阅读说明：本技术 用于改性和连接取向管道的方法 (Method for modifying and joining oriented pipes ) 是由 A·K·塔莱亚 R·克莱平格 于 2018-03-27 设计创作，主要内容包括：本发明涉及一种用于改性双轴取向管道的改性方法,包括：a)提供通过在轴向方向上和在圆周方向上拉伸由热塑性聚合物组合物制成的管而制成的双轴取向管道,b)将插入件置于该管道的端部中,其中该插入件横截面的外圆周基本上匹配该管道横截面的内圆周,和c)加热该端部,以使得该端部轴向收缩,同时该端部横截面的内圆周基本上得以保持,以获得具有增厚端部的经改性的双轴取向管道。(The invention relates to a modification method for modifying a biaxially oriented pipe, comprising: a) providing a biaxially oriented pipe made by drawing a pipe made of a thermoplastic polymer composition in an axial direction and in a circumferential direction, b) placing an insert in an end portion of the pipe, wherein an outer circumference of the cross-section of the insert substantially matches an inner circumference of the cross-section of the pipe, and c) heating the end portion such that the end portion is axially contracted while the inner circumference of the cross-section of the end portion is substantially retained, to obtain a modified biaxially oriented pipe having a thickened end portion.)