The polyethylene pipes for sewer system are produced with a co-extrusion of the two layers. Ecopal pipes for sewer system are used from several years in Northern Europe and in the USA       « Versione Italiana HDPE corrugated pipes Company Quality and environment Products Presentation Conduits Drainages Sewage . Manholes Price-list Branches Art and culture News Contacts How to reach us Privacy Map and guide Restricted area Polyethylene pipes corrugated externally and plain internally for sewer system; Ecopal pipes are the high density polyethylene co-extruded twin-wall pipes  Advantages  Components and special fittings  Jointing with coupling Ecopal pipes outer diameter Ecopal pipes inner diameter Ecopal pipes SN 16 ECOPAL: GENERAL CHARACTERISTICS Ecopal is a high density polyethylene co-extruded twin-wall pipe, corrugated externally and plain internally, and is an advanced product which offers technical and economical advantages. Industrie Polieco - M.P.B. S.r.l. Structured polyethylene pipes for conduits, sewer and drainage systems Palbox Industriale S.p.A. Management and coordination ex-art. 2497 of Civil Code: Industrie Polieco-Mpb S.r.l. Polyethylene pipes for pressure system (water, gas and sewer system) Internet partner: Sigla.com [www.sigla.com]