Oblong hole in staggered row (LRZ)

Perforation mark: LR (w*l) Z (t1*t2)

  • Open area (%): A0 = (w * l – 0,215 w2 / t1 * t2) * 100 u %
  • Number of holes per m2: n = 1.000.000 / t1 * t2
  • a2 = y * t1 + w
  • y = number of distances t1 parallel to a2
  • b2 = x * u + l
  • x = number of distances u parallel to b2
  • u = 0,5 t2
  • Perforation direction: a1 ili b1

Oblong hole in parallel row (LRU)

Perforation mark: LR (w*l) M (t1*t2)

  • Open area (%): A0 = (w * l – 0,215 w2 / t1 * t2) * 100 u %
  • Number of holes per m2: n = 1.000.000 / t1 * t2
  • a2 = y1 * t1 + w
  • y1 = number of distances t1 parallel to a2
  • b2 = x1 * t2 + l
  • x1 = number of distances t2 parallel to b2
  • Perforation direction: a1 ili b1

Oblong hole in staggered row (LRS)

Perforation mark: LR (w*l) S (t1*t2)

  • Open area (%): A0 = (w * l – 0,215 w2 / 0,5(t1 * t2) * 100 u %
  • Number of holes per m2: n = 1.000.000 / 0,5(t1 * t2)
  • a2 = y * t1 + w
  • y = number of distances t1 parallel to a2
  • b2 = x * u + l
  • x = number of distances u parallel to b2
  • u = 0,5 t2
  • Perforation direction: a1 ili b1

Download

Read more

Oblong holes (pdf).

Download PDF dokument with detailed technical information.

Read more

Perfom has modern equipment and all the resources necessary for quality production of perforated sheets.

More about capacities

Use our online form to order all our products in a simple and fast way.

Expect a quick response with all the necessary information related to your order.

Forma za naručivanje