Hi,

I have such a laminate telescope. The picture shows HEAVY DUTY and I have an ordinary one. This will probably be an emergency solution, but to be satisfied with the permanent assembly, I would prefer metal pipes with a diameter of 40-45mm.

in the park is the company elv, they produce galvanized posts for public lighting. the options have a lot. to choose.

michal

Otherwise, in Alfun in Sered, I have already bought aluminum pipes several times and I have always walked well. They were willing to advise and cut into the necessary debt.
They have 6m pieces of different diameters and you can also choose what can be inserted into each other.
They also have cuttings for a better price. But I've always been there in person.
I recommend. If you still need to.
OM2ALB Leo Trnava.

Fence posts, can be obtained in diameters of 38mm, 48mm, 58mm, 68mm, sometimes even 75 a 100mm.
They are usually plastic coated, but also galvanized.
They do not attack themselves telescopically, the intermediate piece must be rolled out of the sheet, at least 200mm in the overlap and screw the pipes.
If the adapter is fixed, just two M8 screws.

It is good to choose the columns of the column lengths, aspon 3m, thick-walled / corner /.
Thin in the wind, if they are pushed together at 8m usually bend, or break.

For planting in the ground, well drill motor drill with extension cord, 1,3m hlboka diera 250mm vyvrtana, sufficient as a base for 10m of those pipes.
As a foundation, it is good to use at least 75mm 1.5m thick-walled iron pipe, which is covered with a dry concrete mix, possibly when sprinkling, fill in layers with washed stones from the borehole, if they are at hand.
If it falls into clay soil, it is good to drill even deeper.
After that, the column is inserted into the pipe at the base, leveled with how many wooden ones and sprinkled with sand which knocks and finally watered, to sit completely.
The pins are removed and a concrete cap is made on top.
In case of a problem, the blend breaks and the column can be pulled out of the sand bed in that pipe.

Those fence posts, should be well chosen, sometimes they offer those pipes like that “papierove”, that they will bend during transport.
I bought columns at Moravsko Slezske dratovny AS. at BA they have a branch in Tomasov.
http://www.msdo.sk/pages/prehlrub.asp?cd=11&typ=c

The second option is, use armored pipes, what are used as cable shields, are available in vatsich elektrach, but the transport length is greater, as with fence posts and should be well coated, because even if they are galvanized, quickly rusty. The price is also significantly higher, as with fence posts. But the strength is much higher.