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

feb 2019

OSTP - A Trio of Birthdays 2019

aug 2018

OSTP Lab – achieves expanded SWEDAC APPROVAL

mar 2018

Forest Industry Fair in Sundsvall, Sweden

News Archive

Vacancies

Open application , Pietarsaari/Jakobstad

You can fill in an open application where you can define what kind of job you are looking for

Kesätyö 2019 / Sommararbete 2019, Pietarsaari/Jakobstad

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