Productions Standards:
The Gulta steel tubes are produced according to different types of standards, namely:
BS EN 10315-3, 10315-5 Steel Tubes for precision applications.
BS EN 10219-2 for Cold formed welded structural hollow sections of non-alloy. 
Productions Range for Square tube (dimension of specified side): Between 15x15 mm - 120x120 mm.
Wall thickness (T): Between 0.8 – 6 mm. 
Length: The standard Length 6 m, but it's can be between 3.0 m - 12.0 m depends on costumer's Needs, considering the standard tolerance for the length Passed on the failed applications.
Steel Grade: S235, S275.
We can supplied the Steel Tubes Galvanized according to ISO 1461. Maybe there is other shapes are not showing such as: (D-Tubes, Oval Tubes)the company can produce. For more details download the attachment file. For custom sizes and/or applications or any other general enquiry please contact the Sales Team by visiting the Contact us page.