OEM Galvanized Expanded Metal Mesh Floor

Expanded metal mesh flooring is produced by simultaneously slitting and stretching a low‑carbon steel sheet, creating a uniform pattern of diamond‑shaped openings. The process yields a product with high open area, excellent slip resistance, and a favorable strength‑to‑weight ratio, making it suitable for walkways, platforms, and mezzanine decks in industrial environments.

Material and Manufacturing Process

The base material is typically hot‑rolled mild steel conforming to ASTM A36 or equivalent, selected for its consistent yield strength (≈250 MPa) and weldability. After expanding, the mesh undergoes a hot‑dip galvanizing line where it is immersed in molten zinc at approximately 450 °C, forming a metallurgical bond. Coating thickness follows ISO 1461, commonly ranging from 55 µm to 85 µm (Z275 to Z350) depending on customer specification, providing corrosion protection suitable for indoor and semi‑outdoor installations.

Technical Specifications

Applications

The open‑grid design allows drainage, ventilation, and light transmission while providing a stable walking surface. In food processing plants, the mesh prevents accumulation of liquids and facilitates cleaning cycles. In automotive assembly lines, it supports chassis dollies and conveys parts without trapping swarf. Outdoor loading docks benefit from its slip‑resistant surface and corrosion resistance when galvanized to Z350 levels. The product is also used as protective grating over trenches, cable trays, and machinery guards where impact loads are moderate but visibility is required.

Quality Control and Testing

Each batch undergoes dimensional verification using calibrated gauges to ensure strand thickness and opening tolerances stay within ±0.1 mm of the drawing. Galvanizing thickness is measured with a magnetic‑induction probe on at least five random points per panel, accepting only readings ≥55 µm for Z275 classification. Visual inspection checks for uniform zinc coverage, absence of bare spots, and proper bonding. Mechanical testing, such as tensile strength of a sampled strand, is performed per ASTM A370 to confirm base metal properties after expanding. All results are recorded and traceable to the production order.

Customization Options

• Strand thickness from 1.2 mm to 4.0 mm
• Opening sizes ranging from 8 mm SWL to 75 mm SWL
• Material choice: cold‑rolled steel, stainless steel (grade 304/316), or pre‑galvanized substrate
• Coating options: hot‑dip galvanizing, electro‑galvanizing, or powder‑coated finishes
• Panel dimensions custom‑cut to length, width, or irregular shapes
• Secondary operations: edge bending, framing, or welding of support brackets

Packaging and Export

Finished panels are stacked on wooden pallets with interleaving cardboard or plastic sheeting to prevent surface abrasion. Each pallet is secured with steel strapping and stretch‑film wrapped to protect against moisture during transit. For overseas shipments, pallets are fitted with ISPM‑15 compliant heat‑treated lumber and labeled with handling instructions. Consolidated container loads typically accommodate 20‑30 m² per pallet, allowing efficient utilization of 20‑ft or 40‑ft containers. Documentation includes material certificates, coating thickness reports, and packing lists prepared according to the buyer’s requirements.

Frequently Asked Questions

• Can dimensions be customized?
  Yes. Panel length, width, and opening geometry are adjusted according to supplied drawings or sketches.
• What information is required before quotation?
  Required data include base material grade, desired strand thickness, opening size, coating class (Z275/Z350 or other), quantity, and any secondary operations such as edge treatment.
• How is quality inspected?
  Inspection covers dimensional accuracy, coating thickness via magnetic‑induction measurement, visual surface review, and mechanical tensile tests on sample strands.
• What packaging methods are available?
  Standard packaging uses palletized stacks with interleaving protective layers and stretch‑film; custom crating or boxed packaging can be arranged upon request.
• How are export shipments protected?
  Shipments employ ISPM‑15 pallets, moisture‑blocking film, and secure strapping; additional corner boards are added for high‑stack loads.
• What is the typical production lead time?
  Lead time ranges from 2‑4 weeks for stock‑size panels and 4‑6 weeks for fully customized orders, depending on coating schedule and material availability.
• How are samples arranged?
  Sample panels (up to 300 mm × 300 mm) can be dispatched via express courier; costs are credited against a subsequent order.

Contact for Inquiry

To discuss specifications, request a quotation, or arrange sample shipment, please use the inquiry form below. Our technical team will respond with a detailed proposal including lead time, pricing, and any required compliance documentation.