data.raw.item["pump"].order = "b[pipe]-c[pump-1]"

data:extend(
{
  {
    type = "item",
    name = "bob-pump-2",
    icon = "__base__/graphics/icons/pump.png",
    flags = {"goes-to-quickbar"},
    subgroup = "energy-pipe-distribution",
    order = "b[pipe]-c[pump-2]",
    place_result = "bob-pump-2",
    stack_size = 50
  },
  {
    type = "item",
    name = "bob-pump-3",
    icon = "__base__/graphics/icons/pump.png",
    flags = {"goes-to-quickbar"},
    subgroup = "energy-pipe-distribution",
    order = "b[pipe]-c[pump-3]",
    place_result = "bob-pump-3",
    stack_size = 50
  },
  {
    type = "item",
    name = "bob-pump-4",
    icon = "__base__/graphics/icons/pump.png",
    flags = {"goes-to-quickbar"},
    subgroup = "energy-pipe-distribution",
    order = "b[pipe]-c[pump-4]",
    place_result = "bob-pump-4",
    stack_size = 50
  },
}
)

