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.