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Oil & gas · Plant structures

Column Platforms & Ladders

The access steel round a distillation column or tall vessel: curved platforms on brackets, rolled handrails, caged ladders between levels and a davit at the top.

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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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Access round a column

Platforms at each manway and instrument level, joined by caged ladders. Levels and arcs follow the vessel drawings; this model shows four.

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

02 / 08

Brackets on the vessel clips

Knee brackets that bolt to clips the vessel maker welds on. We work to their clip drawing so every hole lines up.

How is it possible at Allmarc?
HSG 12 kW fibre laser in the Allmarc works

Used here for: Brackets on the vessel clips

  • 12 kW
  • Cuts up to 40 mm
  • 2,500 x 8,000 mm bed
All our machinery

Used here for: Brackets on the vessel clips

  • CNC plate drilling
All our machinery

03 / 08

Curved platforms

Grating platforms cut to the shell radius, in segments small enough to lift into place.

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Rolled handrails

Handrails and toe plates bent to follow each platform’s curve.

How is it possible at Allmarc?
CNC pipe bending in the Allmarc works

Used here for: Rolled handrails

  • CNC pipe and tube bending
All our machinery
Three-roll pinch cum pyramid plate rolls in the Allmarc works

Used here for: Rolled handrails

  • Rolls plate up to 40 mm
All our machinery

05 / 08

Caged ladders

Ladders staggered between platforms, with cages from 2.3 m up.

06 / 08

Davit

A davit at the top for lifting trays and internals.

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Supports up the column

Pipe clips and supports up the column. The column itself is the client’s.

08 / 08

A kit of parts

Brackets, platforms, rails, ladders and davit: 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.

Send us a drawing