õhukeseseinaliste torude vormimise meetod toorikule sisemise surve avaldamisega vedeliku abil mille tulemusena toorik omandab matriitsi vormi (vrd gaas-toruvormimine), a method of die forming in which a metal tube is placed in an encapsulating die, and the ends are sealed; a fluid is introduced through one of the end plugs, achieving sufficient pressure to expand the material (tube) to the shape of the die (compare: hot-metal-gas forming)