Vacuum set tube formed by tubular product and processing technology thereof

The invention discloses a vacuum set tube formed by a tubular product and a processing technology thereof and belongs to the technical field of tubular product forming. The technical scheme is as follows: the vacuum set tube comprises a set tube and a plurality of through holes, wherein the end part of the set tube is detachably assembled at a discharge port of an extruder and a coating layer passes the set tube; and the through holes through which a vacuumizing mechanism exhausts air are formed in the wall of the set tube, and the set tube comprises a set tube body and annular blocks communicating to two ends of the set tube body. When the vacuum set tube is used, a condition that the formed coating layer deforms can be reduced, so that the product quality and performance of the coating layer can be improved and the application value in the market is improved. 本发明涉及一种管材成型的真空定型管及其加工工艺，属于管材成型技术领域，其技术方案包括：端部可拆卸式装配在挤出机出料口处的、供包覆层穿过的定型管；以及，开设在所述定型管管壁上的多个供抽真空机构抽气的通孔，所述定型管包括定型管体以及与定型管体两端相连通的环形块。本发明的真空定型管在使用时，能够减少成型出