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Heat treatments are necessary to improve mechanical properties of steel parts.

Tornilleria Amezua processes its products according to the specifications required by the current legislation in each of the bolts made. Consequently and according to the nature of the steel used, this is by application through: 
  • Quenching
  • Tempering
  • Annealing
  • Normalized
  • Cementation
  • Nitrided

Wind Power


Bolts to


HV fasteners to

heavy industry

 B7 fasteners to


Tornilleria sector eolico
 Tornillos pernos  
Tornilleria estructura hv Tornilleria calidad 12.9

Manufacturing of fasteners to leader companies of Wind Power industry according to U.S.  and European standards.

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Since 1951 we manufacture bolts under drawing to agriculture, integrating it selves in the innovation process of the company.

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Fasteners for high performance and resistance fasteners that protect both the safety of persons such as structural.

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Manufacture of bolts for petrochemical facilities under strict quality control and with European and U.S. standards.

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