Certification EN1591-4

Dijkgraaf Support is accredited by TQ Cert as a training centre for training and certification in accordance with EN 1591-4.

EN 1591-4 ‘Flanges and their joints. Qualification of personnel competency in the assembly of the bolted connections of critical service pressurised systems’ was approved by the majority of European countries in 2013.


See the TQ Cert certificates of Dijkgraaf Support below:

Certificates Dijkgraaf-Support 01

Certificates Dijkgraaf-Support 02

 See the TQ Cert certificates of Peter Dijkgraaf below:

Certificates Dijkgraaf-Support 03

Certificates Dijkgraaf-Support 04