Minimum tube bend radius3/3/2024 Double the CLR to calculate the centerline diameter (CLD), the distance from the tube or pipe centerline axis across to the other centerline of a 180-degree return bend. ![]() As a rule, the tightest achievable CLR is one times the pipe or tube diameter. Next is the centerline radius (CLR), which runs along the centerline of the pipe or tube to be bent. The first core vital is the degree of bend (DOB), or the angle to which the bend is formed. Factors such as the material type, the end use, and the estimated annual usage directly impact the manufacturing processes, the costs involved, and the delivery lead time. Some core vitals help determine the scope of a tube or pipe bending project. And like any other manufacturing discipline, efficient tube bending starts with the core vitals, the fundamental concepts that form the foundation of any project. To achieve the desired results requires good equipment and, especially, the right expertise. Be it for structural components, mobile medical equipment, frames for all-terrain or utility vehicles, or even metal safety bars in bathrooms, each project is different. The clamp die (at the right) guides the tube around the bend die to establish the angle.Īcross industries, the demand for complex tube and pipe bending continues unabated. The bend die (to the left) determines the radius. ![]() A mandrel is inserted into the tube’s inside diameter. A mandrel bending operation begins its cycle.
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