Rhino USA of Oregon is a pioneer in rotationally molded high-density polyethylene (HDPE) manholes. The Rhino Manhole is specified for sewer, wastewater, landfill leachate, storm water collection systems, and below grade utility inspection chambers. Also Rhino Manholes are used for other subsurface applications.
With the ever-increasing use and specification of polyethylene pipe, Rhino USA of Oregon manholes provide a compatible and easily-adaptable alternative to traditional concrete and/or brick construction.
Rhino USA of Oregon HDPE manholes reduce installation hazards, time delays and costs normally associated with manhole installation – less manpower required to move, handle and install. Typically H.D.P.E. manholes will last up to 20 times as long as concrete in high acid and chemical environments.
Rhino Manholes are a lightweight yet structurally sound alternative; no need for heavy construction equipment, saves time and installation cost. Rhino Manholes are completely chemical and corrosion-resistant. Our manholes resist attack by hydrogen sulfide for decades. Each unit is designed and gasketed to be water-tight, while stopping infiltration and exfiltration. On our Manhole Components page you will find more useful reading, diagrams and information on the Rhino USA of Oregon HDPE product line.