Pipe welding

We carry out welding of plastic pipes for the needs of industry, municipalities, cities and private customers. We operate all over Finland and in Sweden and Norway.

High-quality pipe welding according to the customer’s needs 


High-quality methods

Pipe welding is done either by butt welding or sleeve welding, depending on which method is specified in the plan for the project in question. Plastic pipes are joined together precisely and with high-quality equipment, so that they can withstand time and wear.


For a variety of purposes

Welding plastic pipes can mean, for example, connecting sewer pipes, golf course suction pipes, suction dredger’s pipe lines or other lines formed by plastic pipes by welding. Whether it’s welding a single seam or kilometers of plastic pipe, we can help! 


A flexible partner

We carry out a wide variety of projects, from welding plastic pipes to membrane welding, suction dredging and earthwork. So, if you are looking for a versatile professional who listens and understands your needs, contact Vesirakennus Ojanen Oy. 

Need a partner for a longer period of time?

We also implement contracts with long-term contracts. Call us or contact us using the form, and we’ll discuss the possibilities further!

With over 20 years of experience

For more than 20 years, Vesirakennus Ojanen Oy has been implementing a wide variety of water and water basin renovation projects for the forest, oil and mining industries and other private and public clients in Finland, Sweden and Norway. Now the job description has expanded to also cover pipe and membrane welding for the various needs of customers.

How is the welding of plastic pipes carried out? 

A customer, such as a city, an industrial operator or an individual, requests an offer for pipe welding and we calculate the price for the work. It can be a small job, such as welding a single seam, or a larger pipeline welding. The work is always carried out based on a plan drawn up in advance and with the welding method mentioned in it, i.e. socket or butt welding.

Welding is done on site. If necessary, we also deliver the materials to the destination. 

How do we serve private customers?

For private customers, plastic pipe welding is usually related to municipal engineering, i.e. water pipes and drainage, for example. We can also implement smaller projects, such as pipelines related to irrigation systems. The pipe sizes and the selected welding method depend on the target and the plan. 

Where did the idea for pipe welding come from? 

Vesirakennus Ojanen Oy specializes in suction dredging of industrial settling basins and waterways. In suction dredging, excess mass is sucked from the bottom, which is pumped along pipelines to the ground. We have welded suction dredger pipelines suitable for our own use, and our professionalism has developed to such a high level that we are now able to offer the service to our customers as well. 

Our customers’ experiences

Vesirakennus Ojanen has proven to be a most qualified and cooperative contractor. I can warmly recommend the company to anybody in need of their type of services!

Johan Nordback, Project Manager, Structor AB

Many contractors voiced their opinion that the dredging tolerances were too strict. The people at Ojanen, on the other hand, assured us they could fulfil these requirements in their bid that went on to win the tender. They kept their word, and the quality of the outcome surpassed our expectations so much that we paid the company the bonuses mentioned in the contract.

Johan Nordback, Project Manager,Structor AB

When choosing a contractor, Vesirakennus Ojanen’s numerous good references convinced us. The choice turned out to be the right one: Ojanen realized the project with high quality and within the agreed budget.

Peik Ellingsen, Chairman of the Christiania Rowing Club

The originally pitch-black water became stream-clear as a result of the purification process. In addition to everything, the sludge pumped into the geotubes was dried so efficiently that it could be safely and cheaply disposed of in a landfill.

Tero Toivanen, director of the technical center of the city of Joensuu

In time, a need for dredging was found in the area, and Ojanen was chosen as the dredging contractor. After the initial stages, geotube sacks were introduced in the contracts to spread the sludge. The cooperation has gone smoothly and well all along.

Miikka Jäntti, group manager of Neste Corporation

Contact us and we’ll discuss the possibilities further!

We operate from Punkalaidun to all over Finland, Sweden and Norway, for example. You can also get comprehensive land construction and transport services from us. Contact us if you are looking for an efficient and reliable partner for your water construction project! 

Request an offer!

Leave us a question via the form or contact us by phone or email!

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Plumbing specialist since 2003 


Y-ID: 1814859-9

Kauppakuja 1 A 8
31900 Punkalaidun, Finland

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