Showing results for 
Show  only  | Search instead for 
Did you mean: 

Tube and PIpe Overhaul

Tube and PIpe Overhaul

I’ve been using Inventor for the past 11 years or so but only in the last 2 I’ve started using Tube and Pipe on daily bases. I’ve reviewed almost every tutorial, video, blog, existing on the matter but still find there are a lot of bugs, and room for improvement so during the course of one week while doing my daily job I’ve decided to add all the little things that got in the way of being more productive. It took another week to get the images and animations and to prepare the document but I am sure that even for non Tube and Pipe users this will make sense and cast a vote.

I am not sure if it was better to split all these ideas into separate posts or keep it as one. I think that some of the requests have been mentioned before so I apologise for that but I thought to keep it all together hopping to rather get a general overhaul of the Tube and Pipe environment so please vote for it even if they seem duplicate (add links to other posts so we can vote them there as well, please).

In no particular order here they are:


1 - If you don’t populate the route it can be really hard to place fittings. It doesn’t snap to nodes. Need to increase the snap influence area (or make the nodes bigger) so you can drop parts without populating the routes because this affects performance especially on large assemblies where we don’t populate until the very end. In the first part of the animation I am trying to place while in route only (or an unpopulated route) and it fails while with “populated” / ”display all objects” it’s really easy to drop fittings. Glyph and node custom size value needs implementing (nodes, arrows, etc), in T&P settings (template file) or even better in Inventor Settings customizable per user. I’ve seen a lot of requests from users of FEA and other modules as well for this.




2 - Possibility to increase the arrow sizes (glyph) when routing or rotating in T&P settings (template file) or even better in Inventor Settings customizable per user. I hold the mouse over the arrow direction while typing an angle and I constantly need to increase the size to make sure the mouse doesn’t run away and that it stays on the arrow.


3 - While in route you can’t delete multiple work features in Included Geometry, and you need to select and delete each one individually. This is very time consuming, and we need to be able to use delete on selected items.




4 - When inserting a node into a route the newly created segments should try and maintain (copy maybe) the original segment’s constraints and dimensions. We only need to dimension the position of the newly inserted node in regard to existing geometry. Fully constrained sketches go crazy when inserting a single node, removing existing constraints and deleting dimensions in the process as well.




5 - When placing fittings you get a rotation dialog but no “edit connection” or “change size” dialog. While in rotation mode an edit connection / change size should be available in the right click menu. You now need to start each command separately; you finish placing, select fitting, edit connection, select the fitting, change size, select fitting again, and so on in way too many steps. When you finish the Edit Connection /Change Size it should revert back to rotation mode dialog. I place similar fittings from adjacent runs because it’s easy but most of the time they are of different size and they need a different connecting dimension.




6 - Not all commands have shortcut keys or can be assigned keys to them. I don’t use the ribbon, and we all like the keyboard shortcut keys so please have them all available. Some things I will mention: edit fitting orientation, edit fitting connections, change fitting diameter, restore fitting, finish route (read bellow on why go to parent CTRL+ENTER is not working) etc. All these commands are only available from the right click menu or ribbon making it time consuming to use.




7 - Included geometry inside routes (planes, points) should have visibility off as soon as you exit the route. I haven’t found anyone that needs those visible once outside the route. You certainly don’t use them for “include geometry” in other routes. Turning the visibility from visibility menu / object visibility is not an option especially for large assemblies; we need proper off for each and every, not needing to manually change their state. I would not complain if you could turn multiple features off instead of one at a time as mentioned down bellow but even better turn them off automatically and let us turn them on if we want/need to once outside the routes.




8 - Branches are an absolute must, tees or not. If the user doesn’t specifies a tee family in the style library (need to add a tee selection menu there) then pipes would intersect to simulate a welded connection. Notches in the larger pipe diameter should be added automatically if user settings “notch matching branches” in style selected, just like in the branch fitting author dialog. I’ve never used a cross (too expensive, company standard to avoid them) so I can’t advice on those but on tees if you have three lines with end points coincident, two of them collinear and third perpendicular (or 45 for Y) then that’s a tee connection. At least give us the option to connect them and manually place the tee, right now it complains about branches not being allowed, so you can’t connect nodes. My work around is to dimension nodes at a distance but the sketch is not fully constrained and the route segment can jump since more than one solution exists. This is how it needs to work:




9 - All routes need to be constrained and grounded at T&P origin to stop them from flying around. What’s the reason for not having it this way? Fittings inside the runs get connected around but the run itself never gets constrained, or moved around, individual routes are constrained by using include geometry. If needed the ground should be available to manually remove. Currently I am manually constraining the Tube and Pipe assembly and all the runs in it because if you move it by just a bit you’re pulling your hair wondering why it’s skewed.




