The urethane pipeline pigs are constructed from open-cell foam with a durable polyurethane elastomer coating in criss-cross pattern, and equipped with loose grit or strap silicon carbide. They are used for cleaning lines with buildup. The urethane pipeline pigs are available in 2, 5 and 8 pound per cubic foot density. Urethane foam pipeline pigs can be manufactured with various pig design options including double-dish, double-nose, pulling rope or cable, transmitter or pinger cavity, jetting bypass ports, magnets, and customized diameters, lengths, and other configurations for special pigging applications. A steel pig with abrasive brushes and blades may be needed for long term usage. For more on our products, visit our web site at www.pigsunlimited.com.