The most common required material are as following: 
Carbon steel sheet 
Galvanized steel sheet 
Stainless steel sheet 
Aluminum sheet 
Aluminum zinc steel sheet 

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Thickness or gauge for Perforated Metal Sheet 
Thickness of the metal sheets do not change during the perforation. Normally thickness is expressed in gauge. However, to avoid possible misunderstanding, we would suggest expressing them in inches or millimeters. 

Width and length for Perforated Metal Sheet 
The most common width and length are as following 
1000mm x 2000mm 1220mm x 2440mm 1250mm x 2500mm 
1250mm x 6000mm 1500mm x 3000mm 1500mm x 6000mm 

Margins for Perforated Metal Sheet 
Margins are the blank (un-perforated) area along the edges of the sheet. Normally the margin on the length are 20mm minimum, and margin along the width can be  minimum or at customers' requests. 

Hole arrangement for Perforated Metal Sheet 
Round hole are normally arranged in 3 types: 
Other hole patterns and hole arrangements can be custom made. 
Round hole, 60° , staggered 
Round hole, 45° , staggered 
Round hole, straight row 

Cutting & folding for Perforated Metal Sheet 
Rongde metal can do cutting and folding after perforating. 

Finish for Perforated Metal Sheet 
Rongde  metal can do the following finish according to customers' requirements. 

Natural finish for Perforated Metal Sheet 
Most of the perforated sheets are required to be natural finish no matter what kind of material they are. 

Oil spraying or Perforated Metal Sheet 
Some customers prefer the carbon steel perforated sheets to be oil sprayed to avoid the possible rusting because of the moisture during the long time sea shipping. 

Powder coating for Perforated Metal Sheet 
Rongde metal can do different colors powder coating, but minimum quantity might be required for some special colors. 

Packing for Perforated Metal Sheet 
Wooden pallets. 1 ton - 2.5tons (2200 lbs to 5500 lbs) per pallet. Each pallet will be packed by plastic bag.

Plain Steel Perforated Metal
Hole Diameter	Staggered Centers	Sheet Thickness	Open Area
0.045"	1.14mm	0.066?	0.033-0.039"	0.84-0.99mm	37.00%
1/16"	1.59mm	3/32"	0.027-0.033"	0.68-0.84mm	41.00%
1/16"	1.59mm	1/8"	0.027-0.066"	0.68-1.68mm	23.00%
5/64"	1.98mm	1/8"	0.027-0.053"	0.68-1.35mm	35.00%
0.081"	2.06mm	1/8"	0.053-0.066"	1.35-1.68mm	38.00%
3/32"	2.38mm	5/32"	0.053-0.066"	1.35-1.68mm	33.00%
1/8"	3.17mm	3/16"	0.027-0.127"	0.68-3.23mm	40.00%
5/32"	3.97mm	3/16"	0.027-0.066"	0.68-1.68mm	63.00%
3/16"	4.76mm	1/4"	0.027-0.127"	0.68-3.23mm	50.00%
1/4"	6.35mm	3/8"	0.033-0.111" , 0.25"	0.84-2.82mm, 6.35mm	40.00%
3/8"	9.52mm	1/2"	0.053-0.082" , 3/16"	1.35-2.08mm, 4.76mm	51.00%
3/8"	9.52mm	9/16"	0.059" , 0.119"	1.50mm, 3.02mm	40.00%
1/2"	12.70mm	11/16"	0.033-0.127" , 3/16"	0.84-3.23mm, 4.76mm	48.00%
1/4" Hex	6.35mm Hex	0.285	0.027-0.033	0.68-0.84mm	76.00%
	9.52mm Sq.	Cane?	0.053-0.066"	1.35-1.68mm	51.00%

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APPLICATIONS

• continuous chemical plant waste water and de-watering processes
• filtering and separation in beer & wine production plants
• filtering and separation in presses for juice, edible oil and food processes
• filtering and separation in chemical plant and potassium industry
• filtering and separation of impurities in extruders for plastic and synthetic fiber production
• filtering and separation of impurities in pulp & paper presses
• filtration and separation in juice, sugar and starch production
• increasing product throughput in the milling of plastics, grain and animal feed
• separation of solid materials in linear & vibrating screens in mining
• separation of solids in screens for cement, lime and plaster processes