ISO 3834 Certification for Welding Quality

The quality of a welded joint can be partly ascertained by checking the product, but must be guaranteed in parallel by the design process: this requirement underlies the introduction of the ISO 3834 standard, which defines the "Quality requirements for fusion welding of metallic materials".

According to the Ministerial Decree of 14 January 2008 (NTC08), the EN ISO 3834 standard is mandatory for all metal carpentry workshops that perform welding operations on structural elements.

Given the new European regulatory standards that require the CE marking for metallic structural components according to EN 1090-1, compliance with ISO 3834 requirements – already widely applied in the construction of machines, pressure equipment and plants – has become a preliminary, mandatory requirement for all companies that produce structural components with welded joints.


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