Welding stainless steel – precision, strength and a superior finish

When durability, hygiene and finish all matter, stainless steel is often the material of choice. At Ollerup Maskinfabrik we have many years of experience in welding stainless steel – and we know it takes more than the right machine. It takes an understanding of the material, precise control of the heat input and an uncompromising approach to quality.

Stainless steel welding experts

We weld a wide range of stainless steel grades – including AISI 304 and 316. We mainly use TIG welding, which gives a clean, controlled joint without spatter and with an attractive visual finish. For thin sheet we offer laser welding, and for series robotic welding.

Perfect for the food and pharmaceutical industries

Stainless steel is known for its high corrosion resistance and is particularly well-suited for environments where hygiene and cleaning are paramount – such as in the food and pharmaceutical industries. Our welds comply with the requirements and standards set for these industries, and we offer complete documentation, including material certificates and welding reports as required.

Quality and precision in all details

Every weld is inspected – visually and with testing when the job requires it. Our certified welders ensure consistent quality across small and large series, and if the part requires a check of geometric tolerances, we measure it on our Zeiss 3D coordinate measuring machine and supply a measurement report.

TIG welding of stainless steel

TIG welding (141) is our preferred method for stainless steel. The process gives full control of the heat input and a narrow, clean weld seam – important when the weld must be visible, tight or easy to clean. We use TIG for everything from thin sheet and tubes to visible joints on machines and equipment.

For thicker sections and larger stainless steel structures we use MIG/MAG welding, which gives a higher welding speed.

Laser welding of thin stainless sheet

For thin stainless sheet we offer laser welding at up to 3 kW. The heat is concentrated in a very small area, so the part is affected as little as possible. This means less distortion and a narrower heat tint zone than with conventional welding. Laser welding is also fast and well suited to narrow, precisely placed weld seams.

Robotic welding of stainless series

For series and long weld seams we weld stainless steel in our robotic welding cell. The robot handles parts up to Ø2200 mm and 4000 mm in length and delivers the same weld quality from the first part to the last.

Certificate welding

Our welders are certified in TIG (141, 142), MAG (135, 136, 138) and stick welding (111), and our welding production is certified to EN ISO 3834-2. For stainless jobs we supply, as required:

Welding procedure specifications (WPS) and weld logs
Material certificates and full traceability
NDT and pressure test reports from an accredited third party

Our quality management system is approved by the Danish Veterinary and Food Administration – relevant when the parts are used in food production.

From plate to finished stainless component

We can deliver the whole process from plate to finished welded stainless component in one place:

Laser cutting of stainless steel up to 25 mm
Plasma cutting of stainless steel up to 60 mm
Cutting of stainless sheet up to 10 mm and 4000 mm
Press brake bending with up to 500 tonnes and 4500 mm bending length
Grinding of surfaces and edges

Questions about welding stainless steel

Which stainless steel grades do you weld?

We weld grades including AISI 304 and 316. If you need a different grade, contact us and we will assess the job and the right welding method.

Which welding method is best for stainless steel?

It depends on the part. TIG gives the cleanest and most controlled seam and is our standard. For thin sheet, laser welding is often best, and for series we use robotic welding. We are happy to advise on the choice.

Can you supply documentation for the food and pharmaceutical industries?

Yes. As required, we supply welding procedure specifications (WPS), weld logs, material certificates and NDT and pressure test reports, and our quality management system is approved by the Danish Veterinary and Food Administration.

Can you also cut and bend the stainless parts?

Yes. We laser cut stainless steel up to 25 mm, plasma cut up to 60 mm, shear up to 10 mm and press brake bend with up to 500 tonnes. That way the whole part can be made in one place.

How large are the stainless parts you can weld?

In our robotic welding cell we weld parts up to Ø2200 mm and 4000 mm in length, with up to 2000 kg between centres. Larger parts are welded manually, and we have cranes with up to 12 tonnes lifting capacity at every workstation.

Welding that lasts – and looks good

At Ollerup Maskinfabrik, we don't compromise. We deliver stainless steel welds that are not only strong and functional, but also aesthetically pleasing. Whether for a food tank, piping, or a custom component, we ensure the finished result meets your requirements and expectations.