PMA LINER

Building materials for manhole sanitary and wastewater collection systems, namely, plastic pipe supports, drainage conduit manhole rings made of precast concrete featuring a plastic element, plastic drainage conduit, rigid pipes not of metal for constructing manhole liner systems, drain pipes not of metal, manhole base liners not of metal, manhole covers being manhole base covers not of metal, connection bells not of metal being drain traps for attachment to sewer pipes, infiltration chambers not of metal, namely, storm water retaining chambers