Kirsi Mastomäki
Quality and Sustainability Manager
REPORTS AND CERTIFICATES
Verified sustainable operations.
This page contains reports, certificates, and guidelines describing Stera’s sustainability, quality, safety, environment, and operating principles. They help customers, suppliers, and other stakeholders find the information they need in one place.
Lataa sertifikaatti
Quality
ISO 9001:2015
Lataa sertifikaatti
Environment
ISO 14001:2015
Lataa sertifikaatti
Occupational health and safety
ISO 45001:2018
Lataa sertifikaatti
Welding
ISO 3834-2:2021
Certificates
Stera’s certificates demonstrate that quality, environmental issues, occupational health, safety, and welding operations are managed in accordance with internationally recognized standards. Certified operating practices are regularly assessed and developed based on the principle of continuous improvement.
Sustainability Report
Stera’s Sustainability Report summarizes the targets, results, and key performance indicators of our sustainability work. The report includes information on environmental impacts, energy consumption, personnel, safety, good governance, and the supply chain.
The 2025 Sustainability Report has been prepared in accordance with the voluntary VSME standard. You can download the report at the bottom of the page.
Guidelines and operating principles
Stera’s guidelines and operating principles define how sustainable operations are reflected in our own work, the supply chain, and cooperation with partners.
Assessments
External assessments complement certificates and help monitor the progress of sustainability work.
