Our workshop specializes in the manufacturing of longitudinal seam-welded tubes and cones. Our large press brake and modern submerged arc welding station enable the precise, high-quality production of even very large products.

Customers can freely choose the desired diameter, wall thickness, and length for their tube. If needed, we performs stress relieve annealing in our heat treatment furnace to remove welding stresses.

We have extensive experience manufacturing tubes from a variety of materials, for example:

  • Structural steels: S235, S355, S460
  • Wear-resistant steels: Hardox, Dillidur
  • High-strength steels: S690QL (Strenx 700)
  • Shipbuilding and OFFSHORE steels
  • Pressure-vessel steels
  • Heat-resistant steels (e.g. 16Mo3)
  • Quenchable boron steels
  • Stainless and acid-proof steels: AISI 304, AISI 316
  • High temperature stainless steels: 253 MA
  • Duplex steels: e.g. 1.4462, 1.4162, 1.4362

Dimensions and Capacity

Manufacturing range:

  • Diameter from 270 mm up to 8000 mm (diameter freely selectable)
  • Wall thickness up to 135 mm
  • Maximum length 13.6 m without circumferential welds

AP-Tela Oy is specialized in the production of longitudinally welded tubes. Our large press brake and modern SAW welding station ensure accurate, high-quality manufacturing. Customers can select the tube diameter, wall thickness, and length according to their needs. If required, we anneal the tubess to relieve welding stresses, which improves their durability and reliability. Our high-quality welded tubes and cones are suitable for a variety of industrial applications.

  • Specialization in longitudinal welded tube manufacturing
  • Large press brake and modern SAW welding station
  • Freedom to choose tube diameter, wall thickness, and length
  • Sterss relieve annealing to eliminate welding stresses