10 - When placing from content center the fittings default size selection should be the last used size, instead of defaulting to first item in the list every time. This way when you start placing fittings you only choose size first time, and the rest should follow. Different route? Different size? Then change size first placed item and the rest should follow again. I was going to suggest using the run size for each content center placed fitting but each run can have multiple routes each with its own size.




11 - Allow multiple T&P assemblies to exist and to be editable in the same assembly. Each assembly can have only one Tube and Pipe subassembly, editable at one time, if you need to edit an assembly with multiple skids or multiple layouts (more than one T&P) assembly you can't at the moment.




12 - When equipment moves (defer update, or changed outside main assembly) the routes go into “violation” mode where they turn pink, and all components of the route have visibility off. At this point the route is partially blocked for editing, you can delete constraints or segments but you can’t start a route in a different point or most important can’t insert nodes. I insert nodes to change direction, orientation and brake and fix routes but I need to do it before moving equipment predicting what might go wrong, or use undo, redo to bounce back and forward predicting how the change might affect the route. Deleting segments is not an option because the end points of the segments might hold fittings that get deleted in the process and need re-placing.




13 - T&P equipment should change size dynamically. Each Content Center fitting (pipe, elbows, tees, etc.) should get the size from the previously item populated. If I drop a reducer in the line the rest of the fittings and segments items should change automatically (Prompt the user if he wants to change, the rest of the elements along the route). The limitation here would be that it works with Content Center and iparts only, not individual authored fittings, because they don’t have a family table to feed from so they will not change as the rest (they can’t). This is how it needs to work:




14 - Stop routes from jumping while dragging nodes. The only way to check if a route is fully constrained and movable segments is to drag random nodes and see if they are moving. Sometimes more than one solution error occurs when the route jumps on either side of a dimension. Use negative/positive dimensions like with planes, or positive along origin indicators and negative in opposite direction, or lock the dimension in place and allow a flip option on a right click contextual menu. Sometimes a route is fully constrained but because of more than one solution on these dimensions it doesn’t report or change colour to fully constrained, or even worse, when changing dimensions you end up with overlapping and intersecting segments which goes into “Route Violation”.




15 - Pressing the “Return” or “Return to Parent” (CTRL+ENTER or CTRL+=) button will not exit the route environment, it will send you to 3D Sketch forcing you to press “CTRL+ENTER” again to exit route into run environment. Key shortcut for Finish Route is needed we don’t like to hunt for buttons on hidden menus ( I keep mine as Minimize to Tabs to increase display area). Sometimes when exiting the environment by using CTRL+ENTER twice doesn’t restore the visibility of the route components to on, so you need to select them all and turn them visible or edit the route and exit with the “finish route” button on the ribbon.




16 - Multiple selection working commands. We need to be able to run regular commands on a selection set because right now you need to select each and every component to do stuff like: change size, edit fitting connection (to increase gap distance), make adaptive, etc.


17 - Content Center pipes need re-authoring and ipart template should be set to “Participate in Assembly and Drawing Sections”. I’ve never wanted a pipe to run outside the section view but if I do I can turn off section participant for those ones. This needs to come in Inventor as default, not needing to republish standard CC libraries.




18 - Tube and Pipe Content Center items don’t get the properties specified in the Content Center family template. I get no part number and no description all the time. Make it work like steel shapes, I am not getting Description or Part number from Content Center Pipes and Spools.




19 - Include Route Centrelines in the drawing should show centreline for visible items only (use browser view to check which ones are visible). It’s showing for the whole Runs ending up with a lot of lines for which you need to turn visibility off, one by one.




20 - Manually changed pipes and fittings should stay that size when Style Size changes, because this changes everything including your manual changed elements. If you decide to change style (size of the routes) then a warning should pup-up asking for confirmation: “Sizes of some elements were manually changed. Do you want to update all? YES/NO/CANCEL”




21 - Changing size of multiple CC items has been approved, see here: We need same ability for Pipes; if you select multiple pipes (in fact multiple items altogether, fittings and pipes) you should be able to use change size to modify them all as long as the families have same values for ND (or whatever they main key parameter is). If the only way of programming this into Inventor is by having same name for the key parameter on all T&P families (ND or whatever Autodesk decides) then I am ready to modify all my custom families in order to get this functionality going.




22 - Last used Content Center family in Change Size should be cached in memory; it takes forever for the family size menu to show up again even if you just used it.




23 - Can’t dynamically dimension using parameter names. When entering dimensions for route segments you can only type numerical value to start the dimension dialog, then you need to delete the value and you can type a parameter name but the dimension is changed back to a fixed value instead of being “parameter=dimension”. It seems to copy the value of the parameter like “d22=30mm” instead assigning the parameter to the dimension like “d22=vb”. I import parameters from xml for each style/size so while dimensioning I use items like “vb” (valve ball), or gp (gap), or “e” (tee and elbow)  to dimension distance between nodes based on what goes into that node ,ball valve, tee, elbow, etc.




