Unplasticized poly(vinyl chloride) pipes with a foam-core wall are manufactured in accordance with the EN 13476-2 standard in diameters DN160-400. Our products are manufactured in diameters DN160-DN400. PVC-U pipes with a foam core in stiffnesses SN2 - SDR 51, SN4 - SDR41, SN8 - SDR34. Such pipes are intended for use in non-pressure underground drainage and sewage systems laid in the ground in roadways (under the road or off the road) or other areas used for traffic engineering purposes, for shielding other pipes and passages through road embankments, drainage of bridge constructions above the road. Pipes with extended socket can be used in areas affected by mining activities.