Stock Size Sheets
- Raised Mesh
- SWD: Plus 1/4" minus 0" per foot of width
- LWD: Plus 3/4 minus 0"
- Flattened Mesh
- SWD: Plus 1/4" minus 0" per foot of Width
- LWD: Plus 3/4" minus 0"
- Grating
- SWD: Plus 1/4" minus 0" per foot of width
- Camber
- Measured by placing a straight edge along the concave side of the sheet parallel to
the LWD, touching both ends. The maximum distance from the edge expanded metal
to the straight edge is the camber
- Raised Mesh
- 1/16" per foot of length
- Flattened Mesh
- 3/32" per foot of length
- Out of Square
- Expanded metal sheets are not perfectly square as manufactured. Stock size sheets and machine run non standard size sheets will be produced to the
following tolerances
- SWD: 1/16" per foot of Width
- LWD: 1/16" per foot of length
- Sheets That have to be perfectly square must go through a secondary process
of shearing.
- Flattening
- Flattened sheet thickness shall be plus or minus 10% of published thickness
or strand thickness
Non Standard Sheets
- Machine Run
- Where tolerances permit, machine run non standard sheet sizes are manufactured to the same tolerances as stock size sheets
- Random Shearing
- Stock size sheets can be random sheared when a closer tolerance is required.
This is a secondary process.
- Bond Shearing
- Bond shearing can sometimes be performed, with limitations. This is
a secondary process.
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