24 - Constraints are not always visible for nodes. In the next image the node is coincident with the blue segment (extension of “fx:132”), and I can’t remove this constraint. ON/OFF switching of show constraints doesn’t fix it. Notice that 3D/Move Rotate is missing in the contextual menu because of the constraint being present but I can’t select it and delete it.




25 - Need to be able to change orientation plane for multiple dimensions while in isometric view. Right now you dimension, right click, Annotation Plane, Show All Part Work Planes, choose a different plane, click to place dimension (“spacebar” is not always working, see below). We need to be able to select multiple dimensions, and change orientation plane for all at same time.




26 - Need to be able to do Chain Dimension for isometric views with option for Annotation Plane. Right now we need to manually dimension each route segment and choose annotation (“spacebar not always working, see below) plane which is very time-consuming.




27 - Make “SPACEBAR” work all the time for quick changing annotation plane while dimensioning Isometric drawings. Next I am showing how it’s meant to work and that sometimes it’s not and you need to manually specify work plane annotation. It’s not always working while selecting segments; you need to play with selecting segment end points.




 28 - Exit without saving still saves changes. If you use change size on pipes and then you close without saving it still saves the file, even if you shut down inventor to clear its cache memory and start a new session, the changes are persistent.




 29 - Decrease the length of the generated files and folders for any design accelerator, tube and pipe, frame generator, FEA items. It’s so easy to pass the 256 accepted characters in Microsoft Windows and you end up with all sort of problems, like unable to access and recover parts.




The next one I can’t reproduce, I've been having it but I can’t seem to be able to get it again, so if anyone has seen this and has a case at hand please add it in the comments bellow.


30 - While moving equipment around some routes go into “Violation” mode and the only option is to CANCEL the command which will undo your work, and to edit the route braking constraints or deleting dimensions first. This is somehow related and really a continuation of the first one, so even if the route goes into “violation” the operation should be permitted to finalize and let the user change the route manually later in order to fix it.





I have been recording a worksession for another purpose, but doing a lot of tube & pipe work in the session.  I am more than tempted to edit the resulting video to demonstrate some of the hardships we run into on a daily basis with T&P.  Example not on your list.  Sometimes (in my industry all the time), we have pipe runs that have no pipe segments, only fittings.  In this situation there are many headaches such as:


  1. To move one fitting over just a tiny amount... all connections in the run must be broken, the fitting moved, and then all connections manually reestablished... with some fittings spontaneously rotating during the process.
  2. How in the... do you get a run that is mostly fitting to fitting to line up perfectly with a piece of equipment that is constrained at the top level of the assembly.  If the fittings are off by even .00001, any route will become a pretzel as inventor tries to make it line up.

I have many more as you all know.  I would almost suggest a summit to discuss ideas for a long overdue remodel of this module.  This is stuff that cannot be done in either Fusion or Plant 3D... we need Tube & Pipe... and we need it to work.


Thank you!


Your loyal customer!


To illustrate one point I made above with the fitting to fitting madness...


The pump in this video is constrained with an axis mate, to the elbow on this route.  Centerlines SHOULD be right on target in both direction.  The "Z" dimension is irrelevant as long as it does not violate minimum segment rules.  Watch this:



Great Job on documententing this.  ADESK needs to listen to the users that use this on a daily basis if they want to be serious about T&P.


(rant alert)


The last 24 hours with tube & pipe have got me seriously thinking about my future in this business.  No one needs this level of frustration in their life.


(rant over)


Holy mother of all ideas Batman!  This is going to take some time to digest.  Masterful presentation salariua.  Is there any chance this can be broken into separate ideas?  As it is documented, there is no way for members to designate which Idea has more weight than the other (or which Inventor Engineering should do first).  As it stands we will treat this as a "Update T&P idea" and chip away at what we can when we can.  However community member kudos do play a heavy role in what we eventually implement.  The IdeaStation limits the number of posts you can author so my request for you to separate it may take some time (gratefully & respectfully understanding the amount of time you have already put into this).  You can imagine the comments within this idea will quickly and easily get out of control given there are 30 ideas in here.  As the author of the Idea you should be able to remove items from this Idea as they get authored separately.  Thank you for your consideration and for your thoughtful content.  -Dan

Status changed to: Under Review



Thank you for taking the time and reviewing this, but as mentioned before we are not aiming to get patches, fixes, and workarounds.


We need you guys to take your time and do a full rebuild. Get all the posts on the idea station on Tube and Pipe (cbenner's especially) and rebuild this module.


No idea has more weight than the other, they are equally important and so we don't want to split them into separate posts.


if there is a limit on the number of replies here then we will continue the discussion on the general forum:


Looking forward to seeing this "Accepted" and "Implemented".







