FLEXIBILITY OF DESIGN IS TRULY
UNLIMITED IF YOUR PERFORATOR
KNOWS YOUR NEEDS.
The flexibility of round, square, slot and other special perforations make it impractical to list every combination. The table below showing I.P.A. numbered perforations are common and are considered standard. For complete information on available patterns see your Remaly supplier.
|
Round Holes:
IPA
Numbers |
Perfor-
ations |
Centers |
Holes per
sq. in. |
Open Area |
Line |
|
106 |
1/16" |
1/8" |
- |
23% |
Staggered |
|
107 |
5/64" |
7/64" |
- |
41% |
Staggered |
|
108 |
5/64" |
1/8" |
- |
36% |
Staggered |
|
109 |
3/32" |
5/32" |
- |
32% |
Staggered |
|
110 |
3/32" |
3/16" |
- |
23% |
Staggered |
|
111 |
3/32" |
1/4" |
- |
12% |
Staggered |
|
112 |
1/10" |
5/32" |
- |
36% |
Staggered |
|
113 |
1/8" |
3/16" |
- |
35% |
Staggered |
|
114 |
1/8" |
7/32" |
- |
29% |
Staggered |
|
115 |
5/32" |
7/32" |
- |
46% |
Staggered |
|
116 |
5/32" |
1/4" |
- |
36% |
Staggered |
|
117 |
3/16" |
1/4" |
- |
51% |
Staggered |
|
118 |
3/16" |
5/16" |
- |
33% |
Staggered |
|
119 |
1/4" |
5/16" |
- |
58% |
Staggered |
|
120 |
1/4" |
3/8" |
- |
40% |
Staggered |
|
121 |
1/4" |
7/16" |
- |
30% |
Staggered |
|
123 |
1/4" |
1/2" |
- |
23% |
Staggered |
|
124 |
3/8" |
1/2" |
- |
51% |
Staggered |
|
125 |
3/8" |
9/16" |
- |
40% |
Staggered |
|
126 |
3/8" |
5/8" |
- |
33% |
Staggered |
|
127 |
7/16" |
5/8" |
- |
45% |
Staggered |
|
128 |
1/2" |
11/16" |
- |
47% |
Staggered |
|
129 |
9/16" |
3/4" |
- |
51% |
Staggered |
|
130 |
5/8" |
13/16" |
- |
53% |
Staggered |
|
131 |
3/4" |
1" |
- |
51% |
Staggered |
Ask about Specialty Patterns such as perfboard (1/4" holes on 1" straight centers), alternate feeds or spread centers. These offer different visual effects and serve to reduce open area. Various widths of bars (un perforated strips) may be left in the pattern to assist in mounting.
Decorative patterns in Grecian, Cane, and Octagon Cane, are common. Some companies have developed their own particular decorative patterns and within the I.P.A. is the greatest variety of design in the industry. Functional patterns can also be decorative.
Many companies are specialists in the field of architectural grilles. Others perforate vibrating screens and other types of processing screens in all types of metals for all types of industries.
Standard stock or standard dies are important to your planning. It should be clearly understood however, that any perforated design can become as economical as a listed pattern if the quantity or potential is great enough.
