6
Structures and constructions for drainage and for soil consolidation, frames, elements and netting of metal for drainage, soil consolidation and/or grassing of soil; Drainage pipes of metal and Valves made of metal for drainage
17
Materials and products in polypropylene and PVC for industrial, technical, building, engineering, plumbing and environmental purposes, for drainage, geotechnical engineering, landfill and for gardening and landscape gardening; Semi-processed plastic materials, in the form of bands or sheets, for heat and sound insulation; Insulators and insulating materials; Insulating buildings against moisture (Substances for -); Insulating fabrics; Insulating paints; Fibreglass fabrics for insulation; Drainage tubes of plastic; Netting, mats and mattresses of fibre or artificial fabric, for drainage, soil consolidation and/or grassing of soil; Pipes of plastic for injections and structures and soil consolidation
19
Materials not made of metal for industrial, technical, building, engineering, plumbing and environmental purposes, for drainage, geotechnical engineering, landfill and for gardening and landscape gardening; Structures and constructions for drainage and soil consolidation; Frames, elements, meshing, mats and mattresses of fibre or natural fabric and/or artificial fabric for drainage, soil consolidation and/or grassing of soil; Anti-erosion matting for covering river beds and banks; Anti-erosion matting for providing a grassy covering for river beds and banks; Sound-protective barriers, support walls and elements for the construction of the aforesaid; Cement in liquid or powder form for hardening and consolidating soil