TYLER

The number of apertures per unit length, n is the number of apertures which are counted in a row one behind the other for a given unit length. The unit length may be 1 cm, 1 dm, Inch or any other unit of length. (The number of apertures with a length of 25.4 mm is designated as "Mesh")

Mesh = number of apertures per English inch = 25.4 : p

n/cm = number of apertures per cm = 10 : p

n/cm² = number of apertures per cm² = (10 : p)²

Open screening area, Ao: The percentage of the area of all the apertures in the total screening surface or the ratio of square of the nominal aperture width w and the square of the nominal pitch (= w+d), rounded to a full percentage value:

Ao = 100 (w : p)²

Type of weave  is the way in which the warp and weft wires cross each other.

Weight  G  of the steel wire cloth screen section in kg per m²

The actual value can be up to 3 % lower. The wire diameter can be calculated using the following equation:

Material: It is up to the user to specify the choice of material with respect to:

a) the final application of the wire cloth (e.g. resistance to environmental corrosion, suitability for food products etc.)

b) the further processing (e.g. suitability for shaping, welding and surface treatment).

Materials should be designated in accordance with appropriate standards, or if none exists, according to commercial specifications.