Perforated Metal - Functional and Stylish Material for Architectural and Industrial Applications

Features Specifications Technology Application Inquriy

1. The life of perforated metal is very long and it can be used for a long time in various environments without being easily damaged.

2. The perforated metal made of stainless steel has a layer of chrome plating on its surface, which makes it have excellent corrosion resistance and can maintain long-term durability even in humid or highly corrosive environments.

3. There are many materials for perforated metal. Most of them are stainless steel plates, low-carbon steel plates, galvanized plates, PVC plates, cold-rolled coils, hot-rolled coils, copper plates, aluminum plates, etc.

4. The hole types of perforated metal are varied. From simple circles and squares to complex patterns and designs, they can be customized according to customer needs. This diversity not only makes the perforated metal more beautiful in appearance, but also allows the most suitable hole type to be selected according to different usage occasions.

5. The surface is flat. The last process is flattening: the curved plate is flattened by the roller of the flattening machine.

6. Easy to clean: Perforated metal is widely used in life. General dust and dirt can be removed by gently wiping or washing with water.

Specifications

ROUND HOLES STAGGERED PATTERN
HOLE	CENTERS	GAUGE / PLATETHICK.	OPEN AREA
.020" RD	.045" Stag	26	18%
1/32" RD	1/16" Stag	22	23%
3/64" RD	5/64" Stag	24	33%
3/64" RD	3/32" Stag	22 thru 18	23%
1/16" RD	3/32"Stag	22 thru 16	40%
1/16" RD	7/64" Stag	20 thru 16	30%
1/16" RD	1/8" Stag	26 thru 16	23%
5/64" RD	1/8" Stag	22 thru 14	35%
3/32" RD	5/32" Stag	24 thru 14	33%
3/32" RD	3/16" Stag	24	23%
.117 RD	5/32" Stag	18	51%
1/8" RD	3/16" Stag	24 thru 11	40%
1/8" RD	7/32" Stag	14 thru 12	30%
1/8" RD	1/4" Stag	14, 13	23%
9/64" RD	3/16" Stag	18	51%
5/32" RD	3/16" Stag	22 thru 16	63%
5/32" RD	1/4" Stag	20 thru 10	35%
3/16" RD	7/32" Stag	22 thru 16	67%
3/16" RD	1/4" Stag	24 thru 12	51%
3/16" RD	5/16" Stag	10, 3/16"	33%
3/16" RD	3/8" Stag	14 thru 10	23%
1/4" RD	5/16" Stag	20 thru 16	58%
1/4" RD	3/8" Stag	26 thru 1/4"	40%
17/64" RD	5/16" Stag	20	66%
5/16"RD	7/16" Stag	20 thru 1/4"	46%
3/8" RD	9/16" Stag	20 thru 1/4"	40%
1/2" RD	11/16" Stag	20 thru 1/4"	48%
1/2" RD	3/4" Stag	16	40%
5/8" RD	7/8" Stag	10 thru 1/4"	46%
3/4" RD	1" Stag	16 thru 1/4"	51%
1" RD	1-3/8" Stag	10 thru 1/4"	48%
1-1/4" RD	1-5/8" Stag	1/4"	54%
1-1/2" RD	2" Stag	1/4"	51%
2" RD	2-1/2" Stag	1/4"	58%
2-1/2" RD	3" Stag	3/16"	63%
3" RD	3-1/2" Stag	3/16"	67%
4" RD	4-1/2" Stag	10	72%

Technology

Hole Pattern
Hole pattern is the arrangement of holes on a sheet - either staggered or straight rows. In a staggered hole pattern, the direction of the stagger is normally parallel to the short dimension of the sheet. The standard pattern is 60Â° staggered. It is the strongest, most versatile, and economical pattern of the perforated choices. Also available are straight and 45Â° hole patterns, available by special order.

Hole Size
Hole size is the diameter of the perforation. HUIJIN carries a wide range of round hole sizes (from 0.020 to 1 inch) and can special order any hole size required as long as it meets minimum hole size requirements.

Hole Center
Hole Center is the distance from the center of one hole to the center of the nearest hole in the next adjoining row. Hole center is one of two measures of perforation spacing. The other is open area. Because hole center and open area measure essentially the same property (perforation spacing), you need specify only one or the other, not both.

Open Area
Perforated sheets contain holes and material. Open area is the total area of the holes divided by the total area of the sheet and is expressed as a percent. In other words, open area describes how much of a sheet is occupied by holes. If a perforated sheet has 60 percent open area, then 60 percent of the sheet is holes and 40 percent is material. Note: Specify either Open Area or Centers, but not both.

Thickness or Gauge
Thickness is the measurement from the top surface to bottom surface of the material. Gauge is the most common measurement, but thickness can also be measured in fractional inches or millimeters.

End Patterns
End pattern is the pattern of the perforations at the beginning and the end of the sheet. End patterns are either finished or unfinished. An unfinished end pattern is standard. A finished end pattern requires special tooling and is typically more expensive.

Length and Width
Length is the overall measurement of the long side of the sheet; width is the overall measurement of the short side of the sheet. Note that mill tolerances for length and width apply to stock sheets unless otherwise specified. If you have a stock sheet cut-to-size, cut-tolerances apply. To specify other than standard tolerances, please use the perforated round hole pattern quote form to specify the required tolerances.

Quantity
Quantity is the number of full sheets or cut pieces you need. Unless otherwise specified, the standard tolerance on quantity is 'Exact Quantity'. In other words, HUIJIN will deliver the exact quantity you specify.

Bar Width
Bar width is the measure of the material between the outer edge of one hole to the outer edge of the nearest hole. If you specify bar width, be be sure that the bar width meets the guidelines for minimum bar width.

Margins
Margins are the blank (unperforated) area along the edges of the sheet. For stock sheets, the standard is minimum margins along the length and no margins along the width. To specify other than standard margins, use the perforated round hole pattern quote form. Provide the width of each margin on all four sides (measured from the edge of the sheet to the edge of the first hole) and the direction to which the margin is parallel (side or length dimension). Manufacturing considerations may affect margins. If the margins requested are not possible, the quote you receive will specify the new margins. Below is an example of a margin specification based on the illustration to the right: Margins: Â· 1 inch margins parallel to both 25 inch dimensionsÂ· 0.75 inch margins parallel to both 48 inch dimensions

Tolerances
There are tolerances on quantity, shearing, gcircle shearing, flatness, thickness and squareness, for perforated products. If you do not specify a specific tolerance, the standard tolerance applies. Tolerances can be specified on the perforated round hole pattern quote form.

Note: Special designs or sizes is also available at customers request.

Open Area Calculation：

To Find the Holes Per Square Inch:
H.P.S.I =(% Open Area)/78.54 x D2

Application

The application of perforated metal is quite extensive.

1. In traffic and municipal facilities, environmental noise control barriers made of perforated metal can effectively reduce the impact of traffic noise on the surrounding environment.

2. On the walls of buildings, perforated metal can be used as decorative panels, which are not only beautiful, but also can increase the ventilation and lighting of the building.

3. In addition, perforated metal is also widely used in many fields such as mechanical equipment protective covers, electronics industry, chemical machinery, pharmaceutical equipment, food and beverage machinery, etc.

Perforated Metal Ceiling

Perforated metal facade

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