China Black Powder Coated Metal Mesh Fence Manufacturer

The fence consists of low‑carbon steel wires welded into a uniform square or rectangular mesh, subsequently coated with a thermoset black powder finish. This combination provides a baseline tensile strength of approximately 350 MPa while delivering a corrosion‑resistant surface suitable for outdoor industrial environments.

Material Composition and Coating Process

Base material is typically Q195 or Q235 steel with a carbon content below 0.20 %, chosen for its weldability and consistent mechanical properties.

Wire diameters range from 2.0 mm to 4.5 mm, and the mesh opening can be specified from 12 mm × 12 mm up to 50 mm × 50 mm depending on the required security level.

After welding, the panels undergo a pretreatment phosphate wash, followed by electrostatic application of a black polyester powder coating cured at 180‑200 °C, resulting in a film thickness of 80‑120 µm and a pencil hardness of at least 2H.

Structural Specifications

Parameter	Typical Value / Range
Base Steel Grade	Q195 / Q235
Wire Diameter	2.0 mm – 4.5 mm
Mesh Opening	12 mm × 12 mm – 50 mm × 50 mm
Panel Width	Up to 3.0 m (customizable)
Panel Height	Up to 3.0 m (customizable)
Coating Thickness	80 µm – 120 µm
Coating Type	Black polyester powder
Tensile Strength (wire)	≈ 350 MPa
Elongation at Break	20 % – 25 %
Salt Spray Resistance	≥ 500 h (ASTM B117)
Surface Hardness	≥ 2H (pencil)

Mechanical Performance

The welded joints retain over 90 % of the parent wire’s tensile strength, ensuring the panel can withstand dynamic loads such as wind pressure or impact from debris.

Elongation at break for the wire is typically 20‑25 %, providing sufficient ductility to accommodate minor deformation without cracking the coating.

Under a uniform wind load of 1500 Pa, a 2.5 m × 2.5 m panel with 3 mm wire shows a deflection under 5 mm, confirming adequate stiffness for perimeter security applications.

Design Flexibility and Customization

Customization is driven by project‑specific requirements rather than a fixed catalog.

• Mesh aperture size
• Wire diameter
• Panel dimensions (height and width)
• Frame profile (square tube, angle, or C‑channel)
• Post type and spacing
• Accessories such as barbed wire arms, razor ribbon, or lockable gates

Typical Applications

In manufacturing facilities, the fence provides a clear visual barrier that does not interfere with overhead crane operations due to its low profile and non‑reflective black finish.

For waste‑management sites, the coating resists chemical splashes and UV degradation, extending service life beyond untreated galvanized alternatives.

In agricultural zones, the small mesh options prevent livestock from pushing through while the black color reduces visual impact on the surrounding landscape.

Quality Assurance and Testing

Each production lot undergoes incoming material verification, including chemical analysis and tensile testing of wire samples.

In‑process checks monitor weld integrity via visual inspection and ultrasonic spot testing on a statistical basis.

Finished panels are subjected to adhesion testing (ASTM D3359) requiring a minimum rating of 4B, and salt‑spray exposure (ASTM B117) for 500 hours with less than 5 % loss of gloss or coating delamination.

Packaging and Logistics

Panels are stacked flat with corrugated cardboard interleaves and protected by edge guards to prevent deformation during transit.

Bundles are secured with polypropylene straps and placed in standard 20‑foot or 40‑foot containers, allowing up to 30 sqm of fence per pallet depending on panel size.

Each shipment includes a packing list, material test certificate, and installation guide, facilitating customs clearance and on‑site handling.

Request Technical Details or Quotation

For project‑specific specifications, lead times, or pricing information, please contact our technical team using the form below.

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