Metodo de fabricacion de un tubo de acero, que comprende colar un acero que contiene 0,18 a 0,32% en peso de c, 0,3 a 1,6% de mg, 0,1 a 0,6% de si, 0,005 a 0,08% de al, 0,2 a 1,5% de cr, 0,2 a 1% de mo y el resto hierro e impurezas, moldear un tubo, templarlo, estirarlo en frio, y templar el tubo final; uso; tubo de acero; varilla; y sistema de perforacion

Embodiments of the present disclosure are directed to methods of manufacturing steel tubes that can be used for mining exploration, and rods made by the same. Embodiments of the methods include a quenching of steel tubes from an austenitic temperature prior to a cold drawing, thereby increasing mechanical properties within the steel tube, such as yield strength, impact toughness, hardness, and abrasion resistance. Embodiments of the methods reduce the manufacturing step of quenching and tempering ends of a steel tube to compensate for wall thinning during threading operations. Embodiments of the methods also tighten dimensional tolerances and reduce residual stresses within steel tubes.