It is therefore important to guarantee that the welding is done as efficiently as possible and that suitable inspections are made at all the phases of the process. In this context, the Standards of the UNI EN ISO 3834 series represent a sound instrument at the disposal of the manufacturer as they offer the opportunity to keep the elements influencing the quality of the welding under control and the relative certification contributes to giving it external visibility. On the basis of these considerations, P.C.M. S.r.l. was awarded the RINA ISO3834-4:2006, n. 3834-317/11/S Quality requirements for fusion welding of metallic materials on 26th October 2011. This certification fulfils the requirements of Ministerial Decree 14/01/2008 relative to “Technical standards for buildings” and completes the company procedure already undertaken with P.C.M. S.r.l holding the certificate of Activities of Transformation Centre no. 1107/11. These achievements are a further important step ahead for customer satisfaction, as provided for by the Teamnetwork Group policy.