Tank with an inner and/or outer double-walled lining

Tank with a lining, comprising a tank wall and a double-walled lining adhering to the latter and comprising a double pile fabric which is reinforced by a curable impregnated resin and in which an upper and a lower fabric are connected so as to be spaced from one another by means of webs formed by pile threads, and with a sealing laminate ply, wherein the webs of the lining form, between the upper and the lower fabric, web walls extending linearly in one direction and consisting in each case of a multiplicity of pile threads arranged next to one another, and the web walls extend parallel to one another with small web heights of about 2.5 to about 3.5 mm and with web wall spacings, greater than these, of about 5 to about 8 mm, said curable impregnated resin embedding the webs to obtain substantially closed web walls along the linear arrangement of the pile threads which lie next to one another and, together with the upper and the lower fabric define individual cavity ducts.