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Tower Crane Mast & Jib Sections

Lattice mast and jib sections for tower cranes: chords, lacing and bored connections, made so any section fits any other, to the crane maker’s drawings and weld procedures.

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Allmarc 3D model · to scale
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How it is built.

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Sections that stack true

A tower crane climbs on identical mast sections. Each one has to fit every other, every time. Crane steel is built strictly to the maker’s drawings and weld procedures.

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Chords

Chords cut to length and end-milled square.

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

Used here for: Chords

  • Beams up to 1,000 x 500 mm
  • 12 m long, 50 mm thick
  • Hypertherm XPR 300
All our machinery
SKDX1030 CNC end-face milling in the Allmarc works

Used here for: Chords

  • Mills beam and column ends square for bolted splices
All our machinery

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Lacing

Tube lacing coped on the tube laser and welded by robot in a fixture.

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

Used here for: Lacing

  • 4 kW
  • Tubes and sections up to 250 dia
  • Automatic loading
All our machinery
ABB robotic MIG welding cells in the Allmarc works

Used here for: Lacing

  • Three-phase robotic MIG
  • Automatic special-purpose welding machines
All our machinery

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Connections

Fish plates and pin blocks bored in one set-up, so sections interchange.

How is it possible at Allmarc?

Used here for: Connections

  • CNC plate drilling
All our machinery

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Jib sections

Triangular jib sections, jig welded.

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Every part, apart

Chords, lacing, connections and jib.

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
Heavy or delicate
  • 600 T flare chambers and 1 to 2 mm sheet metal, under one roof.
  • Each job goes to the plant built for it.
Repeat parts, identical
  • Fixtures, robots and CNC lines, so the hundredth matches the first.
  • Machined after welding where it matters.
Proven before it ships
  • Trial-assembled in the works.
  • Inspected and documented at every stage.
Scale
  • 4 plants at Kanbha; about 6,000 T a month from November 2026.
  • ISO 9001, ISO 45001, EN 1090, EN ISO 3834-3; RDSO approved.
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