
Certifications and approvals
Certificates
At Carl Wilhelm Cleff we hold all relevant certificates that modern development and production require. They make processes traceable, increase efficiency, product quality and schedule reliability, and reduce complaints. We therefore use certifications and standards not merely as a mandatory part of our daily work, but to achieve higher quality-oriented productivity.
Certificates for download
Cleff
Approvals and standards
Rail
BN 918511, DIN EN 17460, UIC 651, EN 15152
Road traffic
DOT, CCC, ECE R43
Coating
DIN 17611, BN 918340, BN 918300
Welding
Welding processes to DIN EN 15085-2 – classification level CL1, scope D, S; DIN EN ISO 9606-2, DIN EN ISO 15614-n
Fire safety
DIN EN 45545, DIN EN 45545-2, NF F 16-101
Environment
DIN EN ISO 14001
Front windows
Pressure cycling resistance to UIC 566, impact-safe according to body swing test to NFPA/DIN
Insulated glass
Defined strength for structural bonding and stepped insulated glass