EN1090 and ISO 3834 is a top safe certificate in the scaffolding industry. It is also called CE Certificate audit whole system scaffolding by European auditors to scaffolding products welding and factory manufacture processes and welders’ qualification.
See following welding quality of ring lock scaffolding ledgers from Wellmade Scaffold, China, which has past ISO 3834 and EN1090 Audit, Testing and Certificate after 2 years training, testing, monitor.
