diff --git a/item_transport.lua b/item_transport.lua
index ddf2a08..2b3025b 100644
--- a/item_transport.lua
+++ b/item_transport.lua
@@ -84,6 +84,7 @@ end)
 
 function pipeworks.break_tube(pos)
 	local node = minetest.get_node(pos)
+	if core.get_item_group(node.name, "tube") ~= 1 then return end
 	local meta = minetest.get_meta(pos)
 	meta:set_string("the_tube_was", minetest.serialize(node))
 	minetest.swap_node(pos, {name = "pipeworks:broken_tube_1"})
diff --git a/pipes.lua b/pipes.lua
index 45d5b8f..a2c620a 100644
--- a/pipes.lua
+++ b/pipes.lua
@@ -37,11 +37,11 @@ for index, connects in ipairs(cconnects) do
 	end
 	--]]
 
-	local pgroups = {snappy = 3, pipe = 1, not_in_creative_inventory = 1, dig_generic = 4, axey=1, handy=1, pickaxey=1}
+	local pgroups = {snappy = 3, pipe = 1, not_in_creative_inventory = 1, dig_generic = 4, axey = 1, handy = 1, pickaxey = 1}
 	local pipedesc = S("Pipe Segment").." "..dump(connects)
 
 	if #connects == 0 then
-		pgroups = {snappy = 3, tube = 1, dig_generic = 4, axey=1, handy=1, pickaxey=1}
+		pgroups = {snappy = 3, pipe = 1, dig_generic = 4, axey = 1, handy = 1, pickaxey = 1}
 		pipedesc = S("Pipe Segment")
 	end
 
@@ -77,7 +77,7 @@ for index, connects in ipairs(cconnects) do
 		},
 		groups = pgroups,
 		is_ground_content = false,
-		_mcl_hardness=0.8,
+		_mcl_hardness = 0.8,
 		_sound_def = {
 			key = "node_sound_metal_defaults",
 		},
@@ -95,7 +95,7 @@ for index, connects in ipairs(cconnects) do
 		pipenumber = index
 	})
 
-	local pgroups = {snappy = 3, pipe = 1, not_in_creative_inventory = 1, dig_generic = 4, axey=1, handy=1, pickaxey=1}
+	local pgroups = {snappy = 3, pipe = 1, not_in_creative_inventory = 1, dig_generic = 4, axey = 1, handy = 1, pickaxey = 1}
 
 	minetest.register_node("pipeworks:pipe_"..index.."_loaded", {
 		description = pipedesc,
@@ -115,7 +115,7 @@ for index, connects in ipairs(cconnects) do
 		},
 		groups = pgroups,
 		is_ground_content = false,
-		_mcl_hardness=0.8,
+		_mcl_hardness = 0.8,
 		_sound_def = {
 			key = "node_sound_metal_defaults",
 		},
diff --git a/tubes/pane_embedded_tube.lua b/tubes/pane_embedded_tube.lua
index 4bc1e83..5d78016 100644
--- a/tubes/pane_embedded_tube.lua
+++ b/tubes/pane_embedded_tube.lua
@@ -30,7 +30,7 @@ minetest.register_node("pipeworks:steel_pane_embedded_tube", {
 	collision_box = pane_box,
 	paramtype = "light",
 	paramtype2 = "facedir",
-	groups = {cracky=1, oddly_breakable_by_hand = 1, tubedevice = 1, dig_glass = 2, pickaxey=1, handy=1},
+	groups = {cracky=1, oddly_breakable_by_hand = 1, tubedevice = 1, tube = 1, dig_glass = 2, pickaxey=1, handy=1},
 	is_ground_content = false,
 	_mcl_hardness=0.8,
 	legacy_facedir_simple = true,
diff --git a/tubes/routing.lua b/tubes/routing.lua
index e0a90aa..b4f8aff 100644
--- a/tubes/routing.lua
+++ b/tubes/routing.lua
@@ -179,7 +179,7 @@ if pipeworks.enable_one_way_tube then
 		paramtype = "light",
 		node_box = {type = "fixed",
 			fixed = {{-1/2, -9/64, -9/64, 1/2, 9/64, 9/64}}},
-		groups = {snappy = 2, choppy = 2, oddly_breakable_by_hand = 2, tubedevice = 1, axey=1, handy=1, pickaxey=1},
+		groups = {snappy = 2, choppy = 2, oddly_breakable_by_hand = 2, tubedevice = 1, tube = 1, axey=1, handy=1, pickaxey=1},
 		is_ground_content = false,
 		_mcl_hardness=0.8,
 		_sound_def = {