom per drawing
Layout Pattern	60° Staggered, 45° Staggered, Straight Line	Custom angle / array
Standard Sheet Size	1000x2000 mm, 1220x2440 mm (4x8 ft), 1500x3000 mm	Up to 2000x6000 mm / Coil stock
Open Area Ratio	10% - 65%	Calculated per formula
Margin Options	End margins only, full perimeter margin, zero margin	Custom blank margins
Dimensional Tolerance	ISO 2768-m / EN 10088	Strict tolerance on request

Material Options

Stainless Steel (304, 316, 316L)

Resistant to corrosion and chemicals. Selected for food processing, marine environments, and pharmaceutical filtration.

Carbon Steel (Q235, S235JR, ASTM A36)

High tensile strength for structural components and machinery guards. Requires surface protection.

Galvanized Steel (GI, Electro-Galvanized)

Zinc-coated carbon steel offering economical indoor and outdoor rust protection.

Aluminum (1060, 3003, 5052, 6061)

Lightweight, corrosion-resistant, and easily anodized. Ideal for architectural facades and HVAC grilles.

Secondary Finishing Services

01/

Levelling & Flattening: Roller leveling removes internal stress and edge waves caused by punching, restoring sheet flatness for seamless installation.

02/

Deburring: Mechanical brushing removes micro-burrs along hole rims to ensure worker safety and coating adhesion.

03/

Powder Coating & Anodizing: Outdoor-grade PVDF or polyester powder coating for architectural color matching and UV resistance.

04/

Degreasing & Cleaning: Ultrasonic oil removal for stainless steel filtration components prior to welding.

Typical Applications

Filtration & Separation

Strainer elements, centrifuge baskets, grain drying screens, and liquid filtration tubes.

Acoustics & HVAC

Noise barrier panels, generator enclosure silencer linings, diffusers, and HVAC return air grilles.

Architectural & Decorative

Exterior facade cladding, sunshade louvers, ceiling panels, balustrade infills, and retail fixtures.

Industrial Safety

Machinery protective guards, conveyor side covers, transformer ventilation grilles, and non-slip walkways.

Manufacturing Capability & Quality Control

Raw Material Inspection

Thickness tolerance and mill certificate verification (MTC provided with shipment).

First-Piece Inspection

Laser measurement of hole diameter, center-to-center pitch, and perimeter margin dimension prior to continuous punching.

Flatness Control

In-line tension leveling eliminates oil-canning and bow distortion caused by high hole density.

Surface & Edge Check

Optical scanning and manual feel tests for burr height, scratch marks, and oil residue.

Export Packaging

Waterproof paper wrapping, edge protectors, and solid steel-frame wooden pallets to prevent transit bending.

Packaging

According to the chemical and physical properties of the products, we use waterproof, moisture-proof and breakage-proof materials for packaging to avoid product damage during transportation. In addition, we can also provide customized packaging according to customer's specific requirements to meet the special needs of different customers.

FAQ

Q: How do I calculate the open area percentage for a 60° staggered round hole pattern?

A: For a 60° staggered pattern, open area is calculated using the formula:
Open Area (%) = (D^2 * 90.69) / P^2
Where D is hole diameter and P is center-to-center pitch. For example, a 3 mm hole on a 5 mm pitch results in a 32.6% open area.

Q: What is the minimum hole diameter relative to sheet thickness?

A: As a standard manufacturing rule, hole diameter (D) should be equal to or greater than the sheet thickness (T) (D >= T). For stainless steel, maintaining D >= 1.2 * T prevents punch tool breakage and reduces edge distortion.

Q: Can you supply perforated sheets with solid (unpunched) margins?

A: Yes. We supply sheets with custom solid margins along all four sides, or specific blank areas according to your CAD drawings. This simplifies downstream welding, bending, or frame installation.

Q: How do you ensure flat sheets after punching high open area patterns?

A: Punching thousands of holes introduces internal stress into the metal sheet. We route all perforated panels through a multi-roll precision leveling machine to flatten edge waves and oil-canning before packaging.

Q: What technical details are needed to receive an accurate quote?

A: Please specify: material grade, sheet thickness, hole diameter, pitch/layout, sheet dimensions, margin requirements, total quantity, and any secondary finishing (e.g., degreasing, powder coating). CAD or PDF drawings are preferred for custom layouts.

Q: Do you provide material test certificates (MTC)?

A: Yes. EN 10204 3.1 Material Test Certificates accompany every shipment, verifying chemical composition and mechanical properties of the raw coil or plate.

Anping Yilida Metal Wire Mesh Co., Ltd. is one of the most reliable round hole perforated metal manufacturers and suppliers in China, also supports customized service. Please feel free to buy bulk high quality round hole perforated metal made in China here from our factory.

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