About Perforated Metal

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What is Perforated Metal?

Perforated metal is a metal sheet that is punchedAluminum and Anodized Aluminum with holes in a uniform pattern.
It is used in many fields.

Where is it used?

Covers

Machinery covers, ornamental covers, speaker grills, storage, radiator grills, stove grills, protecting covers
Click HERE to see examples.

Automotive Use

Air filters, oil filters, mufflers, front grills, interior and exterior parts
Click HERE to see examples.

Noise and Heat Insulation

Heat insulation panels, noise insulation panels for construction sites, vehicles and vessels
Click HERE to see examples.

Architectural Applications

Wall paneling, partitioning, ornamentals, lighting equipment, exterior panels, fixtures, chairs, tables, ceilings
Click HERE to see examples.

Strainers

For production of sugar, pulp and paper,flour, oil refining, distillation columns
Click HERE to see examples.

Residential Applications

Boilers, ventilators, kitchen furniture, planters, shields for microwave ovens, dust boxes
Click HERE to see examples.

Seives

For screening grains, seeds, coal, sands, gravels and chemical products
Click HERE to see examples.

Granulation and Milling

For production of granular and tablet pharmaceuticals, cube sugar, instant coffee, agricultural chemicals, fertilizers, chemical products

For granulators

Used for granulating solid materials to specific size and shape desired in particular applications.

Applications

Production of granular and tablet pharmaceuticals, cube sugar, instant coffee, agricultural chemicals, fertilizers, chemical products, etc.

For Mills

Used in machines for physically crushing and milling solid materials.

Applications

Manufacture of drugs, agricultural chemicals, fertilizers, industrial chemicals, etc.

Perforated metals for granulators and mills are produced from materials and with plate thicknesses and hole sized suitable to particular applications.

Centrifugal Separators

For food, chemicals, pharmaceuticals, pulp and paper, mining and ceramic industries

For Centrifugal Separators

Used for separating crystals from a filtrate in chemical industry.

Applications

Production process in food, chemicals, paper making, pharmaceuticals, mining, and ceramic industries as well as sewage treatment, waste treatment and industrial waste water treatment.

Sectorial or conical shapes can be formed upon request.

Please contact for more information.

Please make full use of our fabrication services.

What is it made of?

Rolled Steel for General Structure(SS)
Cold-Rolled Steel (SPCC-SD)
Hot-Rolled Steel (SPHC-P)
Galvanized Steel(SGCC)(SGHC)
High-Tensile Steel
Stainless Steel(SUS)
Aluminum(ALP)
Galvanized Steel
- Electro-Galvanized Steel(SECC)(SEHC)
- Hot-Dip Zinc-Coated Steel(SGCC)(SGHC)
Surface-Treated Stee
Colored Steel
Brass(BSP)
Copper(CUP)
Titanium(Tip)
Polyvinyl Chloride
Rubber
Aluminium-Coated Steel(Alstar)

Feed Direction

*In the case of sieves, please specify direction the of flow of object to be sifted, because the through-put might be increased depending on the feed direction.

Round hole

<Example>
D=10 P=15 60 deg. staggered

Round end slot

Please specify the orientation of slots in relation to the width and length of perforated metal sheet.

Punching process

(1) Die layout

	Standard	Step-and-a-half	Two-steps-and-a-half
Feed direction
Feed direction
	Standard layout: The pattern at the beginning and end of the sheet is complete, providing the finished ends.	Optional layouts: When it is difficult to use the standard layout due to a hole size in relation to a plate thickness and/or a pitch required, such optional layout as a step-and-a-half and two-steps-and-a-half layouts is used. In such case, the pattern of holes at the beginning and end of the sheet is incomplete, as shown above, providing unfinished ends.

(2) Staggered holes

Standard layout	Step-and-a-half layout

As shown above, a perforating die layout for a staggered formation includes an even number of rows of punches in a die. The patterns at the beginning and end of the sheet are asymmetric.

Perforated areas (zone perforation)

For zone perforation, please specify A or B below.

A: Distance between the top end of the first hole and the bottom end of the last hole B: Distance between centers of the first and last holes	Perforation processing is available only in specified zones as illustrated above. (The finished metal sheet may be slightly strained.)

Slant and circular processing

Four-row die layout	Two-row die layout

Steps of die width are caused in slant and circular processing as illustrated above. (Steps are less noticeable in the case of single-row die layout.)

Margins

	With side and end margins	Without margins

A: Distance between the end of the sheet and end of the nearest hole B: Distance between the end of the sheet and center of the nearest hole Please note there are two kinds of dimensions.

Flatness (leveling)

All products have an excellent flatness, because they are subjected to corrective roll leveling after perforating process. Due to reaction of the forces accumulated in the perforated metal sheets during processing, the sheets may be slightly strained.

This should be noted especially in the following cases:

A　Margins are wide.
B A blank area is present between perforated areas.
C The pitch is low. (The percentage of open area is high.)
D The sheet to be processed is relatively thick.
E The sheet to be processed is very long.
F Stainless steel or a special material is to be processed.
G A margin must be left in a disk-shaped plate.

Cuttig

●In the case of cutting from standard size, the final product should have either:

(1) no margin on any sides; or
(2) a margin on some sides.

Please let us know if (1) is specifically required. Cutting to a specified size is also available.

(1) No margin on any sides

(2) Margin on some sides

Shown above are only examples of various cutting patterns available.

SUPERPUNCHING ^TM

Click to enlarge.* Not shown in full scale.


SUS304MK (Open Area 23%) t1×D0.75×P1.5 60deg. Staggered	SUS304L t1.5×D1.2×P2.4 60deg. Staggered	SUS304L (Open Area 22.6%) t2×D1.5×P3 60deg. Staggered

SUS304L (Open Area 40.3%) t3×D2×P3 60deg. Staggered	SUS304L t3×D3×P4 60deg. Staggered	SUS304L (Open Area 32.6%) t4×D3×P5 60deg. Staggered

SUS304L (Open Area 32.6%) t5×D3×P5 60deg. Staggered	A5052P (Open Area 30.2%) t6×D3.1×P5 Straight	SUS304L t6×D5×P8 60deg. Staggered

A5052P (Open Area 18.7%) t7×D5×P11 60deg. Staggered	SUS304 (Open Area 40.3%) t9×D10×P15 60deg. Staggered	SS400 Galvanized t12×D12×P23.5 Straight

SS400 (Open Area 15.7%) t16.0×D10×P24 60deg. Staggered

Aluminum and Anodized Aluminum

Click to enlarge.* Not shown in full scale.


Bronze Delustered(BN) 2.0T×D8×P12 60deg. Staggered	Black Delustered(KN) 2.0T×D8×P12 60deg. Staggered	Bronze Luster(BC) 2.0T×D8×P12 60deg. Staggered

Silver Delustered(CN) 2.0T×D8×P12 60deg. Staggered	Silver Luster(B1ED) 2.0T×D8×P12 60deg. Staggered	Stained(Pale).淡 Delustered(S淡N) 2.0T×D6×P9 60deg. Staggered