A clamp is a fastening device to hold or secure objects tightly together to prevent movement or separation through the application of inward pressure. Hangers and support provides the most accurate supporting loads for your pipe throughout the full range of movement, along with the simplest load adjustment.
A band clamp is a type of clamp that allows the clamping of items where the surfaces to be clamped are not parallel to each other, where there are multiple surfaces involved, or where clamping pressure is required from multiple directions at once.