Stabbed hole Type B

Stabbed hole Type A

Stabbed hole in staggered row (RR-Z)

Perforation designation: RR (w) Z (t1*t2) tip 1

  • Theoretical open area (%):
  • A0 = 78,5 * w2 / 0,5 (t1 * t2) * 100 u %
  • Number of holes per m2 : n = 1.000.000 / 0,5 (t1 * t2)

Perforation designation: RR (w) Z (t1*t2) tip 2

NOTE: This type of perforation is especially suitable for grinding fruit (apple, pear…)

Stabbed hole in parallel row (RRU)

Perforation designation: RR (w) U (t1*t2)

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Stabbed perforation (pdf).

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