The aim of Boccia is to throw leather balls as close as possible to a white target ball.
The Thais, ranked second in the world, produced a superb display to claim an impressive 18-1 victory over hosts and defending champions Great Britain in Monday’s semi-final.
Having started the day with an 11-1 victory over Brazil in the last eight, the team of Witsanu Huadpradit, Mongkol Jitsa-Ngiem, Pattaya Tadtong and Watcharaphon Vongsa then delivered a message of intent against the hosts in London.
China were the surprise opponents for Thailand in the final (due late last night), after the No 7-ranked team followed victory over South Korea with a 6-4 comeback win against Portugal.
Elsewhere, impressive Brazilian pair Eliseu Dos Santos and Dirceu Pinto were made to work hard by GB hopefuls Stephen McGuire and Peter McGuire before triumphing 3-2 in the Mixed Pairs-BC4 class.
They will now face the Czech Republic in the gold-medal decider, after the team of Radek Prochazka and Leos Lacina fought back and won a tie-break to overcome Canada.
In the Mixed Pairs-BC3 class, Greece overpowered Belgium 7-0.
They will face Portugal, who edged out South Korea 4-3 in the second semi-final.
Elsewhere, in shooting, Phiraphong Buengbok and Mala Sihabandit missed out on the final of the mixed R6-50M Rifle Prone-SH11 after they fired 580 and 575 to finish 27th and 37th respectively yesterday.