Halvorsen

What Halvorsen does

Halvorsen, operating under the legal entity Tratec Halvorsen AS, is a Norwegian pressure-technology manufacturer founded in 1842 and headquartered at Øyesletta in Kvinesdal. The company designs, fabricates, and services pressure vessels, boilers, heat exchangers, waste heat recovery units (WHRU), and water treatment systems for the offshore oil & gas sector and the broader process and energy industry. Technical capabilities span diameters from 200 to 5,000 mm, lengths up to 20 metres, design pressures from 4 to 400 bar, and corrosion-resistant materials including Duplex, Super Duplex, and 6Mo stainless steels, supported by a robotized welding station installed in 2025 and ISO 9001/14001/45001/3834-2 certifications.

The company operates a full EPCIC delivery model — engineering, procurement, construction, installation, commissioning and maintenance — either directly to operators such as Equinor, Aker BP, ConocoPhillips, and Vår Energi, or as a subcontractor within alliances such as the Aker BP-led Fixed Facilities Alliance for the Yggdrasil development alongside Aker Solutions and Siemens Energy. Product offerings extend beyond new-build pressure equipment into aftermarket services including inspection, refurbishment, exhaust-system upgrades, and chemical-free mobile water treatment modules co-developed with Veolia Water Technologies. Notable recent deliveries include the company's largest-ever 6Mo tank (58 tonnes, ~20 metres) for the Hugin A platform and a two-year exhaust-duct and pressure-vessel upgrade on the Jotun FPSO.

Halvorsen generates revenue through project-based hardware sales and professional services on long-cycle offshore contracts, with a single-workshop footprint of approximately 54-60 employees. There are no recurring subscription or licensing revenue streams, no disclosed pricing, and no public financials; the company is privately held under the Tratec ownership umbrella and serves customers primarily on the Norwegian continental shelf.

Name

Halvorsen

Legal name

Tratec Halvorsen AS

Website

https://halvorsen.no

Company type

Private

Founded year

1842

Operating status

Operating

Headcount range

101–250 employees

Short description

Halvorsen (Tratec Halvorsen AS) is a 1842-founded Norwegian manufacturer of pressure vessels, boilers, waste heat recovery units, and water treatment systems, serving offshore oil & gas operators and industrial process customers on the Norwegian continental shelf through direct EPCIC project delivery.

Ownership category

akta.pro rank

Product category

Pressure Vessel & Boiler Manufacturing

NAICS

Oil and Gas Field Machinery and Equipment Manufacturing (333132), Ventilation, Heating, Air-Conditioning, and Commercial Refrigeration Equipment Manufacturing (33341)

SIC

Oil & Gas Field Machinery & Equipment (3533), Special Industry Machinery (No Metalworking Machinery) (3550)

akta.pro primary industry

Life-Saving Appliances & Safety Equipment (Davit Systems, Lifeboats, Firefighting) (IMAJAIAG)

akta.pro secondary industry

Ballast Water, Bilge & Wastewater Treatment Systems (Environmental/Utility) (IMAJAIAJ)

Keywords

• Pressure vessel manufacturing
• Offshore boilers
• Waste heat recovery
• Water treatment systems
• EPCIC services

Headquarters

HQ city

Öyestranda

HQ country

Norway

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Personnel, Supply Chain, Operations, Technology or R&D, Marketing or Sales, Infrastructure

Revenue model

1. Equipment Manufacturing and Sales: Manufacturing and sale of pressure vessels, boilers, tanks, heat exchangers, and custom steel structures for offshore and industrial applications. Revenue is project-based with significant contract values (e.g., Yggdrasil project over 100 million NOK).
2. EPCIC Project Services: Total supplier services covering engineering, procurement, construction, installation, commissioning and maintenance. Follows products from development through entire lifecycle.
3. Aftermarket Services: Inspection, technical assessments, upgrades, modifications, repairs, and documentation services. Includes boiler repair, pressure vessel refurbishment, exhaust system upgrades, and water treatment services.
4. Water Treatment Systems: Complete water treatment equipment and chemical supplies for boiler and energy systems, both offshore and onshore installations.

Go-to-market motion1 record

Distribution channels3 records

Marketing channels4 records

Core offering

Halvorsen is a total supplier of pressure technology for offshore and process industries, designing and manufacturing custom pressure vessels, boilers, tanks, heat exchangers, and waste heat recovery units (WHRU), along with water treatment systems. The company delivers complete EPCIC projects (Engineering, Procurement, Construction, Installation, Commissioning and Maintenance) and aftermarket MMO services for offshore oil & gas installations and industrial process facilities on the Norwegian continental shelf.

