Dredge Pipeline Pontoons

Floating dredge pipeline in units: a flanged pipe length carried in saddles on two welded steel floats, with a walkway and lifting lugs. Fabricated to your pipe size and float arrangement.

Explore the 3D model Send us a drawing

Allmarc 3D model · to scale

Built to your size

Pipe bore, unit length and float size follow your pipeline.

We have not delivered this product yet. We are equipped to build it: a 30 m bay with 11.5 m under the hook, plate rolling to 40 mm and welding to EN ISO 3834-3. The model shows a typical arrangement.

To your drawing: made
12 m: unit shown
Wear-resistant steel: pipe
Flanged: joints

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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A pipeline that floats

A dredger pumps its spoil ashore through a floating pipeline, built up from units like this one. Each unit is a length of pipe on its own floats.

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

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Discharge pipe

The pipe is rolled from wear-resistant plate and welded seam by seam.

How is it possible at Allmarc?

Three-roll pinch cum pyramid plate rolls in the Allmarc works

Used here for: Discharge pipe

Rolls plate up to 40 mm

All our machinery

Used here for: Discharge pipe

Full-penetration welds on built-up sections

All our machinery

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Flanges

A flange at each end, drilled to your pattern, bolts to the next unit or to a ball joint.

How is it possible at Allmarc?

Used here for: Flanges

CNC plate drilling

All our machinery

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Floats

Two welded steel floats with ring stiffeners and conical ends carry the pipe. Each is pressure-tested for leaks.

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Saddle frames

Frames across both floats carry the pipe in saddles and clamp it down.

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Walkway and lugs

A grated walkway along the pipe for inspection, and lugs for lifting the unit in and out of the water.

How is it possible at Allmarc?

Grip-Strut walkway automation line in the Allmarc works

Used here for: Walkway and lugs

Punching, embossing, edge bending, shearing
Single-piece planks up to 8 m

All our machinery

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Made to your drawing

Send the general arrangement or a sketch with sizes and loads. We detail it, fabricate it, trial-assemble it in our bay and pack it for sea. The model is a typical arrangement, not a delivered project.

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