Steellong has been supplying perforated metal to our customers for 10 years. Steellong is one of the profession distributor in the perforated metal industry with the capability to provide our finished product in sheet, coil, panel, screen, or plate form. We can fabricate our perforated metal using many techniques to develop the exact product our customer requests.

We produce perforated plate using various raw materials including steel, stainless steel, and aluminum depending on customer requirements. The quality of our plate is unmatched. Our perforating capabilities are complimented by many additional capabilities including shearing, bending, rolling, welding, and heat treating.

Perforated Rectangular Hole:Product Features 
Available with large percent open area
Accurate hole sizes 
Available in lightweight materials
Available in corrosion resistant materials
Suitable for decorative applications
Available in heat-treated screen plate

Steellong supply perforated material in three basic forms. They are sheet, coil, and tube.
The most common form of perforated material because of its versatility and ease in handling, perforated sheets can be supplied either as flat, fabricated, and/or finished product.

If you can envision it,We can supply it. TEL:0086-318-7979121 E-mail:sales@steellong.cn MSN：Service@Steellong.Cn

• Steellong will do everything possible to provide exact and full product information based on metal mesh for your information.
• In order to give customer a clear image of the product,steellong has taken some pictures, customer can dowmload for reference but using our picture for business is forbidden.
• Due to technique and other factors,product image might be slight different to the products itself,in case everything will follow the products.
• Steellong appreciate any suggestion on our product information or picture or anything else.

Methods of perforation

Pins and needles
Rotary pinned perforation rollers are precision tools that can be used to perforate a wide variety of materials. The pins / needles can be used cold or heated.
Cold needle perforation can cause a "volcanic cone" shaped structure in the material, which can be beneficial for a number of applications.[citation needed] Cold perforation tools include needle punches.

Hot needle perforation melts the material being perforated, and creates a reinforcing ring around the hole. This can also be beneficial in many applications, as the ring assists in keeping the integrity of the material. There are a handful of manufacturers that specialize in hot and cold needle perforation tooling and equipment.

For microperforation, pinned rollers can be made from a variety of materials to include plastic, steel, aluminum, or other materials. Pinned sleeves can be slid onto a central shaft, so that pin patterns may be interchanged at will.
 
Die and punch
Die and punch sets can be used for thicker materials, or materials that require large gauge holes. The material is sheared by the sharp edges of the punch and die, and the chad is removed. One will see punched perforations in fruit produce bags. Other examples include hole punching and ticket punching. Punches can be designed for a desired hole shape. 
Laser perforation
Laser perforation can place many precise holes in a web. Laser perforations look similar in many respects to hot needle perforations. However, laser systems can be expensive to purchase and maintain. Many use an array of mirrors to direct the beam of light.

Photochemical Etching
Photochemical etching is an ideal process for grids, screens, meshes, filters, separators and other perforated metal applications.

The etching process produces consistent, burr-free holes as small as .004” in .002” thick material. As a general rule, minimum hole size is 110% of the thickness of the material, e.g. on .010” material, the smallest hole would be .011.”

Unlike mechanical perforating methods such as punching, stamping or laser cutting, photochemical machining leaves the material free of burrs and induced mechanical or thermal stress or deformation.

Applications range from heavy gauge effluent filtration to extremely fine thin-gauge filters and diaphragms for liquids and gases.

Metal meshes can be photo etched in a wide variety of alloys including steel, nickel, copper, brass, aluminum and more. Holes can be made in a variety of shapes and sizes at no additional cost in tooling.

Photo etched meshes, grids, filters and screens are used in many types of industrial applications. In many cases, chemical etching of metal meshes provide better value and performance than woven or punched products.