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Perforated Metal

Perforated Metal is one of the most versatile products on the market today. A fully functioning product by it's shape of perforated opening and gauge and size--it can be tough in gauge and work hard at screening and filtering a variety of solids in the marketplace. On the other hand, it's same features can be lightweight in gauge, have small or large optically appealing openings and be very suitable for many architectural and display uses. For a look at some uses for perforated metal, please check the product pictures page.

Perforated Metal not only helps separate and screen solids, it diffuses light and air. If you are manufacturing a product that needs to be lighter, considering using perforated metal --- metal sheet retains a high percentage of it's strength after it's perforated but loses a lot of costly weight.

Perforations
     • Round Perforations: Staggered (60 degree pattern) is standard. Variations include 45 degree staggered, and straight line pattern.
     • Square Perforations: Staggered or straight line pattern.
     • Slotted Perforations: Side staggered, end staggered, or straight lines. Slotted
       perforations will be round end slots; specify if square end slots are required.
     • Other Perforations: Available upon request.
Spacing of Perforations
Spacing for large perforations will be designated be either Centers of perforations, or by the Open Area required. Spacing for small perforations will be designated by either Centers, or Open Area, or if more practical, by the Number of Perforations to the Square Inch.
Pattern of Perforations
     • Staggered Perforations, both Round & Square: Direction of the stagger will
       normally be the short dimension of the sheet. Straight row of hole is normally parallel
       to long dimension of sheet.
     • Slotted Perforations: The long dimension of the slots can be furnished with either the
       width or length of the sheet in most cases.
Margins
     • Perforated Stock Size Sheets & Plates: The long sides of the sheet will be supplied
       with minimum margins. The short sides of the sheet will have either minimum margins
       or no margins.
     • Sheets & Plates Re-sheared after Perforating: Special margins are available to
       specifications but they must carry a tolerance within the limits of the perforating tool.
     • Unfinished end pattern is standard in the industry.
Flatness of Sheets & Plates
In the majority of requirements, perforated sheets or plates can be furnished to AISI flatness tolerances. Before ordering any of the following special requirements, discuss then with our sales department:
     • Perforated sheets with extra wide margins.
     • Blank areas required within the perforated area.
     • Perforated sheets with very large percentage of open area.
     • Heavy gage metal in relation to the size of the perforation.
     • Special alloys.
     • Stretcher leveled sheets.

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