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Oil & gas · Upstream & offshore

Air Intake Ducts

Air intake systems for gas turbines: the filter house, weather hoods, transition, silencer casing, duct elbow and expansion joint, with the support structure and filter-change platform.

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Allmarc 3D model · to scale
Explore the model

How it is built.

Scroll: the camera moves to each part in turn and ends on the exploded view. Drag to turn it round yourself.

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01 / 08

Air into a turbine

Air is filtered, silenced and turned down into the turbine inlet. The turbine and inlet plenum are the client’s.

Scroll to see how it is built · drag to turn it round

02 / 08

Filter house

A panelled box with stiffeners and weather hoods over the filter face.

How is it possible at Allmarc?
Deratech 6 kW fibre laser in the Allmarc works

Used here for: Filter house

  • 6 kW
  • Cuts up to 20 mm
  • 2,500 x 6,300 mm bed
All our machinery
Deratech 8 m tandem press brake in the Allmarc works

Used here for: Filter house

  • 8 m bending length
  • Tandem technology
All our machinery

03 / 08

Transition

A tapered duct from the filter house to the silencer, cut from flat patterns.

How is it possible at Allmarc?
Messer MultiTherm PRO CNC plasma in the Allmarc works

Used here for: Transition

  • Hypertherm XPR 460, first in India
  • 5 oxy-fuel torches
  • 4 x 35 m bed
All our machinery

04 / 08

Silencer

The silencer casing and its stiffening frames.

05 / 08

Elbow

The duct elbow down to the turbine and its expansion joint.

06 / 08

Structure and access

The braced structure under the house, and a platform and ladder for changing filters.

How is it possible at Allmarc?
Kotec newRun10DX CNC beam drilling line in the Allmarc works

Used here for: Structure and access

Heavy profiles that need precise holes, where plasma cannot do the job: the lower structure and panel borders of a ground flare, and every bolted PEB and multi-storey frame.

  • H-beams up to 1,000 x 500 mm
  • Drills 3 faces in one pass
  • Channels, angles and box sections
All our machinery

07 / 08

The turbine

Shown for context.

08 / 08

A kit of parts

House, transition, silencer and elbow: every member numbered, match-marked and packed in erection sequence.

Why Allmarc

Experience you can trust.

We fabricate to your drawings and prove the fit in our own bay before anything ships. Open any line for the detail.

Talk to an engineer
Structural steel at scale
  • 4 plants at Kanbha; about 6,000 T a month from November 2026.
  • Plate, sections and built-up members in house.
Trial-assembled
  • Fit-up proven in the works.
  • Match-marked for bolt-up on site.
Finished before dispatch
  • Blast, prime and paint in house; galvanised finishes on request.
  • Access steel fitted in the works.
Packed for the journey
  • Export packing we designed ourselves.
  • Shipped as numbered kits.
Start a project

Have a drawing? Let us build it.

We fabricate to your design, from plate to a packed container. An engineer will tell you honestly how we would build it.

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