Production technology of high-orientation-degree PE solid-wall pipeline

A production technology of a high-orientation-degree PE solid-wall pipeline comprises the following steps: mixing raw materials; heating and extruding by using an extruder; orienting in two directions, and stretching to form a belt; pulling a circular pipe shaped blank to a circular pipe shaped expansion body, and axially and annularly orienting; coiling the prefabricated coil; arranging the coilto a rack; expanding a mandril; crisscross winding the prefabricated belt by 90 degrees; winding the pulled two prefabricated belts around the expanded mandril, wherein the winding angles between thetwo prefabricated belts and a mandril shaft are 45 degrees; winding and forming the two prefabricated belts by 90 degrees by layer in a crisscrossing manner; locally heating and adhering under high frequency; cooling through air by layers; circularly winding until specified thickness is reached; contracting the mandril; releasing a pipe body from a die. The tensile strength, the modulus and the impact toughness of the orie