ppr pipe welding machine 1. Spec:For Dia20-160mm pipe 2.usage:PP-R,PE,PP-C, ... 20-160 PPR pipe and PPR fittings, also composite pipe, for instance PPR-FB-PPR pipe. We can arrange production to ... and the red one turns off. It means that the machine has been on auto control condition, and can begin to ... the heat-up time 50%. PPR pipe and fitting of welding machine