How many movies have Piathip Kumwong and Sorapong Chatree acted in together?

They have worked on 8 movies together! Their first movie together was สัตว์มนุษย์ (1976) while their highest rated movie together was ผิดหรือที่จะรัก (1980). They have not worked together since มัทรีที่รัก (1983).