Osorio de CastroStand: 4H06Certifications and quality assurancehttps://osoriodecastro.com/Easy Cut steels11SMnPb30/37 + C / 11SMn30/37 + COther productsCarbon steelsPre-treated steels (Quenching and tempering)Aceros de CementaciónCast ironHard Chromed / Tempered Hard chromeInner Lapped Tube H8/H9Other alloys