How many movies have Panna Rittikrai and Sorapong Chatree acted in together?

They have worked on 6 movies together! Their first movie together was Grade 4 (No Lines) (1983) while their highest rated movie together was Ong Bak 2 (2008). They have not worked together since BKO: Bangkok Knockout (2010). They are most known for their action films together.