Silicon carbide foam pigs are used for cleaning lines with high-level hardness buildup as well as rust and mill scale. The abrasive compound can be in loose grit form or in a heavy-duty strap. Models are available in light, medium, and heavy density foam. The pigs are constructed from an open-cell polyurethane foam with a durable polyurethane elastomer coating in a criss-cross pattern and silicon carbide material in loose grit or strap form.
