Certifications
Highest standards – certified and award-winning
At LEFFER, quality is not just a promise, but a standard we live by. Our quality management system is recertified according to DIN EN ISO 9001:2015 and also meets the strict requirements of the ASME Code (U and U2).
A comprehensive quality management manual and detailed quality assurance and work instructions ensure that all processes are continuously monitored, documented, and improved. We have received multiple awards from our customers for the quality of our products – proof of the reliability and precision of our work.
Our certifications at a glance
Quality and management systems
- ISO 9001:2015 – Quality management
- ISO 45001:2018 & SCC – Occupational health and safety management
- ISO 50001:2018 – Energy management system
- ISO 17025 – Testing laboratory competence and calibration capability
- ACHILLES – Certification of Membership
Welding technology, pressure equipment and piping
- EN ISO 3834-2 – Welding quality requirements
- 2014/68/EU (PED) Module H/H1 – Pressure Equipment Directive
- ASME Code Stamp U & U2 – Certification according to ASME Code
- AD 2000 HP0 / HP100R – Manufacture of pressure equipment
- DIN EN 13480 – Metal piping
- DIN 2303 / Q2 BK1 – Welding of military products
Steel and plant engineering
- EN 1090-1 WPK / EN 1090-2 EXC1–EXC4 – Construction of steel and aluminum structures
- DNV – Welding Workshop Approval Certificate
- WHG – Manufacture of water-polluting facilities in accordance with the Water Resources Act