Century Group 
Century Group manufactures a variety of precast concrete catch basins, water control structures, security bollards and drum spill containment basins. Century, also manufactures precast concrete control room and security buildings.
SlipNOT® Metal Safety Flooring 
SlipNOT® manufactures slip resistant underground vault covers that can be applied to gas, electric, water and telephone frames, among others.SlipNOT® vault covers are approved and used by cities such as: Los Angeles, Seattle, New York, San Francisco, Portland and many more. SlipNOT® transforms existing manhole covers by coating existing material with our high friction surface.
Syracuse Castings
Syracuse Castings designs and manufactures cast iron manhole covers, steel drainage grates and access hatches for the construction and utility industries. We offer a complete line cast iron frames, drainage grates and manhole covers for all your project needs. Specifications and AutoCAD drawings available on our website.
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See also:
03 4100 - Non-Architectural Precast Concrete - typically structural elements
32 3400 - Prefabricated Bridges
Century Group
Century Group manufactures a variety of precast concrete catch basins, water control structures, security bollards and drum spill containment basins. Century, also manufactures precast concrete control room and security buildings.
SlipNOT® Metal Safety Flooring
SlipNOT® manufactures slip resistant underground vault covers that can be applied to gas, electric, water and telephone frames, among others.SlipNOT® vault covers are approved and used by cities such as: Los Angeles, Seattle, New York, San Francisco, Portland and many more. SlipNOT® transforms existing manhole covers by coating existing material with our high friction surface.
Syracuse Castings
Syracuse Castings designs and manufactures cast iron manhole covers, steel drainage grates and access hatches for the construction and utility industries. We offer a complete line cast iron frames, drainage grates and manhole covers for all your project needs. Specifications and AutoCAD drawings available on our website.