In the plastic chain conveyor 1, as shown in FIGS. 5-7, front and back ends 2a, 2b of plastic chain modules 2, which are made of a plastic material such as acetal, are rotatably linked by multiple plastic connecting pins 3a (for instance, bar-shaped connecting pins with circular cross-sections and made of nylon) and metal connecting pins 3b (in this example, bar-shaped connecting pins with circula