Join post pipes

[seven01]

Hello

I was thinking of extending some existing pole tubes (60mm) and wonder if anyone knows the best way to do it?
Is there a joint you can buy maybe...

 

[D09]

A slightly minimally narrower one that you thread in and then a 60 on top like an inner part that holds them together? Now I was probably vague 🤔

 

[pelpet]

Buy more of the same pipe dimension that you have, and short stumps of pipes with the same outer diameter as the existing pipes' inner diameter. Insert the stumps into the existing posts and slide on the extension pieces. If you are serious, weld the joints.

 

[seven01]

Then I will try to find a pipe that fits the current one. However, I have zero knowledge of welding, so I don't really understand how I'm going to manage to weld the joints inside the pipe?!
Maybe it should be possible to drill through and use bolts as well?

 

[Micro]

If you have a small gap of a few millimeters between the outer tubes, the inner tube will automatically be welded if you weld at the seam.
You can also drill a few holes in the outer tubes and weld the inner one by filling the holes.
Note! You must drill the holes first before inserting the inner tube.

 

[toolman77]

If you cannot find pipes with a suitable inner diameter, you can take parts of pipes of the same size and split them lengthwise. You can then press them together to the right size so that they fit inside the pipe. Not as neat but works.

You weld from the outside. Let the pipes gap a few mm at the joint and fill with weld seam. Remove the excess with an angle grinder and paint.

 

[seven01]

Ah then I'm with you. Thanks for the tips

 

[D09]

Or long tubes with an inner diameter matching your current outer. Then thread straight across and down to the bottom. Should hold together without welding etc., but you will need to drill new holes for the fence.

 

[thomas33]

There are joint pipes for 60mm pipes, for road sign posts!
http://www.ata.se/eshop/vagledning/...soler-och-skarvdon/expanderande_skarvdon.aspx

 

[seven01]

Hello again...

I thought I would give a little update and I have some questions...

I chose to buy pipes in a larger dimension where the difference between the existing pipes' outer dimension and the new pipes' inner dimension is about 7mm. This, in turn, allows the pipes to move slightly, which I would like to stabilize. I have drilled through holes through both pipes and attached the support line with carriage bolts.

Does anyone have any good and simple tips on how I should do this?

Another question is what to do about condensation and ice. The existing pipes go through the foundation down into the ground, so there hasn't been a risk of ice causing problems before. Now there is a risk of condensation between the pipes. I am thinking of putting a cap on the pipes but I'm not sure if that will fix the whole issue. Drilling a hole at the bottom of the existing pipes could help to drain water a bit.
Does anyone have any ideas?

 

[holmberg87]

Condensation and ice are probably nothing you need to worry about. Just put a cap or plug on the pipe. That's what I've done, and it's been fine.
If you want to make the gap stable, you'll have to weld or pull through from different directions.
But if you want it stable in a simple way, you should have chosen tighter pipes.

How are your joints? All the way down to the ground?

 

[daugaard]

Drill and tap the outer tube, insert a screw that presses against the inner tube.

 

[daugaard]

or fill the pipes with cement

 

[seven01]

Condensation and ice are probably nothing you need to worry about. Just put a hat or cap on the pipe. That's what I did and it worked out fine.
If you want that gap stable, you need to weld or run through from different angles.
But if you want it stable in a simple way, you should have chosen tighter pipes..

How did you connect the joints? All the way down to the ground?

Unfortunately, those were the tightest pipes I could find :/
Yes, connected all the way to the ground, it looked half-suspicious if I left a gap, I thought.

 

[seven01]

or fill the pipes with cement

That was a good tip. Me and mixing cement may not have the best of relationships but definitely an option. Also the threading