Following are some important factors that specify an effective order.

Materials: We offer perforated metal in carbon steel, aluminum, brass, copper, stainless steel and other materials. Choose your materials according to the functions and application requirements.

Hole size and patterns: In general it is advisable to use a hole size larger than the material thickness. We have tooling available for many different hole patterns and shapes. It is more economical to choose one of the available patterns, although special hole sizes and patterns can be accommodated at additional cost.

Open area
The higher the open area, the more material distortion takes place, especially when the perforated pattern is bordered by margins on all four sides.

Margins
Our perforating presses can be programmed to allow a wide variety of margins for your choice.

End patterns
A finished end pattern is often more expensive than an unfinished end pattern. If not specified, unfinished end patterns will be offered.

Tolerances
As with other manufacturing processes, tolerances tighter than the standard tolerances will result in increased cost. Where possible, stay within the standard tolerances.

Surface finish
Perforating, leveling and shearing normally leave slight surface imperfections behind that are considered acceptable in the industry. If required, special precautions such as vinyl coated material and paper interleaving can be taken, at additional cost.