Product overview

Halvorsen is a total supplier of pressure technology for offshore and process industry, offering a comprehensive portfolio of products and services. The core product portfolio includes pressure vessels, tanks, heat exchangers, electric boilers, WHRU systems, and specialized equipment like pig launchers/receivers, coalescers, and separators. Products span multiple categories: Oil & Gas (offshore pressure vessels, atmospheric tanks, WHRU, separators, KO drums), Industry (tanks, heat exchangers, electric boilers, hyperbaric testing systems), and Aftermarket (repair, refurbishment, upgrades, water treatment). The company also delivers complete EPCIC projects from development through commissioning and maintenance. Recent additions include a new robotic welding station (2025) for improved efficiency and the first mobile container-based water production facility (2019).

Differentiator

Problem solved

Functional benefit

Products and services

• Offshore Pressure Vessels Custom pressure-bearing steel structures for offshore process and auxiliary systems, used as receiving, buffer, expansion, and storage tanks with reliable operation and high mechanical integrity. Targeted at oil & gas operators on the Norwegian continental shelf.
• Tanks and Pressure Vessels (Industry) Customer-specific pressure vessels and tanks for steam, heating, and process plants within industry and energy systems, including mate water tanks, energy accumulators, condensate tanks, steam manifolds, flushing tanks, and hyperbaric chambers. For industrial and energy sector customers.
• Heat Exchangers Robust and efficient heat exchanger solutions for demanding industrial applications, including U-tube heat exchangers, heat recovery economisers, air heaters, and bespoke heat exchangers. For industrial process and energy customers.
• Electric Steam and Hot Water Boilers Electric boilers at 400V and 690V voltage levels with outputs up to 10,000 kW for central heating plants and compact solutions up to 2,500 kW for local production. For industrial and district heating customers.
• WHRU – Waste Heat Recovery Unit In-house developed exhaust system with integrated Waste Heat Recovery Unit delivered as complete package for gas turbines and compressor units. For offshore and industrial operators seeking energy efficiency.
• Hyperbaric Pressure Testing System Complete ready-to-use facilities for testing and qualifying equipment subjected to high external pressure up to 350-400 bar, with CE marking according to PED, NORSOK and DNV standards. For equipment manufacturers and operators requiring pressure qualification.
• Bulk Handling Tank System Custom-designed pneumatic pressure vessels with conical or domed bottoms for safe and efficient handling of dry bulk materials offshore, maritime and onshore.
• Atmospheric Storage Tank Self-supporting atmospheric storage tank for safe storage of drinking water and process water, suitable for offshore and onshore installations with volumes up to approximately 250 m³.
• Expansion Tank Pressure-bearing steel structures for offshore process and utility systems, used for pressure stabilisation and volume compensation in closed systems with design pressure 4-10 bar.
• Electro-Coalescer Horizontal pressure-bearing steel tank developed as structural carrier for electrostatic separation in demanding offshore and process applications.
• Pig Launcher and Receiver Pressure-bearing steel structures for safe launching and receiving of pipeline pigs in high-pressure pipeline systems, including MPL (Multiple Pig Launcher) variants. For pipeline operators.
• Separator & Scrubber Pressure-bearing steel structures for offshore process and utility systems functioning as mechanical main structure in separation and cleaning processes.
• Oil-Air Separator Pressure vessel-based unit for efficient separation of oil from air and gas streams in industrial and energy applications.
• EX-Kjel – Electric Steam and Heating Unit Pressure-bearing electric heating and steam unit developed for offshore process and auxiliary systems in hazardous areas with steam pressure up to 12 bar.
• Knock-Out Drum (KO-Drum) Horizontal process vessel designed for efficient separation and collection of liquid and condensate from gas and steam streams to protect downstream equipment.
• Mobile Water Production Facility Container-based process module producing oxygen-free fresh water for washing salt out of oil. Chemical-free process delivering 50-70 cubic metres of water per day. Approved according to NORSOK Z-015N. Co-developed with Veolia Water Technologies.
• Boiler Repair & Refurbishment Complete services in repair, refurbishment, and life extension of steam and hot water boilers, including pipe replacement, combustion chamber repair, and pressure testing. For industrial and offshore operators.
• Exhaust Systems (Gas Turbine and Diesel Engine) Complete upgrades and life extensions of exhaust systems for gas turbines and diesel engines offshore and onshore, including INCO-FLEX expansion bellows. For offshore and industrial operators.
• Pressure Vessel Service Life Extension MMO (Maintenance, Modification & Operations) services for maintenance, modification and upgrading of existing pressure vessels in offshore and industrial environments. For operators seeking to extend asset life.
• Conversion from Oil to Gas Burner Complete solutions for converting existing oil-fired boilers to modern gas-fired systems with modulating operation and frequency-controlled motors. For industrial boiler operators.
• Water Treatment – Equipment and Chemicals Complete aftermarket concept in water treatment for boiler and energy systems, including chemicals, equipment, technical services and operational guarantees. For boiler and energy system operators.
• WHRU Upgrades and Modifications Upgrades and modifications of waste heat recovery units for gas turbines and diesel engines with focus on extending lifespan and improving operational reliability. For operators of installed WHRU systems.
• Services and System Upgrades Complete aftermarket and service solutions for boiler plants and thermal energy systems, including control and automation system upgrades. For industrial boiler plant operators.
• Cleaning and Preventive Maintenance of Process Systems Specialised solutions for cleaning and systematic preventative maintenance of pressure and temperature systems, including chemical products from Multi Solutions AS. For offshore and industrial process system operators.

