Large-diameter PE pipe production process

The invention discloses a large-diameter PE pipe production process. The large-diameter PE pipe production process comprises the steps that traction pipes are spliced; a pipe blank is extruded, specifically, the high-density polyethylene material is added into a plastic extruding machine, and the pipe blank is extruded through a die head; sizing the extruded pipe blank through a vacuum sizing box; traction operation is conducted, specifically, the sized pipe is connected with a traction pipe, and traction operation is conducted through traction equipment; spraying and cooling: after the traction pipe is connected, pulling the traction pipe to move forwards through traction equipment, so that the pipe blank subjected to vacuum sizing is pulled out into spraying equipment to be cooled; detecting and cutting: detecting the thickness of the cooled pipe; pipe cutting equipment is used for conducting fixed-length cutting on the pipe; and blanking and warehousing are conducted, specifically, the cut pipe sections ro