What is the difference between woven wire mesh & welded wire mesh?

 Woven wire mesh

Woven wire mesh is made through a woven process in which the weft wire (width wire) is thread through the warp wire (length wire), and continuing this process produces the mesh that is called woven wire mesh.

Warp Wire – All wires running lengthwise of the cloth as woven.
Weft  Wire – All wires running across the cloth as woven.

Welded wire mesh:

“Welded mesh” is an electric fusion welded prefabricated joined grid consisting of a series of parallel longitudinal wires with accurate spacing welded to cross wires at the required spacing. This type of mesh is a square grid of uniformly placed wires, welded at all intersections, and meeting the requirements.

How many different types of woven wire mesh are there?

Plain woven wire mesh

Crimped woven wire mesh 

Twilled weave woven wire mesh 

Plain Dutch weave mesh (Hollander mesh) 

Twill Dutch weave mesh 

Reverse Dutch weave mesh 

How to work out the mesh number for woven wire mesh ?

In one linear inch, the number of linear holes that in the woven mesh is the mesh number. This is an example of 4 MESH 

How to measure mesh aperture?

The space between, one wire and the second wire is the aperture for the mesh. 

How to calculate the open area for woven wire mesh?

The ratio of the area of the aperture to the area of the mesh expressed as a percentage is the open area for the mesh.

Percentage Open Area  example calculation for Mesh 6 wire dia (D=0.9mm) Aperture (A=3.33mm)

The mesh has a 62% open area

What is perforated mesh?

Metal sheets are punched out through a punching machine and it gives holes on the sheet which makes it perforated metal mesh. During the punching process, metal has been removed to make perforated metal.

What is expanded mesh?

Expanded metal mesh is produced through cutting, expanding, and making a hole in the metal sheet.