... PE/PP-C connection. Our factory the following products ( 1500W with DN 20, 25, 32, 40, 50, 63 ). ... of precise temperature control, high reliability, good safety and unique non-stick plastic mold technology, convenient operation. ... Pipe size(mm)Heating Time(s)Melting Depth(mm)Cooling Time(s)2051432571633282044012214501822.556324246753026890403281105038.510 Copper Mould PPR Plastic Pipe Welding Machine ...