Pressing and roll-forming of metal and powder metallurgy n.e.c.

This sub-class includes pressing and roll-forming of metal and powder metallurgy not elsewhere classified. Examples: - forging, pressing, stamping and/or roll-forming of metal - powder metallurgy: production of metal objects directly from metal powders by heat - treatment (sintering) or under pressure - manufacture of crowns and/or closure (e.g., bottle caps, metallic closures)