


The black PVC coating provides a durable barrier against corrosion while delivering a uniform appearance suitable for security perimeters, recreational facilities, and industrial sites. Base wire is
Request a QuoteThe black PVC coating provides a durable barrier against corrosion while delivering a uniform appearance suitable for security perimeters, recreational facilities, and industrial sites.
Base wire is low‑carbon steel that undergoes hot‑dip galvanizing to achieve a minimum zinc coating of 60 g/m² before polymer application.
The PVC layer is formulated with UV stabilizers and a carbon‑black pigment, resulting in a coating thickness typically ranging from 0.3 mm to 0.5 mm per side.
Adhesion between the galvanized substrate and PVC exceeds 2.5 MPa, measured per ASTM D4541, ensuring the coating remains intact under impact and flexing.
Hardness of the cured PVC falls between 80 and 90 Shore A, providing resistance to abrasion while maintaining flexibility for installation.
The formulation includes anti‑fungal additives to prevent mildew growth in humid environments.
Wire gauge selections range from 6 ga (4.9 mm) to 9 ga (3.8 mm) diameter, influencing tensile strength and mesh rigidity.
Standard mesh openings are 50 mm × 50 mm, with optional sizes of 38 mm × 38 mm for higher security or 75 mm × 75 mm for reduced material cost.
Roll heights are available from 0.9 m to 3.0 m, and lengths can be customized up to 50 m per roll to suit site‑specific layout requirements.
Wire is drawn to the target gauge, then cleaned and passed through a hot‑dip galvanizing line to achieve the prescribed zinc coating.
The galvanized wire proceeds to a PVC extrusion station where the molten polymer is applied uniformly via a die‑coating method, followed by immediate water quenching to set thickness.
Coated wires are woven on a pneumatic loom into the selected mesh pattern, then wound onto rolls with interleaving protective film to prevent surface damage during transit.
Inline laser gauges monitor PVC thickness every 2 m, triggering automatic adjustments if deviation exceeds ±0.02 mm.
Adhesion testing is performed on each production batch using a pull‑off gauge; results below 2.0 MPa cause line stoppage for investigation.
Impact resistance is verified by dropping a 2 kg steel ball from 1 m height onto a sample; no cracking or delamination is accepted.
Accelerated UV exposure (1000 h) per ASTM G154 confirms color stability with ΔE < 5 after testing.
In sports complexes, the black PVC coating reduces glare under floodlights, improving visibility for players and spectators while providing a non‑reflective boundary.
Industrial facilities benefit from the coating’s resistance to chemical splashes and UV degradation, extending service life in outdoor storage yards.
Municipal security perimeters select the black finish for its low‑visibility aesthetic, deterring unauthorized access without the visual starkness of bare galvanized steel.
| Attribute | Black PVC Coated | Hot‑Dip Galvanized | Aluminum | Standard Vinyl‑Coated |
|---|---|---|---|---|
| Coating thickness (mm) | 0.30‑0.50 | 0.05‑0.10 (Zn) | None (bare) | 0.25‑0.35 |
| UV stability (ΔE after 1000 h) | <5 | N/A | N/A | ≈8 |
| Adhesion strength (MPa) | >2.5 | N/A | N/A | ≈1.8 |
| Typical service life (years) | 15‑20 | 10‑12 | 20‑25 | 12‑15 |
| Weight increase vs. bare steel (%) | 8‑12 | 2‑3 | -30 | 5‑7 |
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