FIELD: laminated products or materials.
SUBSTANCE: group of inventions relates to liner material for a pipeline and to a pipe lining method. Lining material is turned inside out to line pipe P. Lining material 1 includes: airtight layer 3; main lining body 2 that is positioned inside said airtight layer 3. Main lining body 2 is converted into a tubular shape by rolling sheet of base material 10 such that both of its circumferential-direction edges overlap; and tubular element 8 located inside main lining body 2. Method of lining a pipe having a curved portion includes impregnating the lining material and then inverting it.
EFFECT: technical result of the group of inventions is to prevent material installed in a pipe from peeling off on both overlapping peripheral end portions (formed by overlapping areas).
10 cl, 17 dwg
