Osorio de CastroStand: 4H06Certifications and quality assurancehttps://osoriodecastro.com/Other alloysOther productsCarbon steelsEasy Cut steelsPre-treated steels (Quenching and tempering)Aceros de CementaciónCast ironHard Chromed / Tempered Hard chromeInner Lapped Tube H8/H9