West Welding designs and manufactures industrial pressure vessels and pressure tanks for demanding applications in the process and energy industries. All solutions are tailored to customer-specific requirements, whether the need is for high-pressure storage or complex process equipment.

We have strong expertise in storage tanks and related structures used in demanding pressure equipment environments. Our work is carried out in accordance with applicable quality, safety, and regulatory requirements defined by operating pressure and stored media.

Our scope covers the entire lifecycle from pressure vessel design and engineering to manufacturing and installation, ensuring reliable performance in modern industrial environments.

What is a Pressure Vessel?

A pressure vessel is a container designed to hold gases or liquids at a pressure significantly different from ambient pressure. In industrial applications, pressure vessels are used for storing, processing and handling pressurised media as part of larger process systems.

Industrial pressure vessels are engineered to withstand high pressure, temperature variations and demanding operating conditions. All vessels are designed and manufactured in accordance with applicable standards and the Pressure Equipment Directive (PED), ensuring safe and reliable operation in critical processes.

Pressurised storage tanks

Pressurised storage tanks are intended for the storage of liquids or gaseous substances.

West Welding delivers customized pressurised tanks that are suitable for storing many kinds of substances. We pay special attention to the design and manufacture of corrosion-resistant vessels for the storage of dangerous substances.

  • Carbon dioxide storage tanks
  • Hydrogen storage tanks
  • Ammonia storage tanks
  • Methane storage tanks

Storage tanks can be designed to any operating pressure starting from no pressure. The maximum operating pressures of the tanks West Welding has designed, have been 300 bars. In terms of weight, we can manufacture storage tanks up to 320 tons. Read more about our maximum capacities in manufacturing.

We also deliver cryogenic pressurised vessels suitable for extremely low operating temperatures. More information is available on the Cryogenic pressure vessels and equipment page.

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Industrial Pressure Vessels for Process and Energy Industries

In industrial processes, pressure vessels are used to store, process and control liquids and gases under pressure as part of larger process systems. West Welding delivers pressure vessels and related process equipment for demanding environments where safety, durability and compliance are critical.

Typical industries include:

  • Chemical processing
  • Energy production
  • Mining
  • Pulp and paper
  • Refining
  • Maritime applications

The equipment is designed to operate under high pressures and temperatures while meeting demanding requirements for material durability and long-term reliability.

Custom Pressure Vessels and Pressure Tanks

 

All pressure vessels and pressure tanks delivered by West Welding are fully customized. Instead of offering standard catalogue products, each unit is designed based on the specific process, operating conditions and material requirements of the project.

Our pressure equipment solutions include:

  • Pressurised storage tanks
  • Process vessels
  • Columns
  • Reactors
  • Hydraulic accumulators
  • Heat exchangers
  • Cryogenic vessels and equipment
  • Flue gas cleaning systems
  • Large ducts and special piping
  • Autoclaves
  • Special projects

Pressure equipment is manufactured for a wide range of substances, including carbon dioxide, hydrogen, ammonia and methane, as well as other commonly used media.

West Welding has delivered pressure vessels operating at pressures of up to 400 bar, with hydrostatic test pressures approaching 600 bar. Pressure vessels can be manufactured with weights of up to approximately 400 tonnes, enabling use in large-scale industrial applications. These deliveries demonstrate our capability to execute highly demanding pressure vessel projects.

 

From Design to Delivery

West Welding provides a complete delivery model that covers all phases of a pressure vessel project. Demanding pressure equipment design, engineering and manufacturing are closely integrated, which improves efficiency and ensures consistent quality throughout the process.

The delivery typically includes design and engineering, fabrication, transport and installation. This approach allows customers to rely on a single partner from the early design phase to final delivery.

Strong Material Expertise and Manufacturing Capability

 

West Welding specialises in the manufacturing of large and technically demanding pressure vessels and pressure equipment. The company has extensive experience working with advanced materials and thick-walled structures, ensuring durability and long service life in harsh operating conditions.

Materials for Demanding Pressure Equipment

Solutions are designed to withstand corrosion, high pressures and temperature fluctuations in demanding industrial and process applications.

Key material capabilities include the use of:

  • Stainless steel
  • Special alloys
  • Titanium

These materials are used in pressure vessels where corrosion resistance is critical. Advanced welding methods are applied to guarantee structural integrity, even in high-pressure and high-temperature environments.

Cladding and Overlay Welding

In demanding process applications, cladding, also known as overlay welding, is used. In this process, a corrosion-resistant layer is welded onto the base material of the pressure equipment.

This ensures long service life and the required corrosion resistance without manufacturing the entire device from special materials. Cladding forms a permanent, mechanically durable part of the equipment and is especially suited for high-pressure and demanding process conditions.

Titanium and Special Materials

Material expertise also includes the use of special materials such as titanium. Titanium is used in applications requiring exceptional corrosion resistance and strength combined with low weight.

Its processing and welding require strict control of cleanliness, environment and processes, highlighting the importance of material expertise in manufacturing demanding pressure equipment.

Manufacturing Capacity for Large and Complex Equipment

West Welding’s production capacity enables the manufacturing of large and technically complex pressure equipment, supported by appropriate facilities, equipment and advanced welding expertise.

This includes the handling of thick-walled structures and special materials required in demanding pressure equipment applications.

