Angles Size (mm) Thickness (mm) kg/metre 20 x 20 3 0.87 25 x 25 3 1.12   5 1.65   6 2.08 30 x 30 3 1.35   5 2.01   6 2.56 40 x 40 3 1.83   5 2.73   6 3.5 45 x 45 3 2.06   5 3.1   6 3.97 … Continue reading ANGLES