Clean the welder indicator and heating tools before and after hot-melt bonding. Welding indicates that there is dirt, wipe it off with a clean cloth, and the polyethylene residue on the heating tool can only be removed with a wooden scraper; check whether the butt welding machine matches the diameter of the pipe and the specified butt welding cycle; the heating time and heating time of the hot melt connection The temperature should comply with the regulations of the connection tool manufacturer and the pipe and pipe manufacturer. The welding temperature is usually between 200°C and 235°C; the pressure holding and cooling time of the hot melt connection should conform to the requirements of the hot melt connection tool manufacturer and the pipe and pipe manufacturers. According to the manufacturer's regulations, the connector must not be moved or pressured during the holding and cooling time.