Comprehensive Project Management and Delivery Reliability

 

Project management plays a key role, especially in long and technically demanding projects.

Deliveries often include larger entities, where pressure equipment is part of a broader supply scope. This may include prefabricated piping systems, valves, surface treatments, and auxiliary works and structures such as platforms, insulation, and pneumatic and hydraulic systems.

The company has experience in multi-year projects where schedule control, quality assurance, and responsiveness to changes are critical.

Innovative Solutions for New Industrial Needs

West Welding actively contributes to the development of new industrial solutions. The company is capable of designing and manufacturing equipment for processes that have not previously been implemented.

This includes welding trials and method development, as well as the adoption of new materials. Engineering development is carried out using modern design software to support demanding technical requirements. Project logistics have also been developed to enable the transportation of larger units via the route to the Port of Kaskinen. In addition, new technologies are implemented where applicable. Computational fluid dynamics (CFD) can be utilised in design, for example in heat transfer and insulation analysis.

Pressure Vessels Supporting the Green Transition

 

West Welding’s solutions support green transition projects across industries. Pressure vessels and process equipment are used in hydrogen applications, carbon capture and storage, new fuel solutions, and energy sector applications such as thermal energy storage.

In carbon capture, pressure vessels and heat exchangers play a key role in flue gas treatment and process control. West Welding has supplied equipment for a carbon capture project in Norway, where flue gases from a cement plant are processed for capture using pipe heat exchangers specifically designed and optimized for the process.

The green transition is also visible in maritime applications, where low-emission fuels require new tank and system solutions. LNG fuel systems demand structurally demanding vessels that account for low temperatures, pressure conditions, and marine loads. In these applications, pressure vessel design and manufacturing support safe fuel storage and handling in modern, energy-efficient shipping.

As energy systems evolve, pressure vessels and process equipment play a key role in enabling controlled and reliable processes across carbon capture, alternative fuels, and energy storage applications.

Quality, Standards and Pressure Equipment Legislation

 

All pressure vessels are designed and manufactured in accordance with high quality requirements. Operations are based on regulations, standards, certifications, and strictly controlled processes where safety and reliability are central.

Pressure Equipment Directive and Safety Requirements

Design is based on essential safety requirements covering dimensioning, material selection, welding methods, inspections, and testing. This ensures that pressure vessels meet operational and safety requirements throughout their lifecycle.

Within the EU, pressure vessels are regulated by the Pressure Equipment Directive 2014/68/EU (PED), which defines requirements for design, manufacturing, and conformity assessment when the maximum allowable pressure exceeds 0.5 bar. CE marking in accordance with PED is required to place pressure equipment on the European Economic Area market.

Pressure Equipment Legislation in Finland

In Finland, the use, supervision, and lifecycle obligations of pressure equipment are governed by the Pressure Equipment Act (1144/2016). The law defines responsibilities of manufacturers, owners, and operators, as well as requirements for placement, registration, and inspections. Periodic inspections are required for registered equipment, and the supervising authority is Tukes (Finnish Safety and Chemicals Agency).

Considering standards, PED requirements, and national legislation already in the design and manufacturing phases facilitates approval, commissioning, and regulatory processes, while supporting safe and controlled operation in process environments.

Why Choose West Welding as Your Pressure Vessel Manufacturer

 

West Welding is a reliable partner for industrial projects that require large and custom-engineered pressure vessels. The company focuses on delivering solutions that meet strict technical requirements rather than offering standardised products.

Customers benefit from strong engineering expertise, high quality standards and experience from complex industrial projects. This makes West Welding a suitable partner when reliability, performance and long-term durability are critical.

West Welding combines design and manufacturing under one roof, supported by decades of experience and strong expertise. We are known for our delivery security and commitment to responsible and sustainable practices, making us a dependable partner for demanding industrial projects.

 

Contact Us

 

If you are looking for a pressure vessel manufacturer for a demanding industrial project, West Welding offers tailored solutions based on your requirements. Contact us to discuss your project and receive a customised proposal.

 

Get in touch directly with our sales contacts:

Panu Perasto

Project Director, Sales Contact

Janne Halonen

CEO, Sales Contact

Columns

West Welding provides columns for different process control purposes. We mainly provide columns for large-scale distillation and extraction processes.  Our clients include, for example, metal and oil refinery industries as well as chemical and mining industries.

  • Stripping columns
  • Distillation columns

Reactors

West Welding designs and manufactures reactors to meet the needs of several different industries. We manufacture reactors from diverse materials up to extremely high material strengths (80–200 mm). We have delivered reactors to be used, for example, by the paper and chemical pulp industries as well as chemical and mining industries. The delivered products include:

  • Bleaching reactors
  • Chemicals industry reactors
  • Hydrogen sulphide generators
  • High- and low-pressure separators
  • Bioreactors

Hydraulic accumulators

West Welding designs and manufactures advanced hydraulic accumulators for process control purposes. We deliver, for example, hydraulic accumulators under cyclic loading that are designed to withstand major variations in pressure. The high standards set for hydraulic accumulators are considered in the material strengths as well as in the monitoring of manufacture. Our satisfied clientele consists mainly of demanding process industry companies. The delivered products include:

  • Steam accumulators
  • Buffer vessels