According to the need to renew the technology of track devices, Metro de Santiago instructs Omega Services to carry out a reengineering of these parts that are manufactured by casting and redesign them to adapt them to mechanically welded technology. This commission posed the great challenge of integrating two construction systems in scenario of high contingency such as the circulation of Santiago Metro trains, achieving as a result a product that delivers a high impact solution to a problem of high complexity such as It was this approach