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5. Cleaning and Polishing After sufficient lapping, the surfaces are cleaned once again to remove any residual abrasive material. Polishing may also be applied to enhance the finish.

When we think of urban infrastructure, manholes are often overlooked yet play a crucial role in the functioning of our cities. They are essential access points to underground utilities, including sewer systems, water lines, and telecommunications. One of the key features that aid in accessing these underground systems is the manhole step.