pipe inspection services; sewer line inspection services; sewer system monitoring services; assessing the condition of sewer lines; mapping sewer lines; computer analysis of videos of pipes, sewer lines, and sewer systems for condition assessment and mapping; engineering services in the field of sewer line inspection, assessment, defect mapping, and defect coding; engineering services for assessing the condition of sewer pipes, identifying pipe defects, coding pipe defects, and geographic inf...

Chemical Additives Used in the Manufacture of Concrete Pipe