NOMINAL SIZEX,Y (mm) THEORETICAL WEIGHTS IN KG/M (WALL THICKNESS IN mm) 0.7 0.8 1.0 1.2 1.5 1.8 2.0 3.0 12x12 0.264 0.301 0.377 0.452 0.565 0.678 0.754 16x16 0.352 0.402 0.502 0.603 0.754 0.904 1.005 20x20 0.440 0.502 0.628 0.754 0.942 1.130 1.256 25x25 0.550 0.628 0.785 0.942 1.178 1.413 1.570 30x30 0.659 0.754 0.942 1.130 1.413 1.696 1.884 40x40 1.256 1.507 1.884 2.261 2.512 3.768 50x50 1.570 1.884 2.355 2.826 3.140 4.710 60x60 1.884 2.261 2.826 3.391 3.768 5.652 70x70 2.198 2.638 3.297 3.956 4.396 6.594 75x75 2.82 3.533 4.239 4.710 7.065 80x80 3.014 3.768 4.522 5.024 7.536
SQUARE TUBES