ดุสิตโศภิตวงศ์ ท. . and นรเศรษฐ์โศภน ส. . . (2020) “ Influence of Fluid Mandrel on Area Reduction, Drawing Stresses and Thickness in Copper Tube Drawing ”, Engineering and Technology Horizons , 32(3), pp. 13–18. available at: https://ph01.tci-thaijo.org/index.php/lej/article/view/241186 (accessed: 17 April 2025).