Our square tubes are made of aluminium alloy (AlMgSi0.5/EN AW-6060) with mill finish. These box section tubes can be easily machined, welded (by TIG or MIG welding technique), anodised and coated. Delivery includes 6 aluminium tubes (each with a length of 197 cm). You can also cut the aluminium bars to your desired length. Note 1): The hollow tubes are sharp-edged; please open the package carefully and wear protective gloves if necessary.Note 2): There might be small scratches on the surface of the aluminium rods, which is normal for this type of products.