Quantifiable outcome

• 60-70% time savings in multi-layer welding operations
• +3 more outcomes

Named customers8 records

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration2 records

Feature5 records

Partnerships

Four partnerships are on record, tiered core.

• Veolia Water TechnologiescoreStrategic or Co-development Partner · 1 January 2019Strategic collaboration with Veolia Water Technologies, a French global leader in water treatment solutions. Together they develop and market mobile water treatment systems for offshore applications. Halvorsen provides the container-based process modules while Veolia contributes water treatment expertise.
• Vår EnergicoreStrategic or Co-development PartnerPartnership for Jotun FPSO Lifetime Extension project. Halvorsen responsible for extending service life of all pressure-containing vessels and heat exchangers in the onboard process plant.
• Aker SolutionscoreImplementation/ SI/ Consulting PartnerClient for Yggdrasil project - Fixed Facilities Alliance with Aker BP and Siemens Energy. Halvorsen delivers process modules, tanks and skids as subcontractor.
• Siemens EnergycoreStrategic or Co-development PartnerPart of Fixed Facilities Alliance for Yggdrasil development, together with Aker BP and Aker Solutions. Siemens Energy provides power generation and energy solutions.

Scale indicators9 records

Recent moves11 records

Expansion highlights5 records

Direct peers

• Kelvion: Specialist manufacturer of heat exchangers, pressure vessels and process cooling equipment (formerly GEA Heat Exchangers). Competes with Halvorsen in industrial heat transfer and custom pressure equipment for offshore and process industries.
• Velan: Manufacturer of industrial valves, pressure vessels, and engineered products serving oil & gas, power and chemical markets. Comparable to Halvorsen in custom-engineered pressure equipment for harsh offshore and process applications.
• Aker Solutions: Norwegian offshore EPC contractor and Halvorsen's Fixed Facilities Alliance partner on Yggdrasil. Both serve NCS oil & gas operators with process modules, pressure equipment, and lifecycle services from Norwegian fabrication facilities.
• Vahterus: Finnish manufacturer of plate heat exchangers serving marine, offshore, and process industries. Comparable to Halvorsen in size, Nordic footprint, and specialization in custom heat-transfer and pressure equipment for demanding applications.

Broad incumbents

• Alfa Laval: Swedish global leader in heat exchangers, process equipment and fluid handling with strong offshore and marine exposure. Overlaps directly with Halvorsen's heat exchanger, separator, and pressure-vessel portfolio but at vastly larger scale across multiple end markets.
• National Oilwell Varco: Global oilfield equipment manufacturer producing pressure vessels, wellhead equipment, and process systems for upstream oil & gas. Overlaps with Halvorsen's oil & gas pressure equipment business but at much larger scale and broader portfolio.
• TechnipFMC: Global offshore engineering, subsea and surface equipment company serving NCS and international oil & gas operators. Competes with Halvorsen on integrated project scope but at a vastly larger scale with proprietary subsea technologies.
• Wärtsilä: Finnish marine and energy technology OEM whose engine and exhaust-system installations overlap with Halvorsen's exhaust duct, boiler, and heat-recovery work for offshore platforms. Comparable Nordic industrial heritage and offshore customer base.
• Siemens Energy: Global energy technology OEM and Fixed Facilities Alliance partner on Yggdrasil alongside Halvorsen. Provides gas turbines, compressors, and power solutions whose exhaust systems and auxiliary equipment Halvorsen fabricates, making them a complementary rather than direct competitor.
• Bilfinger: European industrial services provider with pressure-vessel fabrication, modification, and lifetime-extension capabilities for oil & gas, chemical and power customers. Directly comparable to Halvorsen's MMO services and pressure-equipment manufacturing businesses.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

Compliance6 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles9 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Halvorsen