Welding and mechanical installation crews

Since 2015, MASTERWELD has supplied qualified welders, pipe fitters and English-speaking working foremen for boiler pressure-part, industrial piping, waste-to-energy and planned outage work.

We mobilise cohesive crews and coordinate the documentation and transport required for cross-border site work.

Large boiler pressure-part assembly being positioned during industrial installation work
MASTERWELD project photographyBoiler pressure-part installation
2015Operating since
50+Specialists
8European markets
ISO45001:2018

Selected client experience

ANDRITZKANADEVIA INOVAORABHP PRESSURE WELDING

Qualified people. Crews built around the scope.

Personnel are matched to the work, welding processes, material groups, qualification ranges and site requirements. Wherever the scope permits, we deploy cohesive teams whose members already have experience working together.

01

Qualified welders

Qualified personnel for boiler pressure-part repair and replacement, boiler tube panels, superheaters and industrial piping. Available EN ISO 4063 processes: 111, 135, 136, 138 and 141.

02

Pipe fitters

Fitters experienced in isometric drawings, P&IDs and project documentation, from fit-up and prefabrication to assembly and on-site installation.

03

Working foremen

An English-speaking working foreman can coordinate daily activities, interface with the client’s site team and manage shift handovers while remaining part of the crew.

Active tube-sheet welding during boiler pressure-part work
Tube-sheet welding during pressure-part work

Welding to the specified procedure and qualification range

Before mobilisation, personnel are matched to the process, product type, material group, dimensions and welding position required by the project.

Controlled execution

Client-supplied Welding Procedure Specifications

On site, welding is carried out in accordance with the applicable WPS supplied by the client and the project’s inspection and traceability requirements.

111MMACovered electrode
135MAGSolid wire
136MAGFlux-cored wire
138MAGMetal-cored wire
141TIGTungsten inert gas
Completed circumferential welds on closely spaced boiler tubes
Materials and applications

Boiler pressure parts and specialist alloy work

  • Carbon, stainless and alloy steels
  • Alloy 625 / Inconel 625 weld overlay
  • Seal welding and fixed-pipe H-L045
  • Mirror-assisted welding in restricted access
  • Membrane walls, tube panels and superheaters
  • Industrial piping, valves and pressure components

Occupational health, safety and site readiness

A certified management system, suitable respiratory protection and project-specific documentation support consistent execution from mobilisation through completion.

MASTERWELD ISO 45001:2018 occupational health and safety certificate
ISO 45001:2018

Certified OH&S management

Defined responsibilities and risk controls, supported by risk assessments, toolbox talks, site inspections and corrective actions.

VarioProtect air-fed welding helmet with filtration unit
TH3 respiratory protection

VarioProtect XXL-W TC AIR

Air-fed helmets provide filtered airflow and TH3-class respiratory protection for demanding welding work when required by the scope or site risk assessment.

MASTERWELD crew vehicle used for European project mobilisationOwn vehicle fleet

Documentation and transport coordinated before site arrival

MASTERWELD coordinates employment and posting documents, occupational health examinations, site-safety training, cross-border notifications and transport. Our own fleet supports crew mobilisation and planned personnel rotations.

DE · NL · BE · DK · SE · NO · FI · PL
  • A1 certificates for posted workers
  • SSG Entré, Heta Arbeten and ID06 for Sweden
  • B-VCA and VOL-VCA for Belgium and the Netherlands
  • SCC and SGU requirements for Germany
  • Limosa declarations for Belgium
  • HMS cards and a-melding support for Norway

Selected work delivered in 2026

Boiler modernisation, pressure-part replacement, prefabrication and mechanical installation at energy and waste-to-energy plants.

01Germany

Giessen

Boiler modernisation involving the replacement of boiler pressure parts, boiler tube panels, superheaters and valves, including the prefabrication and installation of new components.

02Sweden

Västerås

Modernisation of an existing energy boiler, including the replacement of superheaters, boiler tube panels, other pressure-part elements and valves.

03Sweden

Stockholm Exergi

Högdalen & Hässelby

Major overhaul and modernisation of waste-to-energy boilers, including complete boiler tube-panel sections, the full set of panels at one boiler level, superheaters and valves.

04Faroe Islands

Waste-to-energy plant

Prefabrication of piping and components and on-site installation of a pumping station, valves and auxiliary equipment at a waste incineration plant.

Workmanship in demanding industrial environments

Authentic photographs from MASTERWELD assignments.

TIG welding in a restricted-access boiler location
Restricted-access TIG welding
Mirror-assisted welding setup between boiler tubes
Mirror-assisted welding setup
Completed welds on pressure-part tubes
Completed pressure-part tube welds
Boiler tubes prepared and tack-welded before final welding
Boiler-tube fit-up

Qualified crews for your next industrial assignment

For availability of welders, pipe fitters, working foremen or complete crews, contact our project team.

projects@masterweld.pl info@masterweld.pl