Both truck-mounted boom pumps and stationary (trailer or skid-mounted) line pumps are generally classified as concrete pumps under this heading, as the classification is based on the function of conveying concrete rather than the mounting configuration. However, if a truck-mounted unit is classified as a complete vehicle with the pump as an integral component, the classification of the whole article may differ — a customs broker should review the specific configuration.

Wear parts such as delivery cylinders, S-valves, spectacle plates, cutting rings, and pipeline sections are high-turnover trade items for concrete pump operators. These components are typically classified under parts headings rather than under the concrete pump heading itself, so importers should verify the correct classification for replacement parts orders.