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Oil & gas · Skids & base frames

Wellhead Bases & Control Frames

The structural steel at the well: a base that carries the wellhead and the steel around it, and a frame for the control panel, cable tray and instruments beside it. Fabricated to the operator’s drawings.

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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 / 07

At the wellhead

A base frame with a gusseted ring round the wellhead, and a separate portal frame for control equipment. Layout follows the operator’s drawings; the model is one example.

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

02 / 07

Base and deck

A welded base with a sealed deck, sized to the well-pad layout.

How is it possible at Allmarc?
Robotic H-beam cutting and bevelling cell in the Allmarc works

Used here for: Base and deck

  • Beams up to 1,000 x 500 mm
  • 12 m long, 50 mm thick
  • Hypertherm XPR 300
All our machinery
HSG 12 kW fibre laser in the Allmarc works

Used here for: Base and deck

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

03 / 07

Ring and gussets

A rolled centre ring with radial gussets, cut on the laser and welded to hold the wellhead square to the base.

How is it possible at Allmarc?
Three-roll pinch cum pyramid plate rolls in the Allmarc works

Used here for: Ring and gussets

  • Rolls plate up to 40 mm
All our machinery

Used here for: Ring and gussets

In 2024 we were the only buyer of Deratech’s 20 kW, 12 m laser.

  • 20 kW
  • 12 x 3 m bed
  • Pallet changer
All our machinery
Manual MIG welding in the Allmarc works

Used here for: Ring and gussets

  • Qualified welders, including 6G
All our machinery

04 / 07

Control frame

A hollow-section portal carrying the control panel and cable tray, drilled to take the client’s equipment.

How is it possible at Allmarc?
HSG CNC tube laser in the Allmarc works

Used here for: Control frame

  • 4 kW
  • Tubes and sections up to 250 dia
  • Automatic loading
All our machinery

Used here for: Control frame

  • CNC plate drilling
All our machinery

05 / 07

Grating, panel and tray

Anti-slip grating and the fittings round the frame, made in our own light-fabrication facility.

How is it possible at Allmarc?
Grip-Strut walkway automation line in the Allmarc works

Used here for: Grating, panel and tray

  • Punching, embossing, edge bending, shearing
  • Single-piece planks up to 8 m
All our machinery
Deratech 8 m tandem press brake in the Allmarc works

Used here for: Grating, panel and tray

  • 8 m bending length
  • Tandem technology
All our machinery

06 / 07

Piping, supports and lifting

Spools and supports to the operator’s layout, and padeyes so the base lifts in one piece.

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

Used here for: Piping, supports and lifting

  • CNC pipe and tube bending
All our machinery
Blasting and painting booths in the Allmarc works

Used here for: Piping, supports and lifting

A Level 2 coating inspector on the floor full time; weather checked and a test before every batch of paint.

  • Dust collection
  • 15 m paint booth for long sections
  • Sa 2.5 blasting
All our machinery

07 / 07

Every piece, apart

Base, deck, pedestals, supports, piping and fittings: each one is a separate, numbered item on the drawing register and in the packing list.

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
Precision, not just tonnage
  • Small-bore piping and dense fit-up, welded by qualified welders, including 6G.
  • Fit-up checked before every weld.
Flat and square
  • Frames welded to a set sequence and checked for flatness.
  • Pedestals machined after welding.
One package
  • Frame, deck, piping, access and fittings built together.
  • Set on site in a single lift.
Finished before dispatch
  • Blast, prime and paint in house.
  • Export packing we designed ourselves.
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