The hole spacing is also referred to as pitch. It is a measurement that defines the distance between two adjacent holes (from hole centre to hole centre) in a perforated material, such as a perforated sheet.
Hole spacing (pitch) is a decisive factor in the manufacture of perforated components. The hole spacing describes the distance between two adjacent holes. This dimension is part of the standardisation and determines the density and thus the number of holes on a component or per unit area. As is customary in metal technology, the distance between the holes is specified in millimetres.
SCHÄFER Perforated Metal has a wide range of options for processing the individual requirements and ideas of our customers.
The pitch (t) or hole spacing can be found in the short designation of a perforated sheet just before the applicable DIN standard:
- Hole width (w)
- Pitch or hole spacing (t)
- Web width ©
- Free cross-section (A₀, here in the example: 60%)
The distance between the holes affects the function of a perforated plate. With a small pitch and depending on the hole diameter, the component is less permeable (e.g. to air or liquids) but offers greater stability and structure. With a larger distance between the holes, the component is more permeable, which can be ideal for applications where air or liquid flow is important. In this context, the hole geometry also plays an important role.
Together with a cooling unit (a Sidecooler or Backcooler), the heat exchanger forms a secondary cold water circuit. If cooling fails in the primary circuit (belonging to the building), pumps in the heat exchanger continue to pump water in the secondary circuit. Cooling can then be guaranteed for the IT components for some time, depending on the water volume in the secondary circuit.