Core component for seamless tubes: Mandrel bars

We deliver mandrel bars of up to 28 m in length and up to 365 mm in diameter to nearly all manufacturers of seamless tubes. A mandrel bar is used to roll a pre-pierced steel billet to produce a tube blank (the preliminary seamless tube).

We produce these mandrel bars in-house on one of the largest forging machines as well as on a state-of-the-art rolling mill, including straightening and machining units specifically designed for the “mandrel bar” long product.

We can supply you with mandrel bars made from general-purpose hot work steels and specialty steels tailored to suit the various tube rolling methods and made to withstand individual stresses in the following versions, all in based on your request:

  • Finish-machined and chrome-plated
  • Finish-machined and oxidized
  • Pre-machined, i.e. quenched and tempered, peeled
     

Click here for further information and technical datasheets on hot work steels (Mandrel bar)

Contact:

Head Office
Estonia, Tallinn, Armatuuri 3 / Betooni 26 a
Phone: +372 651 7150
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Sintija Stikāne
Managing director
Tel.: +371 676 15244
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Applications:
Automotive industry
Mechanical and plant engineering
Energy Industry
Aerospace
Medical technology
Food and packaging industry
Structural and civil engineering
Hydraulic elements
Chemical industry
Mining