A method and apparatus for fitting pipe by creating a mock layout from a parts kit that can include adjustable components. Once the mock layout has been constructed and positioned as desired, a user can take precise measurements of the mock layout to construct the pipe weldment based on the lengths and angles of the mock layout, thus enabling a pipe fitter to construct a weldment to replace the mock layout with, thereby more easily constructing a weldment to fit within a desired location and orientation. The parts kit can include components having adjustable lengths and a plurality of adjustable and/or selectable angle portions.