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Aquaculture
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Aquaculture — integrated EPC from tank to pipe system

SIGRA delivers complete infrastructure for land-based and floating aquaculture under one roof — GRP tanks from Herde Kompositt, PE and GRE pipe systems from Odda Plast, and steel structures from KB Stålindustri.

4 disciplines
Under one contract: GRP tanks, GRE pipes, PE pipe systems and tank solutions — delivered and coordinated by SIGRA
50 years
Service life of GRP, PE and GRE: Longer service life and lower maintenance cost compared with traditional materials
Fast
Engineering response: From enquiry to technical feedback
SIGRA's position

The aquaculture problem solver

Aquaculture customers building or upgrading land-based RAS facilities usually need GRP tanks, pipe systems and steel structures from three different suppliers. SIGRA brings all disciplines together under one contract.

Herde Kompositt prefabricates GRP tanks in its own production halls — so groundwork and fabrication can run in parallel, reducing total project time. Odda Plast prefabricates PE pipes on its own premises, with shorter lead times than imported alternatives. KB Stålindustri delivers steel structures from Karmøy.

Tradespeople assembling a steel ring on the welding table in the workshop
Services

What we deliver to aquaculture

Build — Herde Kompositt

GRP tanks and containers

Aquaculture tanks, smolt tanks, halibut silos and process water tanks. Vacuum-cast in our own production halls — groundwork and fabrication can run in parallel for shorter total project time.

Build — Odda Plast

PE/GRE pipe systems for RAS

A problem solver for special products on request — prefabrication of PE and GRE pipe systems gives shorter lead times and better quality control. Complete systems from design through installation.

Build — KB Stålindustri

Steel structures and walkways

Support structures, walkways, platforms and steel piping. For land-based facilities and floating aquaculture installations. EN 1090-EXC2 certified.

Extend — Pipeliner

Rehabilitation of existing RAS facilities

Pipeliner lines existing pipe systems in older RAS facilities without full replacement. Also handles maintenance and rehabilitation of GRP tanks and containers — regardless of who originally supplied the facility.

Build — Odda Plast

Pre-engineering and design

Early-stage engineering for material selection, sizing and system design. Odda Plast contributes from concept study through to completed installation with full documentation.

Extend — Framework agreement

Ongoing service and maintenance

Framework agreement for ongoing follow-up of GRP tanks, pipe systems and steel structures throughout the facility's service life. Agreed response times. Fixed pricing structure.

Our responsibility

On fish health's terms

For us, aquaculture is about more than production. Material choices, pipe systems and structures must safeguard fish health and the environment throughout the facility's service life.
Corrosion-free materials
Clean pipes and tanks that safeguard water quality and fish welfare.
Long service life, less waste
GRP and GRE last for decades and reduce the need for replacement.
Rehabilitation over replacement
No Dig and internal lining mean less disruption to operations and the environment.
How we work

Do you have an older RAS facility that needs an upgrade?

Pipeliner rehabilitates pipe systems and GRP tanks internally without full replacement — regardless of who originally supplied the facility. Framework agreement available for ongoing follow-up throughout the facility's service life.

01
Internal lining
Internal lining of existing PE and GRE pipe systems — without full replacement.
02
GRP tanks without replacement
Rehabilitation of GRP tanks and containers without replacement. LIDAR/3D condition mapping of pipe networks.
03
Framework agreement
Framework agreement for ongoing maintenance throughout the facility's service life. No supplier lock-in.
Close-up of the same ring assembly in the workshop
References

Documented deliveries — aquaculture

Egget ® for OvumPhoto: Audun Dahl
Closed composite cage · Herde Kompositt

Egget ® for Ovum

Closed aquaculture cage in composite, engineered by Ovum and manufactured by Herde Kompositt. Large volumes with low weight and long service life — from production planning and fabrication to marine transport.

2,000 m³
Volume, closed cage
21 m
Height
Tytlandsvik Aqua
Land-based aquaculture · Odda Plast

Tytlandsvik Aqua

Complete PE pipe system delivered to Tytlandsvik Aqua's land-based aquaculture facility. Large-diameter PE pipe systems — design, fabrication and installation.

PE
Large diameters
Complete
Design → installation
Proximar Seafood — Japan
Trenchless repair · Pipeliner

Proximar Seafood — Japan

Repair of buried pipes beneath the tanks at a land-based aquaculture facility outside Tokyo — carried out using trenchless methods (No Dig), with no excavation.

No Dig
Trenchless relining
0
Excavation required
Sludge tank, 220 m³
Tank and fabrication · Odda Plast

Sludge tank, 220 m³

220 m³ welded PE sludge tank delivered to an aquaculture facility — designed, fabricated and shipped by sea to the site.

220 m³
Welded PE sludge tank
Sea transport
Towed to the facility
Structures for aquaculture
Steel and aluminium · KB Stålindustri

Structures for aquaculture

KB designs, fabricates and delivers complete steel and aluminium structures: forecastles and davit arms for feed barges, platforms, containers and thermolicer facilities.

~60
Thermolicers produced
Steel + aluminium
Design → installation
Companies involved

Four companies. One integrated delivery.

No interface issues between suppliers. SIGRA coordinates all four disciplines, manages the interfaces and issues a single consolidated invoice — regardless of project scope.

Contact

Planning a new build or upgrade of an aquaculture facility?

We offer a site visit and technical review — and present an integrated solution for tanks, pipe systems and steel under a single contract.

GRP tanks and composite
Audun Dahl — Herde Kompositt
PE/GRE pipe systems
Leif Gunnar Opedal — Odda Plast
Book a meeting
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