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Wedge wire fabrication

Wedge wire fabrication at SIMO Screens adds frames, flanges, end rings, screen housings, rolled and curved sections, brackets and segmented decks to our own screens, so that each assembly is supplied ready to install. The same capability produces drainage grates, pool grates, rainwater filters, Coanda screens, fish screens, architectural panels and walkway panels.

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Flat wedge wire screen panels ready for fabrication

Fabrication on our own screens

A wedge wire screen must be held, sealed, connected and supported within the equipment it serves. SIMO Screens fabricates these parts on its own screens, so that the screen and every fabricated part are built to one drawing by one team and fit-up problems are resolved before dispatch rather than on site.

Wedge wire fabrication scope

FabricationFunctionTypical use
FramesHold flat panels square and provide a seating edgeDecks, false bottoms, grates, walkway panels
FlangesConnect a screen to a pipeline or vessel nozzleOutlet baskets, resin traps, laterals
End ringsClose and stiffen the ends of a cylinderScreen tubes, candle elements, baskets
Screen housingsEnclose a screen element with inlet and outletRainwater filters, inline strainers
Rolled and curved sectionsForm panels to a radiusSieve bends, drum screens, curved facades
BracketsFix screens to walls, frames and structuresIntake screens, architectural panels
Segmented decksDivide large areas into pieces that bolt togetherSupport grids, lauter tun false bottoms

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Design principles

Material. Frames and fittings are normally fabricated in the same alloy as the screen. On a stainless steel wedge wire screen this avoids galvanic couples and keeps corrosion behaviour uniform across the assembly, while other frame materials can be discussed where conditions allow.

Fit. Flanges and end rings are drilled to the buyer's standard or drawing. The approved drawing shows the screen and every fabricated part together, with the opening, nozzle or seat the assembly fits.

Load and stiffness. For grates, walkway panels and support grids, frames and support rods are sized together for span and deflection, with FEA used where the load case requires it. Drainage grate load class is confirmed per order against the buyer's specification and country.

Segmenting. Large panels and baskets are divided so that each piece passes a manway or suits handling, and the joints are detailed to maintain slot and seal across them.

Fabricated products

  • Drainage grates and trench covers for commercial kitchens, food plants, hospitals and car parks, with 3 mm and 5 mm slots running along the length in kitchen service
  • Pool, shower and balcony grates in brushed or electropolished finish, with Duplex 2205 recommended and SS 316 as the budget option
  • Rooftop rainwater harvesting filters with complete stainless steel housings in SS 304 or SS 316L, and MS or SS 410 to client requirement, sized by flow rate and pipe size
  • Coanda screens for Tyrolean and side intakes, stormwater and rainwater
  • Fish and aquaculture screens for hatcheries, raceways and intakes
  • Architectural panels for facades, sunscreens, ceilings and balustrades, rolled with the wires around the curve
  • Flooring and walkway panels for walkways, mezzanines and drying floors, with a dimpled anti-skid finish available
Wedge wire support grid and false bottom
Wedge wire support grid and false bottom

Process screens with fabrication

Most process screens leave the works with their fabricated parts fitted:

  • Outlet baskets and resin traps with flanges to the customer's standard
  • Header and lateral assemblies with hubs, headers and couplings
  • Support grids with beams, clamps and segment joints
  • Centrifuge baskets with rings and mounting faces to suit the machine
  • Sieve bends with frames, and feed boxes and housings as an option

Services through approved agencies

Chrome plating of pressure screen baskets, dynamic balancing of centrifuge baskets, and pickling, passivation and electropolishing are arranged on request through approved agencies. Coal centrifuge baskets are usually balanced by the user.

Enquiries

An enquiry should state what the assembly must fit, carry and connect to, with a drawing, a dimensioned sketch or a photograph of the present part. The engineering method is described under custom engineering.

Custom engineering

Engineered to your specification, drawing or sample

Share the process conditions, a drawing or a photo of the screen to be replaced. Our engineers check slot, open area and strength with CFD and FEA where it matters, send a drawing for your approval, then build and dispatch with a Mill Test Certificate.

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Six steps from enquiry to dispatch: send details, engineering review, CFD and FEA, drawing approval, manufacture, dispatch with Mill Test Certificate

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  1. Share the requirement, a drawing or a photo of the existing screen.
  2. Engineering review of slot, open area, profile wire and support rod.
  3. CFD and FEA where the design calls for them.
  4. Drawing approval by you before anything is cut.
  5. Manufacture at our works in Nagpur.
  6. Dispatch with a Mill Test Certificate.

Questions

Common questions

Do you supply screens with flanges fitted?

Yes. Flanges, end rings and couplings are fabricated onto cylinders and baskets, drilled to the standard or drawing you specify.

Can you make a frame to fit an existing opening?

Yes. Send the opening size, the depth available, the seating or fixing arrangement and the load the frame must carry. A drawing is issued for your approval before manufacture.

Are screen housings and frames made in the same material as the screen?

Normally yes, so that the assembly is in one alloy with no galvanic couples. Other frame materials can be discussed where the operating conditions allow.

Can a large stainless steel wedge wire screen be split into sections?

Yes. Large decks, grids and baskets are segmented so that each piece passes a manway or suits handling, and are then bolted or clamped together on site.

Do you supply complete housings and machines?

On request. Basket strainer housings, resin trap housings in carbon steel or lined construction, sieve bend feed boxes and complete rotary drum screens can be supplied, with bought-out parts under SIMO quality control.

Send us your specification

Our engineers will connect with you within a working day. Fill in what you know; "Not sure" is a fine answer. Fields marked are needed.

What you need
Medium, flow, temperature, pressure, or what goes wrong with the current screen.
Attach a drawing or photo PDF, DWG, DXF, STEP, JPG or PNG, up to 20 MB each.
How we reach you

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Or email sales@simoscreens.com