JUNCHANA, S.; THINVONGPITUK, C. The influence of friction time and contact angles in friction welding for Polyethylene pipes. Engineering and Applied Science Research, [S. l.], v. 38, n. 2, p. 147–154, 2012. Disponível em: https://ph01.tci-thaijo.org/index.php/easr/article/view/1606. Acesso em: 1 oct. 2026.