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.

Elbows

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

Reducers

News

jun 2019

OSTP Örnsköldsvik Centenary Celebration 13th June

maj 2019

OSTP Örnsköldsvik

mar 2019

NORSOK Approval for OSTP Finland Oy Ab

News Archive

Vacancies

mar 2019

Open application , Pietarsaari/Jakobstad

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.

Vacancy Archive

Customer Feedback

As part of OSTP’s ongoing drive to improve customer service and the overall experience of doing business with OSTP we have launched a simple Feed-Back link on our website. Please use this facility to report both negative and positive experiences – both are equally important to us to continue to develop appropriately to your needs.

Feedback