Product specifications
Detailed technical specifications for perforated metal, expanded metal, and bar grating products.
Direct Product Categories
Specification categories
Review standard dimensions, open area ranges, and manufacturing tolerances across industrial metal lines.
Perforated Metal Specifications
- Hole size0.020" to 1.00"+ diameter
- Sheet thickness26 gauge to 1/2" plate
- Open area5% to 75%
- Standards referenceASTM E323 / IPA
Expanded Metal Specifications
- Strand gauge range18-ga to 9-ga structural
- Open area35% to 80%
- Dimensions defined bySWD and LWD
- Standards referenceASTM F1267 / EMMA 557
Bar Grating Specifications
- Bearing bar spacing19, 15, 11, 7-space
- Standard panel sizes2'x20', 2'x24', 3'x20', 3'x24'
- Standards referenceNAAMM MBG 531
Technical parameter comparison
Review standard dimensional baselines, manufacturing tolerances, and governing standards across our core industrial product lines.
| Technical parameter | Perforated metalDetails | Expanded metalDetails | Bar gratingDetails |
|---|---|---|---|
Material thickness range | 26 Ga to 1/2" plate | 18-ga to 9-ga | 1/8" to 1/4" bar thickness, heights 3/4" to 2-1/2" |
Open area / spacing range | 5% to 75% open area | 35% to 80% open area | Bearing bar spacing 7-space to 19-space centers |
Governing standards | ASTM E323 / IPA | ASTM F1267 / EMMA 557 | NAAMM MBG 531 |
Typical materials | Carbon steel, 304/316 stainless, aluminum | Carbon steel, stainless, aluminum | Carbon steel, galvanized, stainless |
Custom dimensional and material requirements
Mutual Metal manufactures non-standard open areas, specialized alloy blends, custom patterns, and heavy-duty gauges outside standard catalog ranges.
Need help selecting the right specification?
Mutual Metal's engineering team can help match your exact technical requirements to the proper perforated metal, expanded metal, or bar grating specification. We provide custom tooling and precision fabrication for out-of-standard dimensions and harsh industrial environments.