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OVERVIEW OF A SELECTION OF SQUARE HOLE PERFORATIONS
Useful formula
Introduction
Round hole perforation
Formula
Calculating
Overview
Square hole perforation
Formula
Calculating
Overview
Download
Download Useful formulae
Hole width
w (mm)
Pitch
t (mm)
Ao (%)
1.5
3
25
3
5-6
36-25
4
6-12
47.4-11
5
7.5-9
44.4-31
6
8-11
56.5-29.8
8
10-14
64-32.6
10
12-20
69.5-25
12
16-18
56.2-44.4
15
20-23
56.2-42.5
20 up to approx. 60
22.5-32
79-39
Copyright © 2007 Europerf.
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