METAlworking – Sub-contracts
We offer versatile metal and engineering services for steel processing from our domestic production as part of a complete solution or as a subcontractor.
We process steel with a variety of equipment, accurately and reliably, always according to your needs and drawings. Our services are suitable for both smaller steel parts and series production.

Welding works
Do you need welding help? Depending on the batch size and number of components, we perform welding work using either welding robots or MIG/MAG welding methods.
Our experienced welders ensure that the end result is durable and that dimensional accuracy is maintained in both individual parts and series production.
Welding work can be performed as part of a comprehensive service along with sheet metal cutting, bending and other processing.

PLASMA and thermal cutting
We perform plasma and thermal cutting of steel for steel products in various thicknesses and designs. Everything can be manufactured to order according to your drawings.
When to choose plasma cutting and when to choose thermal cutting?
Plasma cutting is particularly suitable for thin and medium material thicknesses, while thermal cutting is an effective solution for thicker steel.
Our machine shop processes steel in a variety of ways, including bending, welding and sawing. Tell us what you need and we’ll think about the execution together!

Sawing of steel
We saw angle beams, steel beams and pipes. We have efficient steel cutting equipment and can, if necessary, quickly and neatly cut steel material to the desired length.
Our service is suitable for both single pieces and serial production.

Threading
We thread both rebars and round steel by rolling, both individually and in series.
Our long experience in steel threading guarantees consistent and dimensionally accurate work.
The end result is carefully manufactured threads that ensure functionality, durability and easy assembly of the parts on foundation bolts on construction sites.

Bending
We bend steel with modern equipment that can handle materials of different thicknesses and bending angles of different sizes. Bending can be performed as part of a complete service along with cutting, sawing and other processing.
Our bending methods also include a mandrel that replaces bending with radii that regular bending cannot handle.

Drilling and punching
We drill steel for various thicknesses and profiles. We have a versatile machine base that ensures clean holes, dimensional accuracy and efficient work.
Steel drilling and punching can be performed for both individual parts and series production.

Mechanical cutting
We perform mechanical cutting of steel, which is particularly suitable for straight and dimensionally accurate cuts where a uniform result is desired. You can use mechanical cutting either for individual parts or as part of a larger workshop assembly.

Steel mangling
We mangle steel when you need soft bends or large radius bends that cannot be achieved with traditional bending.
Mangling enables a smooth and controlled shape, especially for sheets where appearance and dimensional accuracy are important. We perform mangling as part of a comprehensive service or as a separate work step, depending on your needs.

Surface treatment
We perform surface treatments of steel with spray painting, which improves the material’s durability, protects against corrosion and gives it a perfect appearance.
Thanks to our own painting workshop, we can react quickly, keep delivery times short and ensure that the painting meets the object’s intended use and requirements.
We always choose surface treatment methods for steel based on material, intended use, design and environmental conditions.
We also deliver hot-dip galvanized parts on a daily basis. We have subcontractors who carry out the hot-dip galvanizing.
For the designer
We have designed and calculated our standard products for you to focus on a comprehensive design. As a designer, we provide you with usage and calculation instructions that make designing easy and flexible.
Quality
We create quality that is easy to build on.
Our factory operates in accordance with the certificates EN 1090-1:2009 + A1:2011 and our production and products are monitored by Kiwa Sertifiointi Oy and Nordcert AB.
Our quality system is based on the requirements of the standard SFS-EN ISO 9001.
Interested?
Do you have any questions about our products? Do you need more specialized steel components? Call or send a message and request a quote. We will respond with our long experience in steel products.
Call Semko and ask more – let’s solve your project together.


