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CELO, global industrial fasteners manufacturer

Heat treatment

To obtain the required mechanical properties, case hardening and neutral hardening is applied in accordance with the technical specification of each family of products. All coil wire used in our production plants are phosphate free, which reduces the occurrence of problems like brittleness and micro crack.

The temperature and gas atmosphere conditions are controlled by a specific software that guarantees the process conditions and the properties of the final product, as well as the traceabiltity of all processed batches.