pipe

// Pipe
// A tubular section or hollow cylinder, usually but not necessarily of circular cross-section, used mainly to convey substances that can flow

// Define constants
const pipeLength = 40
const pipeSmallDia = 10
const pipeLargeDia = 20
const thickness = 0.5

// Create the sketch to be revolved around the y-axis. Use the small diameter, large diameter, length, and thickness to define the sketch.
const part001 = startSketchOn('XY')
  |> startProfileAt([pipeLargeDia - (thickness / 2), 38], %)
  |> line([thickness, 0], %)
  |> line([0, -1], %)
  |> angledLineToX({
       angle: 60,
       to: pipeSmallDia + thickness
     }, %)
  |> line([0, -pipeLength], %)
  |> angledLineToX({
       angle: -60,
       to: pipeLargeDia + thickness
     }, %)
  |> line([0, -1], %)
  |> line([-thickness, 0], %)
  |> line([0, 1], %)
  |> angledLineToX({ angle: 120, to: pipeSmallDia }, %)
  |> line([0, pipeLength], %)
  |> angledLineToX({ angle: 60, to: pipeLargeDia }, %)
  |> close(%)
  |> revolve({ axis: 'y' }, %)