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Muehlhan GroupMuehlhan Group
services/specialty/welding engineering
Precision welding repair for wind energy structures

Muehlhan Wind Service provides expert welding repair for critical load-bearing components across wind turbines, towers, foundations, and steel structures. Our certified welding teams restore structural integrity and extend the lifecycle of your assets, ensuring they remain compliant, safe, and ready for continued operation.

Built on deep experience in structural steelwork and welding, MWS combines engineering, inspection, and repair to deliver complete structural welding solutions. From concept development to validated execution, we manage the entire process in-house with controlled workflows and full documentation.

Engineered excellence

Efficient and controlled processes

Every repair follows a precise, traceable process led by our engineering and QA/QC teams, and executed by certified welders and inspectors.

Engineering & planning: Our engineers design the repair solution, including 2D/3D design, method planning, materials, risk assessment, and if required, simulation.

Welding, machining & structural repair: We perform hot-work repairs on equipment, tower structures, pitch and yaw systems, and complex, hard-to-access areas.

Testing & documentation: Comprehensive QA/QC validation, NDT inspection, and full documentation ensure OEM, regulatory, and QHSE compliance.

Combined expertise

Restore structural integrity and performance

Our teams include certified welders, engineers, NDT technicians, and inspectors: specialists who understand both the technical and operational realities of wind assets. We are committed to delivering the highest level of quality and efficiency in every project. By combining structural assessment, engineering design, and precision welding, we deliver repairs that reduce downtime, mitigate risk, and return your assets to optimal performance.

Supporting services
Inspection & NDT analysis

We identify the extent and root cause of cracks, corrosion, or deformation using advanced and traditional non-destructive testing (NDT) methods, including Phased Array Ultrasonic Testing (PAUT). These techniques provide early fault detection, validate welded repairs, and help prevent costly breakdowns.

Yaw ring and pitch repair

Repair and machining of yaw and pitch components to restore alignment and functionality.

Engineering & project management

Our engineers excel in troubleshooting, analysis, design, and prototyping, ensuring every repair or modification is technically sound and built to last.

Fabrication & workshop support

In-house fabrication of spare parts, mockups, and repair procedure validation to ensure fast, seamless field execution.

Proven welding expertise for the wind industry

Through our integrated approach — combining inspection, engineering, and welding — MWS can service all aspects of your maintenance or repair process. We specialize in developing and certifying unique welding procedures for any given project or client, ensuring each repair meets the highest international standards.

The world is our workplace

Wherever the wind takes us, we deliver trusted service, skilled teams, and lasting results for the global wind industry — driving a cleaner, more sustainable tomorrow.

Why partner with MWS?
01.
Proven expertise in welding & engineering

Our welding and engineering excellence is powered by 3WIS — now part of Muehlhan Wind Service. Founded in 2018, 3WIS brings a rare combination of certified welding competency and engineering precision, backed by a strong documentation culture and a proven track record in wind. Since joining MWS in 2023, their specialist approach strengthens our ability to solve complex steel and structural challenges with the highest level of craftsmanship and compliance. Together, we deliver solutions that stand up to offshore realities, and stand the test of time.

02.
Certified technicians and site managers

Skilled professionals trained in the latest mechanical, electrical, and HSEQ standards to ensure quality and safety.

03.
Efficient project execution

From pre-assembly to commissioning, we deliver every phase on time, within budget, and to OEM specifications.

04.
Flexible manpower and logistics

Scalable teams and equipment tailored to each site’s requirements for smooth coordination and minimal downtime.

05.
Global standards, local precision

We bring consistent quality and compliance to every onshore and offshore project — wherever the wind takes you.

Spin the globe, discover our work

Explore 500+ completed wind projects across three continents and find your inspiration on our interactive map.

Explore our projects around the globeExplore our projects around the globe
Our steel stays strong — and so do our customer relationships
Customer retention
90%
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“3WISbroughtexpertiseandhands-onexperienceintothedialogue.Theirpracticalknowledgeensuredthateverydetailwasconsidered,frominitialdesigntofinalexecution,helpingusidentifyissueswewouldn’thavespottedonourown.”
- Chief Engineer, Stiesdal Offshore A/S​
Talk to our welding specialists

Need support with wind turbine welding repair or structural reinforcement?

Get in touch with Muehlhan Wind Service to discuss how our certified welding experts can help extend the life of your assets and keep them performing reliably. Contact us today.

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CEO at 3WIS – Welding & Engineering, EMEA, APAC & North Americas
Simon Øland
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