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Working Pressure Calculations

The weld factors used in the calculations below are according to our approvals from authorities. Internal vacuums are not taken into account in the calculations.

 Pipes and tubes
Calculations according to EN 13480-3 or ASME B31:3 in all available dimensions and grades.

Calculations according to EN 13480-3 in all available dimensions and grades.




mar 2019
As our business develops, we constantly need knowledgeable and motivated personnel, such as welding operators, metal workers, maintenance installers, electric automation installers, etc. You can fill in an open application where you can define what kind of job you are looking for.
apr 2019
We are currently looking for employees for the following tasks. All applications must be submitted via the Barona website.

- Material, welding & forming specialist
- Logistics manager
- The welder
- Electrician for shift work
- Welding operator

All applications can be found on the Barona website ( with the keyword OSTP.