Turner manhole riser rings address a major dilemma facing today’s street maintenance departments by raising manhole castings to grade quickly and inexpensively, yet permanently. Can be installed in ...
Pro-Ring manhole and catch basin grade adjustment system is manufactured from Expanded Polypropylene (EPP) which is renowned for its strength to weight ratio, durability, chemical resistance and long ...
Sealed bids will be received via the PennBid Program until 11:00 am, prevailing time August 18, 2015. This bid is for providing the Authority with manhole riser rings of the sizes indicated in the bid ...
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