Three-dimensional pipe bending is the method used to bend a pipe into an irregular shape. Three-dimensional bending is generally used to ensure that two different pipe sections can be joined properly, or an immovable obstacle can be avoided by the pipeline. Forming a section of pipe into a spiral is another application of three-dimensional pipe bending. Three-dimensional bending can involve the use of several different sets of dies and rollers. While the process may involve more steps than bending a section of pipe within a single plane, bending a pipe into a three-dimensional shape is not inherently complicated.

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