In addition to our custom design service, Multimesh also stock a high quality range of both perforated and expanded metal sheets which are available for rapid delivery.

Perforated metal

Available in mild steel, stainless steel and aluminium options, our perforated metal panels are available with a choice of hole size, pitch and thickness to suit all requirements. In addition, panels can also be cut-to-size and packaged in a way that suits each individual customer’s needs. Perforated metal, also known as perforated sheet, perforated plate, or perforated screen, is sheet metal that has been manually or mechanically stamped or punched to create a pattern of holes, slots, or decorative shapes.

Expanded Metal

perforated metal sheets

Perforated metal has many many uses such as:-

  • Aerospace:  Nacelles, Fuel filters, Air filters
  • Appliances: Dish washer strainers, Microwave screens, Dryer and Washer drums, Cylinders for gas burners, Water heaters and Heat pumps, Flame arrestors
  • Architectural: Stairs, Ceilings, Walls, Floors, Shades, Decorative, Sound absorption
  • Audio Equipment: Speaker grills
  • Automotive: Fuel filters, Speakers, Diffusers, Muffler guards, Protective radiator grills
  • Food Processing: Trays, Pans, Strainers, Extruders, Sifters
  • Furniture: Benches, Chairs, Shelves
  • Filtration: Filter screens, Filter tubes, Strainers for air, gas, and fluids, Dewatering filters,  Screens for sizing and separating
  • Enclosures: Noise reduction, Grilles, Diffusers, Ventilation
  • Industrial equipment: Conveyors, Dryers, Heat dispersion, Guards, Diffusers, EMI/RFI protection
  • Lighting: Fixtures
  • Medical: Trays, Pans, Cabinets, Racks
  • Pollution control: Filters, Separators
  • Power generation: Intake and Exhaust manifold silencers
  • Mining: Screens
  • Retail: Displays, Shelving
  • Security: Screens, Walls, Doors, Ceilings, Guards
  • Ships: filters, guards
  • Sugar processing: Centrifuge screens, Mud filter screens, Backing screens, Filter leaves, Screens for dewatering and desanding, Diffuser drainage plates
All Sheets are 2000mm x 1000mm
Hole Dia
(R) mm
Pitch
(T) mm
Open
Area %
Sheet Thickness in mm
0.50 0.75 1.00 1.25 1.50 2.00 3.00
1.50 2.50 32.70
2.00 3.50 29.60 •   •
3.00 5.00 32.70 •   • •   •
3.00 6.00 22.70
4.00 6.00 40.30
5.00 7.00 46.30
6.00 9.00 40.30 •   • •   •
8.00 12.00 40.30 •   •
10.00 15.00 40.30 •   • •   •
12.00 16.00 51.00

Expanded metal

Our versatile range of expanded metal is available in mild steel, stainless steel, aluminium, zintec, titanium and nickel alloys – with your choice of coating or finish. Expanded metal sheets can be cut to size and are available in various coil thicknesses, in either raised or flattened mesh. Various tolerances are also available, and all deliveries are packed according to customer requirements.

Order requirements:

Includes:

  • Reference number or mesh specification
  • Raised or flattened mesh
  • Mesh orientation (see illustration)
  • Panel size
  • Tolerances
  • Material type
  • Quantity required
  • Coating or finish
  • Packing requirements

Formation of one type of expanded metal

Some commonly used shapes are circles, squares, and diamonds; diamonds are the most popular shapes because of how well the shape absorbs energy and resists mechanical deformation after installation. Other design considerations are the size and angles of the shapes, which will also affect how well the metal absorbs energy and where the energy is spread throughout the expanded metal.

For the diamond shape, there are at least four different angles that come into account, the two acute and two obtuse angles. The larger the angles, the less strength the shape will have because there would be too much space inside the shape. However, if the angles are too small, strength is lost because the shape is too close together, so there is no space for the structure to hold.

The angle in which the shapes are laid also plays a significant role. If the angle is zero the ends of the shape point to the start and the end of the sheet, making straight lines across the sheet of diamonds. This option provide the most strength when it comes to compressing the sheet on its side. This can even take more pressure than a solid piece of metal because the sheet will compress and spread the pressure throughout the sheet. The other four commonly used angles are 60˚, 90˚, 90˚ plus 60˚, and 60˚ plus 90˚. A 60˚ angle puts the diamond diagonal at the start and end to the sheet. A 90˚ angle makes the diamond vertical to the start and the end of a sheet. The 90˚ plus 60˚ and 60˚ plus 90˚ angles combine both a 60˚ angle and a 90˚ angle; the order of the angles is respective to the order in naming.

Expanded Metal Diagrams

Expanded metal can be used for a walkway grating that is self-draining and non-slip

Expanded metal is frequently used to make fences, walkways, and grates, as the material is very durable and strong, unlike lighter and less expensive wire mesh. The many small openings in the material allow flow through of air, water, and light, while still providing a mechanical barrier to larger objects. Another advantage to using expanded metal as opposed to plain sheet metal is that the exposed edges of the expanded metal provide more traction, which has led to its use in catwalks or drainage covers.

Large quantities of expanded metal are used by the construction industry as metal lath to support materials such as plaster  in walls and other structures.

Expanded metal is also used by artists, especially sculptors, who use the material to form complex 3-dimensional surfaces and compound curves which can then be covered with plaster, clay, or other materials.

WHAT OUR CLIENTS SAY ABOUT US

H4 Medical Ltd have been working closely with Multimesh UK for the past two years. Multimesh make most types of medical baskets, trolleys and other mesh products, whilst also making them to our customer’s specific requirements. The staff are friendly, helpful and succeed in providing a quality service to us. Their flexibility on deliveries and collections is just one example of how they go above and beyond to provide this level of service. H4 Medical Ltd look forward to a long and fruitful partnership with Multimesh UK
Mark Harris, Managing Director H4 Medical Ltd