Small Hole Expanded Metal

Precision cold-formed metal mesh featuring tight diamond apertures with SWD dimensions starting from 1.0 mm (0.039 inches). Manufactured by simultaneous slitting and expanding thin metal sheet or coil, providing fine particulate separation, structural air flow, and physical screening without welded joints.

Carbon Steel Small Hole Expanded Metal
Materials：Carbon Steel
Specification：Our capability covers LWD ranging from 0.75 mm up to 400 mm, and SWD ranging from 2 mm to 150 mm. Sheet thickness ranges from 0.3 mm to 15 mm, with a...
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Galvanized Steel Small Hole Expanded Metal
Materials：Galvanized Steel
Specification：Our capability covers LWD ranging from 0.75 mm up to 400 mm, and SWD ranging from 2 mm to 150 mm. Sheet thickness ranges from 0.3 mm to 15 mm, with a...
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Stainless Steel Small Hole Expanded Metal
Materials：Stainless Steel
Specification：Our capability covers LWD ranging from 0.75 mm up to 400 mm, and SWD ranging from 2 mm to 150 mm. Sheet thickness ranges from 0.3 mm to 15 mm, with a...
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Aluminum Small Hole Expanded Metal
Materials：Aluminum
Specification：Our capability covers LWD ranging from 0.75 mm up to 400 mm, and SWD ranging from 2 mm to 150 mm. Sheet thickness ranges from 0.3 mm to 15 mm, with a maximum...
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Product Types

Standard Raised Small Hole Mesh

Structure: Retains the natural angled strand profile created during the expansion process, providing a three-dimensional surface texture.
Key Features: Increases surface area, provides mechanical grip, and enhances fluid diffusion or directional air deflection.

Flattened Small Hole Mesh

Structure: Passes through cold precision leveling rolls post-expansion to flatten strands parallel to the sheet plane.
Key Features: Delivers a smooth, uniform thickness surface without raised edges, preventing membrane abrasion or hand snagging.

Technical Specifications

Parameter	Metric Range	Imperial Range	Manufacturing Tolerance
Sheet or Foil Thickness	0.20 mm to 2.50 mm	0.008 inches to 0.098 inches	+/- 0.05 mm (+/- 0.002 inches)
Strand Width	0.25 mm to 3.00 mm	0.010 inches to 0.118 inches	+/- 0.08 mm (+/- 0.003 inches)
SWD (Short Way of Diamond)	1.0 mm to 10.0 mm	0.039 inches to 0.394 inches	Pitch accuracy +/- 0.20 mm
LWD (Long Way of Diamond)	2.0 mm to 20.0 mm	0.078 inches to 0.787 inches	Pitch accuracy +/- 0.40 mm
Open Area Ratio	20 percent to 75 percent	20 percent to 75 percent	Calculated per tool die geometry
Standard Panel Sizes	1000 x 2000 mm, 1220 x 2440 mm	3 x 6 feet, 4 x 8 feet	Squareness +/- 2.0 mm
Supply Formats	Flat Cut-to-Size Sheets, Master Coils (up to 1250 mm width), Slit Narrow Ribbons

Material Options

Stainless Steel (304, 304L, 316, 316L)

Offers acid, alkali, and heat resistance for marine filtration, chemical strainers, and food processing equipment.

Carbon Steel (Q195, Q235, A36)

Economical option for general industrial guards, internal filter frames, and powder-coated architectural components.

Aluminum (1050, 1060, 3003, 5052)

Lightweight, non-corrosive, and ductile material ideal for automotive grilles, HVAC filters, and acoustic covers.

Copper and Brass

High electrical and thermal conductivity for grounding layers, spark arrestors, and decorative interior panels.

Surface Treatments and Finishes

01/

Ultrasonic Degreasing: Solves oil contamination by thoroughly washing processing lubricants before cleanroom packaging or welding.

02/

Powder Coating: Available in standard RAL colors to enhance corrosion barrier properties and aesthetic appearance.

03/

Anodizing (for Aluminum): Creates a hard, corrosion-resistant oxide surface layer with color matching options.

04/

Electro-Galvanizing or Hot-Dip Galvanizing: Applies zinc protection for outdoor exposure and high-humidity environments.

Primary Applications

Industrial Filtration and Separation

Support mesh and outer protective sleeves for air intake filters, oil filters, and hydraulic strainers.

Electronics and Acoustic Shielding

Dust screens, speaker grilles, EMI/RFI enclosure barriers, and heat dissipation covers for appliances.

Architectural and Interior Design

Infill panels, decorative cabinet inserts, ventilation registers, and drop-ceiling tiles.

Pest and Debris Control

Fine gutter guards, chimney cap screens, foundation vent covers, and pest entry barriers.

Automotive and Equipment

Radiator stone guards, intake grilles, and exhaust heat shield linings.

Manufacturing Capabilities and Quality Control

Tooling Calibration

Carbide-tipped micro-dies are serviced on optical profile grinders to maintain clean shear edges and keep burr height below 0.03 mm.

Tension and Flatness Management

Post-expansion multi-roll leveling machines eliminate coil camber, edge wave, and twist for continuous roll-to-roll feeding.

Dimensional Inspection

Aperture uniformity (SWD and LWD), strand width, and weight per square meter are checked during each production run using optical comparators.

Certification

Material compliance is backed by EN 10204 3.1 Mill Test Certificates detailing chemical heat analysis, mechanical tensile values, and coating thickness records.

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: What is the smallest SWD (Short Way of Diamond) aperture available in small hole expanded metal?

A: We manufacture small hole expanded metal with SWD dimensions starting from 1.0 mm (0.039 inches). The minimum achievable aperture depends on the selected material grade and sheet thickness ratio.

Q: Can small hole expanded metal be supplied in continuous coils for automated stamping lines?

A: Yes. We supply small hole mesh in continuous master coils up to 1250 mm wide or slit ribbons down to 15 mm wide. Coil tension and roll flatness are controlled to prevent jamming during automated decoiling and press feeding.

Q: How does small hole expanded metal compare to fine woven wire mesh?

A: Small hole expanded metal is formed from a single solid sheet without overlapping wires or joint welds. As a result, it will not unravel when sheared to custom shapes, provides fixed aperture geometry under load, and offers a higher strength-to-weight ratio.

Q: What burr height can be expected on flattened small hole mesh?

A: Through post-expansion precision multi-roll leveling and deburring processes, we maintain burr height profiles below 0.03 mm. This prevents tearing when mesh is laminated against paper or synthetic filter media.

Q: What key details are required to get an exact OEM quotation?

A: Please specify the material grade, sheet or foil thickness, strand width, SWD x LWD dimensions (or target open area percentage), surface state (Standard Raised or Flattened), finish requirements, and sheet sizes or coil width/length.

Q: Are material certs and compliance documents provided with shipments?

A: Yes. Every shipment includes an EN 10204 3.1 Mill Test Certificate covering chemical analysis, tensile testing, and dimensional inspection results. RoHS and REACH compliance documentation is available upon request.

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

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