Methods of Production
Metal Advances one strand width.
Die forms one-half of design.
Press opens, indexes, (slides over half diamond) and . . .
. . . die descends, completing.
Press opens, and above steps are repeated continuously.
The solid intersection of two strands
Nominal dimension, Short Way of Diamond
Nominal dimension, Long Way of Diamond
Actual dimension SWD and LWD. Measured form a point to a corresponding point on the adjacent diamond
Short Way of Opening
Long Way of Opening
The sides of the expanded metal design
Thickness of the base metal
Amount of material fed under dies to produce one strand
Open area of metal after expanding
Condition of edge of an expanded metal sheet. Usually refers to "open" (random) or "closed" (bonded) diamond edges produced from shearing
(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 thickness of the base metal
Expanded metal that is produced from heavier plate, usually low-carbon steel, with larger diamonds. It is typically used for walkways and platforms
Stock size pieces as manufactured (without being sheared to size)
A term used to describe special expanded metal products
Cutting expanded metal to produce various sizes and shapes (The standard is "random shearing". If the buyer desires "bond shearing" that must be specified at order entry)
(abbreviated S) (Same as "Regular" or "Raised") 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 skid-resistant surface
Style Designation Format
A combination of numbers, letters and abbreviations in a standard format permitting proper specification of dimension, thickness, style and weight of most commonly used expanded metal products (e.g. 3/4 #9, or 4.0 lb.)
Stock Size or Machine Run Sheets:
- Shall not vary greater than -0" +1/4" per foot of width (i.e. 48" could be 49")
- Shall not vary greater than -0" + 1/4" per foot of length (i.e. 96" could be 98")
- Expanded metal +/- 1/8" (open diamonds 4 sides)
- Grating +/- 1/4"
- Mini Mesh +/- 1/16"
- (LWD) +/- 1/2 of the width of the diamond (LW)
- (SWD) +/- 1/2 of the width of the diamond (SW)
- (LWD) +/- 1/8"
- (SWD) - 0 + 3/8"
Bond Shearing is ONLY available in Flattened Expanded Metal and may not be available in all products. We can, however, make custom dies for your application