Material Flow Between Work Centres (Graphviz)

digraph material_flow {
  rankdir=LR;
  graph [fontname="Inter", labelloc="t", label="Material flow - trips per day and metres travelled"];
  node [fontname="Inter", shape=box, style="rounded,filled", fillcolor="#ecfdf5"];
  edge [fontname="Inter", fontsize=10];

  goodsin [label="Goods in"];
  store   [label="Raw store", shape=cylinder];
  saw     [label="Saw cell"];
  cnc     [label="CNC cell"];
  weld    [label="Weld cell"];
  paint   [label="Paint line"];
  wip     [label="WIP buffer", shape=cylinder, fillcolor="#fef9c3"];
  assy    [label="Assembly"];
  test    [label="Test rig"];
  pack    [label="Pack and dispatch"];

  goodsin -> store [label="18 trips / 40 m"];
  store -> saw [label="24 trips / 65 m"];
  saw -> cnc [label="24 trips / 30 m"];
  cnc -> wip [label="31 trips / 110 m", color="#dc2626", penwidth=2];
  wip -> weld [label="31 trips / 95 m", color="#dc2626", penwidth=2];
  weld -> paint [label="19 trips / 55 m"];
  paint -> wip [label="19 trips / 120 m", color="#dc2626", penwidth=2];
  wip -> assy [label="26 trips / 70 m"];
  assy -> test [label="26 trips / 12 m"];
  test -> assy [label="4 trips / 12 m rework", style=dashed];
  test -> pack [label="22 trips / 25 m"];
}