• 2413 – Metallic frame constructions. Annual production above 2500 (higher technicality).
• 2613 – Lock gates, cofferdams and overfall spillways.
• 3152 – Metal coverings excluding lead (confirmed technicality).
• 3183 – Ribbed or corrugated covering sheets (higher technicality).
• 3813 – All cladding types (higher technicality).
• 4413 – Metalworking (higher technicality).
• 4421 – Metallic structures

Qualification 4413 covers the following qualifications: 3511 – 3611 – 4572 – 4582.