Meltex double drainage pipes for drying foundations of buildings and land and field areas. SN8 strength class pipes are suitable for traffic areas, road construction, and other heavily loaded areas. Double drainage pipes are perforated either around or on the top and are double-layered, with a corrugated outer surface and a smooth inner surface. Meltex manufactures double drainage pipes according to the SFS 3453 standard, and they meet the quality requirements of RIL 128-2002. Double drainage pipes are made from durable polyethylene, and their length is 6m.