China Customized Flattened Expanded Metal Manufacturers Suppliers Factory - Made in China

Flattened Expanded Metal Manufacturer for Industrial Flooring, Screening & Architectural Applications

Smooth, flat expanded metal manufactured by cold-rolling standard raised mesh through precision leveling mills. The flattening process elongates the diamond pattern and aligns strands parallel to the sheet plane, providing a smooth, continuous surface without raised edges or burrs.

Carbon Steel Flattened 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 Flattened 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 Flattened 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 Flattened 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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Flat Expanded Metal Sizes
Materials：Aluminum,Carbon Steel,Galvanized Steel,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...
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Product Types

Light Gauge Flattened Mesh

Structure: Cold-rolled thin sheet mesh with SWD openings under 10.0 mm (0.394 inches).
Key Features: Smooth, flush profile prevents filter media tearing and allows safe tactile handling.

Medium and Heavy Duty Flattened Mesh

Structure: Cold-rolled structural sheet expanded from carbon steel or aluminum up to 4.0 mm (0.157 inches) base thickness.
Key Features: Combines high open-area ventilation with a level surface for flush welding, sliding contact, or secondary stamping.

Technical Specifications

Parameter	Metric Range	Imperial Range	Manufacturing Tolerance
Post-Flattened Thickness	0.40 mm to 5.0 mm	0.016 inches to 0.197 inches	+/- 0.08 mm (+/- 0.003 inches)
Strand Width	0.50 mm to 6.0 mm	0.020 inches to 0.236 inches	+/- 0.10 mm (+/- 0.004 inches)
SWD (Short Way of Diamond)	2.0 mm to 50.0 mm	0.078 inches to 1.968 inches	Pitch accuracy +/- 0.30 mm
LWD (Long Way of Diamond)	4.0 mm to 100.0 mm	0.157 inches to 3.937 inches	Pitch accuracy +/- 0.50 mm
Open Area Ratio	30 percent to 80 percent	30 percent to 80 percent	Calculated per tool die geometry
Standard Sheet 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 Panels, Standard Mill Sheets, Continuous Coils (up to 1250 mm width)

Material Options

Carbon Steel (Q195, Q235, A36, S235JR)

Cost-effective structural material for powder-coated enclosures, machine guards, and internal frames.

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

High corrosion and heat resistance for food contact equipment, marine filtration, and chemical processing trays.

Aluminum (1050, 3003, 5052)

Lightweight, ductile material ideal for architectural ceiling tiles, HVAC screens, and acoustic covers.

Pre-Galvanized Steel

Provides economical rust protection for indoor fixtures, cages, and HVAC filter support frames.

Surface Finishes and Processing

01/

Hot-Dip Galvanizing (ASTM A123 / EN ISO 1461): Applied after flattening to cover freshly cut strand edges with 60 to 85 microns of protective zinc coating.

02/

Powder Coating: Available in standard RAL color spectrums to provide UV protection and decorative finishes.

03/

Ultrasonic Degreasing: Multi-stage solvent bath washing that removes rolling lubricants prior to automated welding or cleanroom packaging.

04/

Deburring and Edge Trimming: Mechanical roller deburring to eliminate micro-burrs and edge wave for automated press feeding.

Primary Applications

Filtration Media Support

Structural backing for pleated synthetic, paper, or wire mesh air and hydraulic filter elements.

Machine Guarding and Safety Enclosures

Flush-surface protective barriers around rotating drives, belt conveyors, and high-voltage areas.

Architectural Infill and Ceiling Panels

Smooth interior acoustic panels, decorative sunshades, cabinet door inserts, and wall cladding.

Industrial Shelving and Material Handling

Flat drying racks, parts washing baskets, warehouse shelf partitions, and locker panels.

Security Doors and Window Guards

Flush-fitting window grilles, screen door mesh, and ventilation louvers.

product advantages

Cold-Rolling Precision

Heavy two-roll cold rolling mills deliver uniform reduction across the full sheet width, keeping post-flattened thickness variation within +/- 0.08 mm.

Camber and Flatness Control

Post-flattening hydraulic tension levelers eliminate coil set, twist, and center buckle to ensure flat resting panels on automated processing tables.

Dimensional Inspection

Laser micrometers and optical comparators monitor SWD and LWD pitch dimensions, sheet squareness, and overall thickness during production runs.

Compliance Certification

Shipments are backed by EN 10204 3.1 Mill Test Certificates verifying raw material heat numbers, chemical composition, and mechanical properties.

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 does flattening change the dimensions of standard expanded metal?

A: Cold rolling flattens strands parallel to the sheet surface, reducing the overall mesh thickness to match the strand gauge. This process slightly elongates the LWD (Long Way of Diamond) dimension while keeping the SWD (Short Way of Diamond) dimension constant.

Q: Is flattened expanded metal suitable for secondary stamping and welding?

A: Yes. Because the strands are leveled flush on both sides, flattened expanded metal provides a smooth contact surface that integrates cleanly into stamping dies, robotic welding fixtures, and channel frames without gap interference.

Q: How do you prevent sheet bowing or warping during the cold-rolling process?

A: Uneven pressure during cold rolling can cause center buckle or edge wave. We use multi-roll hydraulic tension levelers post-flattening to equalize internal stress, maintaining diagonal squareness within +/- 2.0 mm on standard 4 x 8 feet panels.

Q: What is the difference between Pre-Galvanized and Post-Hot-Dip Galvanized flattened mesh?

A: Pre-galvanized mesh is expanded from pre-coated steel coil, leaving raw steel exposed along sheared strand edges. Post-hot-dip galvanizing applies zinc after the slitting, stretching, and flattening processes are complete, fully sealing all exposed edges against atmospheric corrosion.

Q: What details are required to obtain an accurate technical quotation?

A: Please provide material grade, original base sheet thickness, strand width, SWD x LWD dimensions (or target post-flattened thickness and open area percentage), panel dimensions or coil width, surface treatment, and order quantity.

Q: Are material test reports and compliance documents included with shipments?

A: Yes. Every order includes an EN 10204 3.1 Mill Test Certificate covering chemical analysis, tensile testing, and dimensional inspection results. RoHS and REACH reports are provided upon request.

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

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