I'll give you one more idea:


31 - make the 3D orthogonal route tool from Tube and Pipe, generally available in 3d sketches. Countless times I've created routes and used them as skeletons for Frame Generator.


Nothing is "free" - a full rebuild of T&P could very well result in breaking compatibility with existing content.  Would that be acceptable?




The whole CAD industry needs a rebuild if you ask me, at least for getting Multi-Core, Multi-Thread operations.

What we don't want in this case is patches, fixes and temporary solutions. I can't be having Inventor saving files when I told him not to.


Thanks for voting.

Not applicable

The OP should get a lifetime backstage pass to the Autodesk programer's cafeteria and boardroom. 

(fake english_accent) Quite impressive, dear chap. Quite. (/fake)

Not applicable

Bravo! I am a one-man standing ovation at this moment. Excellent posting! 

Designing and detailing piping systems is not an incedental job for many of us, it is our primary work focus.  There is much potential in Inventor T&P, but much if it is poorly implemented, possibly because the software engineers programming it don't fully understand how piping designers need to work. I hope Autodesk will take this posting *very* seriously, as well as those by cbenner, and bring this program to its fiull potential.


I am loosing a marble.


32 - If you select an existing component and use place fitting to place it again "Change  Fitting Diameter" becomes inactive. You can get it active by using Change Size, You don't need to actually change size just click ok in the window and "Change  Fitting Diameter" becomes available.


150313 Change Fitting Diameter 3.gif


33 - Why isn't "Delete" key working on components and you need to right click select Delete to remove fittings. This is standard in AIP except T&P. And why can't you delete more than one component like standard AIP.




34 - Make "Repeat last command" available for all commands. I use space (or enter) to repeat last command (just like Autocad) but it's not seeing all commands used, THE MOST IMPORTANT ONES i will say:  "Edit Fitting Orientation", " Change Fitting Diameter", "Edit Fitting Connections". etc. It's like these were never used.




35 - Prevent fittings from changing orientation when doing operations like "Change Fitting Diameter". @cbenner has reported this before.




36 - Fix default focus on "Connect Fitting" to "OK" so I can press ENTER to accept the way CANCEL revokes the command at any time just like in all the other commands. I don't want to hunt with the mouse but press my ENTER or ESCAPE  thumb buttons on the mouse to finalize the command. Being a bit picky here, but it's all about productivity. Please check other commands as well, don't wait for us to report them one by one.















You do realize that you are in effect spamming/techno-barfing on your own thread, right?  Trying to get past several dozen sample movies makes it difficult to get to any new content and comments, let alone other idea posts.  There are so many different ideas now, there's no telling who is up-voting for which one and it's not a good idea to assume every vote is for every idea.


It can't be that bad though, as I am posting here, right?  Well, I feel making the point is important enough to go through the effort.


 @dgorsman ,


What I don’t want is to have these waiting for votes lurking over the years and resolved as someone sees fit based on the votes, complexity and personal preference.

This needs to be addressed as a whole, we are just pointing out the current state of the TP module. I understand that not all voters will agree/use some of the items mentioned but really a lot of the issues are just bugs and can’t be posted on the Idea Station.

As the title suggests, we need full time commitment and a general update, hopping to get more than what’s been posted here. Take your time and develop this module, don’t just fix the issues pointed out, review what others are doing, do customer surveys, brainstorm sessions or whatever you guys need to get us back on track with the rest of Inventor and the market in general.


Meanwhile, wait for 37.


@dgorsman & @salariua 


The Idea Categories would come in handy for this specific situation, and not only.

It will make voting and filing the ideas by Autodesk developers easier.

See this link:


I am a potential user of the "Cable and Harness" environment which is probably working in a similar fashion with the "Tube and Pipe".


Have a nice day,



Sure enough 37 came along but so did 38 and 39.


37 – Allow self intersecting routes to populate. Give us an option to accept or cancel when the warning occurs. As you can see, in the end the route will not self-intersect but I am forced to edit dimensions several times in order to complete this (waste of time).




38 – “Change Fitting Diameter” on components that are not iparts or CC items will restore the original fitting and increase its size. If a part Diameter cannot be changed then ignore it and don’t change it.




39 – Give us a “Match Properties” function like the one in the drawing for “Copy Dimension Properties”. On the same principle if you right click when the command is active you get a “Settings” menu where you can choose what to copy: Material, Appearance, Orientation, Diameter, Connection (distances). The Orientation (rotation) is going to be the hardest but I suggest using connection 1 (they all have at least 1 connection) as the rotation axis and Z axis as direction.

Can't find what you're looking for? Ask the community or share your knowledge.

Submit Idea  

Autodesk Customer Advisory Groups

Autodesk Design & Make Report