Expanded metal grating for heavy-duty structural flooring
Expanded metal grating is a heavier-gauge expanded metal produced specifically for structural flooring, platform walkways, and perimeter protection. It combines an open diamond pattern with high load-bearing capacity, allowing free passage of light, air, liquids, and debris while providing reliable foot traction.
Manufactured to print with specific cut lists, custom panel sizes, perimeter banding, and hot-dip galvanized finish.
Available materials
Carbon & Stainless
Carbon steel, 304 & 316 stainless
Standard finishes
Hot-Dip Galv
Mill finish, hot-dip galv, powder coated
Pattern style
Raised Diamond
Anti-slip traction open grating mesh
Load profile
High Strength
Structural pedestrian & light vehicle loads
Engineered to withstand harsh corrosive and high-impact conditions. Carbon steel units are typically hot-dip galvanized after expansion to provide seamless 360-degree zinc encasement.
Expanded metal grating is widely chosen where open-mesh strength is needed without the excessive weight of solid steel plate or heavy cast gratings.
Industrial platforms & walkways
Slip-resistant, high-strength open surface for safe worker movement over plant floors.
Machine guards & enclosures
Rigid physical shielding that maintains airflow, ventilation, and direct visibility.
Mezzanine & cat-walk flooring
Lightweight open-mesh spans that reduce structural dead load while meeting load ratings.
Need custom sheet sizes, cutouts, or perimeter banding?
Mutual Metal fabricates expanded metal grating to project cut lists, ready for immediate installation across industrial and structural sites.
Engineered specifications for heavy-duty installations
Review standard gauge ranges, structural load ratings, alloy choices, and typical industrial use cases for our manufactured metal products.
Standard sheet thickness ranges from 0.048 in up to 0.150 in for structural grade profiles.
Engineered for concentrated pedestrian and vehicular traffic with minimal deflection.
Primary choice for industrial walkways, equipment enclosures, safety screens, and flooring.
Available in carbon steel, 304/316 stainless steel, and mill or hot-dip galvanized finishes.
Standard gauge & application matrix
Typical configurations for perforated, expanded, and grating profiles.
| Profile & grade | Thickness / gauge | Available materials | Load rating | Primary applications |
|---|---|---|---|---|
| Heavy industrial grating | 9 GA (0.150 in) | Carbon steel, hot-dip galvanized | Up to 500 lbs/sq.ft uniform load | Industrial platforms & mezzanine flooring |
| Standard walkway mesh | 10 GA (0.134 in) | Carbon steel, 304 stainless steel | Up to 350 lbs/sq.ft uniform load | Catwalks, stair treads, ramp surfacing |
| Protective enclosure panel | 12 GA (0.105 in) | Carbon steel, 316 stainless steel | High impact resistance | Machinery enclosures, security partitions |
| Filtration & infill sheet | 16 GA (0.060 in) | 304 & 316 stainless steel | Medium structural rating | Ventilation panels, architectural facades |
| Lightweight safety screen | 18 GA (0.048 in) | Galvanized steel, stainless steel | Barrier & debris protection | Equipment guards, railing infills |
Carbon steel
Economical, high structural rigidity for welded assemblies and indoor installations.
304 / 316 stainless steel
Superior corrosion resistance for harsh chemical, food-grade, or coastal environments.
Hot-dip galvanized (HDG)
ASTM A123 compliant zinc barrier coating offering long-term outdoor rust protection.
Need custom sheet sizes, open area ratios, or load calculations? Our engineering team reviews project drawings for exact manufacturing quotes.