Lining Of Pipelines And Passageways

摘要

The invention relates to the formation of a tube ( 34 ) and the provision of the tube ( 34 ) to line a host pipe and hence repair and/or strengthen the same. The tube is formed of a web ( 10 ) of material to which at least one wire strip ( 18 ) is applied such that when the web ( 10 ) of material is introduced into the host pipe, the at least one wire strip is located at the overlapping longitudinal edges of the web ( 10 ). The tube ( 34 ) is expanded to the internal size of the host pipe and electric current applied to the wires in the wire strip ( 18 ) to heat the same and bond the overlapping edges together.