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SWD: The distance from a point on a bond to a corresponding point on the following bond measured across the Short Way of Design.  This distance is also sometimes referred as "pitch SWD".

 

LWD: The distance from a point on a bond to a corresponding point on the following bond measured across the Long Way of  Design.  This distance is also sometimes referred as "pitch LWD".

 

SWO: Short Way of Opening, the distance measured from the inside of the bond across to the inside of the bond SWD.

 

LWO: Long Way of Opening, the distance measured from the inside of the bond across to the inside of the bond LWD.

 

Bond: The intersection of two strands and it is always the width of two strands.

 

Strand Thickness: Gauge thickness of sheet metal material of expanded metal. 

 

Strand Width: Amount of metal fed under dies to produce the expanded metal strand. 

 

Width: The measurement of the shortest side of the sheet or cut-to-size expanded metal piece.  The max size is bounded by the thickness.  Generally speaking , more than 3MM thickness expanded metal , the max size is 10 feet.

 

Length: The measurement of the longest side of the expanded metal sheet or cut-to-size piece.  In rolls,  the Max length is 100 feet.

 


 

            Un-Flattened Expanded Metal                                                Flattened Expanded Metal

              

 

Un-flattened Expanded Metal: Expanded metal mesh as it comes off the machine.  The strands and bonds are set at a uniform angle to the plane of the sheet.  This adds strength and rigidity, allows air circulation, distributes the load on the metal to the supporting frames as well as making a skid resistant surface. 

 

Flattened Expanded Metal: Manufactured by passing the standard expanded metal mesh sheet through a cold roll reducing mill parallel to the LWD.   By flattening the sheet, the bonds and strands are turned down to produce a smooth and flat surface, reducing the overall thickness and extended the diamond pattern (LWD).  Cross roll flattening is done by passing the expanded metal sheet through a cold roll reducing mill parallel to the SWD.  The result is the same except the diamond pattern SWD is extended. 

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