WeldOne Ltd

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WeldOne Ltd

WeldOne is an engineering workshop founded in 2010. We manufacture equipment and steel structures both as tailor-made solutions and mass-produced items. We work directly with customers and as a subcontractor for other companies. Our customers include industrial manufacturers, transport companies, contractors and the public sector.

Our key strength is the endless desire to improve things and optimize processes. We approach the customers’ challenges from a practical perspective and apply our know-how and expertise from other branches of business to the design process. Our production staff acknowledges the meaning of quality and takes pride in delivering flawless end results every time.

The founders, Mr. Sami Mustonen and Mr. Matti Juola, have expanded WeldOne rapidly during the first four years of operation. At the moment we have circa 30 employees and our turnover reached over 5 million Euros, during last fiscal year. Our workshop is located in Kalajoki adjacent to Western Finland’s vibrant steel industry. Growth in capacity and in know-how has allowed us to win and accept contracts nationwide across Finland. We are a member of Andament Group infrastructure corporation.

Our brochure (in Finnish)


Our workmanship complies with the following specifications:

  • EN 1090 class EXC3 certificate for steel structures and aluminum components
  • Quality, environment and work safety systems that conform to SFS-EN ISO 9001, 14001 and 18001 standards
  • Finnish Transport Agency’s approval for minor bridge deliveries