Ductile Iron Double Triangular Manhole Cover and frame
: Inverted vee seatings combine with three point suspension to
provide cover stability under load and to discourage abrasive
material from becoming trapped under the bearing points.
: Designated to be used in Government roadway drainage
projects and maintenance projects.
: For Storm Water (with circumscribed raised stubs on the cover)
For Foul Water (with rectangular raised stubs on the cover)
Test details of ductile iron manhole cover and frame
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