Construction Expanded metal mesh with fine workmanship for
Expanded Metal mesh are made from solid sheets or coil. A machine
then pierces and stretches the sheet into an open diamond pattern.
Expanded metal mesh come in two common types: raised and flattened.
Raised sheets have wavy ridges throughout, whereas flattened sheet
are truly flat.
Expanded metal mesh is commonly used to guard entry to an area or
object or as a barrier, but still allow the free passing of liquids
and gases. It can be purchased online and at any Metal Supermarkets
location. It can be cut to your exact specifications.
Click on a metal type below to see standard grades and sizes.
Expanded metal is truly a versatile product. Ferrous and
non-ferrous metal sheet can be expanded into a wide range of mesh
styles. There are standard expanded metal styles and numerous
variations in strand width and opening sizes can be produced to
create whatever architectural or industrial pattern is required.
Expanded metal is also produced in a flattened form which is
created by rolling standard or raised expanded metal.
Drywall Framing Systems
Drywall Trims (including Metal Cornerbead, Platinum® Paper-faced
COMSLAB® Composite Floor Systems
Clips (including Brick Connectors)
In bond shearing, the shear line falls through the bonds. The
result is an edge configuration of all closed diamonds. For bond
shearing the resultant dimensions must be in a multiple of the full
In random shearing, the shear line falls at random points on the
mesh pattern. Edges are open and diamonds are not matched. Random
shearing is necessary when the required overall dimensions are not
a multiple of the full diamond dimensions.
SWD - Nominal dimension, Short Way of Design
LWD - Nominal dimension, Long Way of Design
When referring to a sheet size the SWD is always referred to before
the LWD. For example a 4x8 sheet means 4 foot dimension is in the
SWD direction and 8 foot dimension is in the LWD direction.
SWO - Short Way of Opening
LWO - Long Way of Opening
STRAND THICKNESS - Gauge thickness of the base metal
STRAND WIDTH - Amount of metal fed under dies to produce one
EDGE CONFIGURATION - Condition of the edge of an expanded metal
sheet. Usually refers to “open” (random) or “closed” (bond) diamond
edges produced from shearing.
EXPANDING - An expanding press simultaneously slits and stretches
base material to form a diamond pattern.
LEVELLING - Expanded metal is usually levelled after the expansion
process by a levelling roller.
RAISED (abbreviated R) - Expanded metal as it comes from the press.
The strands and bonds are set at a uniform angle to the plane of
the sheet. This gives added strength and rigidity, as well as a
skidding resistant surface.
FLATTENED (abbreviated F) - Expanded metal that has been
cold-rolled after expansion, to provide a smooth, flat and level
sheet. The flattening process reduces the original gauge of the the
base metal and the strand width increases slightly. Some of the
heavier expanded metals can not be flattened.
SHEARING - Cutting expanded metal to size to produce various sheet
sizes. May be “bond” or “random” sheared.
Expanded metal is often referred to as diamond punched, stretched
metal or security mesh. Due to its method of manufacture, expanded
metal is one of the most economical steel mesh, or grating
material, on the market.
The strength of expanded metal runs along the long dimension, not
the short dimension. Sheets of expanded generally come in 4’ short
dimension and 8’ long dimension. The long dimension is
approximately double that of the short dimension. Expanded metal
open area percentage typically falls between 60% to 80%.
This product is ideal for security, decoration or traction