Perforated sheet for screening, filtration and separation


Costacurta punched perforated plates are available from stock with hole diameters from 0,3mm dia with large open areas in stainless steel 304 & 316 as well as carbon steel in sheets 2000x1000.

punched plates
Costacurta  Milled screen for filtration & separation

Perforated sheet metal plates for screening, filtration and separation.

Punched plates
Costacurta Punched perforated plates are available from stock with hole diameters from 0,3mm dia with large open areas in stainless steel 304 & 316 as well as carbon steel in sheets 2000x1000. Plate sizes of 6000x2000 can also be perforated to suit most filtration and separation applications. Thickness varies from 0,3mm to 20mm in carbon steel and 15mm in stainless steel

Normally the hole size of punched perforated plates in stainless steel is dictated by the ratio of hole diameter to plate thickness, which cannot be less than one. However Costacurta has a very competitive advantage, particularly for critical perforations, where the hole diameter needs to be slightly smaller than the plate thickness and very close together and very small holes.

Punched plates for use as filter screens and flour milling screens can be supplied with a variety of perforations including - round, square and slotted. They can also be supplied with perforated areas in special geometric shapes, for example trapezoidal or circular crowns and with different levels of surface finishing such as butter-finishing, sandblasting and electrolytic polishing.

Other perforations include decorative patterns for architectural purposes.

In addition to flat punched plates with small hole perforations we are also able to supply fabricated perforated cylinders flanged both ends, baskets, trays and screens in a combination of shapes and sizes in a very wide range of materials -: High tensile steel stainless steel, titanium, nickel, monel, incoloy, inconel, hastelloy, cupronickel alloy, non-metallic materials, brass, copper, aluminium, bronze, plastic, pvc, teflon etc.

Drilled & Milled plates
Costacurta drilled or milled plates are perforated by machining using multi-spindle heads or special multi-tool milling heads. This process enables perforations to be achieved which are substantially smaller in size than the thickness of plate, enabling high open area screens with small hole section. Thus making them suitable as filter screens or screens for special machines and presses as used in the food, paper & pulp, milling and sludge treatment industries.

Perforation by machining enables a variety of hole sections to be achieved covering - conical, stepped, cylindrical, with perforations at 60, 45 degrees or straight.

As with punched plates, flour Milling, Food, paper & pulp screens can be offered in several materials and finishes.

Perforated filter plates hole sizes are available from 0.8mm to 10mm

  • continuous chemical plant waste water and de-watering processes
  • filtering and separation in beer & wine production plants
  • filtering and separation in presses for juice, edible oil and food processes
  • filtering and separation in chemical plant and potassium industry
  • filtering and separation of impurities in extruders for plastic and synthetic fiber production
  • filtering and separation of impurities in pulp & paper presses
  • filtration and separation in juice, sugar and starch production
  • increasing product throughput in the milling of plastics, grain and animal feed
  • separation of solid materials in linear & vibrating screens in mining
  • separation of solids in screens for cement, lime and plaster processes

Costacurta drilled plate for filtration & separation 

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