Several studies have been aimed at designing PIGs having a by-pass Nguyen et al, 2001; Boe, 2007; Korea Gas Corporation, 2010; Podgorbunskikh, 2008.
Se han realizado varios estudios para diseño de PIG con baipás Nguyen et al, 2001; Boe, 2007; Korea Gas Corporation, 2010; Podgorbunskikh, 2008.