PRODUCT RANGE

Drilled Screen

Drilled Screen

A complementary product line to our wedge wire screens, engineered for applications where round-hole geometry is preferred over V-wire slots. Precision-drilled perforated plates and cylinders manufactured on purpose-built drilling machines. Available in cylindrical (single-diameter), bi-cylindrical (step-drilled/counterbore), countersunk, conical, and cylindrical-conical hole profiles. Used in sugar centrifugation, paper machine drainage, chemical filtration, and specialty press applications.

APPLICATIONS

• Sugar centrifugation

• Paper machine drainage

• Chemical filtration

• Specialty press applications

• Shredding plants

• Recycling plants

• Dryer screens

MATERIALS

SS 304SS 304LSS 316SS 316LSS 316TiDuplexSuper DuplexS355S700Hardox 400/450/500

SPECIFICATIONS

DiameterCustom
Hole GeometriesCylindrical, bi-cylindrical, countersunk, conical
Open AreaApplication-specific
Surface FinishPolished to specification

MATERIAL SPECIFICATIONS

Indicative values. Specific service limits depend on operating chemistry, temperature, and stress state. Material certification per EN 10204 Type 3.1 supplied with order.

MaterialUNS / ENPRENChlorideMax Temp
SS 304S30400 / 1.430118–20≤ 200 ppm≤ 400 °C
SS 304LS30403 / 1.430718–20≤ 200 ppm≤ 400 °C
SS 316S31600 / 1.440124–26≤ 1000 ppm≤ 450 °C
SS 316LS31603 / 1.440424–26≤ 1000 ppm≤ 450 °C
SS 316TiS31635 / 1.457124–26≤ 1000 ppm≤ 550 °C
DuplexS32205 / 1.446233–38Brackish/seawater (limited)≤ 300 °C
Super DuplexS32750 / 1.4410≥ 40Seawater compatible≤ 300 °C
S355S355J2 / 1.0577Not for chloride exposure≤ 350 °C
S700S700MC / 1.8974Not for chloride exposure≤ 350 °C
Hardox 400/450/500Hardox 400/450/500Not for chloride exposure≤ 250 °C

MANUFACTURING TOLERANCES

Standard manufacturing tolerances. Tighter tolerances available on request and confirmed at order entry.

Slot RangeSlot Tolerance
0.02 – 0.10 mm± 0.005 mm
0.10 – 0.50 mm± 0.01 mm
0.50 – 2.00 mm± 0.03 mm
2.00 – 10.0 mm± 0.10 mm
> 10.0 mm± 0.20 mm
Diameter± 0.5 mm (≤ 500 mm), ± 1.0 mm (> 500 mm)
Length± 2.0 mm per meter
Flatness≤ 1.5 mm/m for flat panels
Ovality≤ 0.5% of OD for cylindrical screens
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