Importing request for Structural Steels United Kingdom

Square tubes
3mm and 2mm width
1.5 x 1.5 inches = 38.1mm x38.1mm
1.5 x 1 inches = 38.1mm x 25.4
1 x 1 inches = 25.4 mm x 25.4mm
Height 20 foot = 6096 mm
Flat bar
Width 3mm
Width 4mm
Length = 1 inch = 25.4 mm
Height = 20 foot = 6096mm
If this is ok, please share wholesale price points?
And also this Corrugated Steel Sheet