Pigs Unlimited International, Inc. is dedicated to serving the pipeline industry by solving the pigging needs of our customers. Since their conception, pigs have been cleaning pipelines in the oil and gas industry for well over one hundred years years. Now, pigs have branched into other industries, such as municipalities, power plants, mining, refineries, chemical plants, pulp and paper mills, food and beverage, cosmetic and pharmaceutical. Also, over the years pigs have evolved from basic "plugs" to being fairly sophisticated pipeline cleaning devices. Standard sizes range from 2" to 48” (but larger sizes can easily be designed and manufactured), and they can be manufactured in varying lengths, diameters, styles and configurations to best suit the customer's application.