Abstract: Shallow buried and lowland laid pipelines, on account of their greater encrgy loss, are better to be insulated with hard polyurethane (Its insulation efficiency gocs up to 86.3 %). The article deals with the methods as to measuring pipeline heat loss, mold-injected foam insulation, and the economic efficiency of such insulation. Here respectively related are the economical insulation thicknesi and selection for such insulation. Some oroblems in insulation construction are reviewed followed followed by correspondent solution proposed.