Profile: KST CPL Holland specializes in providing concrete pipe linings. Our concrete products include concrete pipes, concrete manholes, concrete tanks, concrete tunnels, concrete sewage storage basins, concrete grease traps and other concrete structures & products. T-Grip™ plastic sheet is a T-ribbed membranes that is flat on one side, whilst the reverse side contains parallel T-shaped ribs. These ribs are cast into concrete at the new construction stage. Thus isolating the concrete from the harmful effects of corrosive chemicals.