Quality
Certified at every site
All four companies work to DIN EN ISO 9001 and DIN EN ISO 14001, plus approvals for steel construction and rail vehicle manufacturing.
Certificates
Certifications at a glance
Certificates are available from each company or via our enquiry form.
| Standard | Cleff | W&W | CES | Lungmetall |
|---|---|---|---|---|
| DIN EN ISO 9001Quality management | ||||
| DIN EN ISO 14001Environmental management | ||||
| EN 1090-2 EXC 2Welding in steel construction | ||||
| DIN EN 15085-2 CL 1Welding of rail vehicles | ||||
| DIN EN 17460Bonding in rail vehicle manufacturing | ||||
| DB rating Q2Deutsche Bahn supplier qualification |
Inspection
How we inspect
C.E. SchneckenflügelEvery flight individually
Gauge inspection of 100 percent of screw flights.
LungmetallFirst article and measuring
Dimensional and visual inspection, first article inspection, test reports.
Carl Wilhelm CleffRail vehicle standards
Welding and bonding to EN 15085-2 and DIN EN 17460.