specification Outside diameter Mm Wall thickness Mm Minimum wall thickness mm Welded pipe (6 meters long) Galvanized pipe (6 meters long) Nominal inside diameter Inch meters in weight kg Root weight in kilograms in kilograms kg Root weight in kg DN15 1/2 4 points in 1.3 1.8 1.45 DN20 3/4 in 6 points 1.9 1.8 1.45 1.66 1.96 1.76 1.56 DN25 1 1.7 1.2 1.8 1.41 1.46 1.554 1.32 DN32 1.25 1.4 1.5 1.06 1.36 1.16 1.56 1.36 DN40 1.5 1.3 1.5 1.06 1.87 1.22 1.1 1.6 DN50 2 1.3 1.8 1.325 1.29 1.74 1.607 1.64 DN65 1.5 1.1 1 1.5 1.11 1.66 1.536 1.21 DN80 3 1.9 1 1.38 1.28 1.88 1.28 DN100 4 1.3 1 1.88 1.28 1.53 1.18 DN125 5 140 1.5 1.04 1.24 1.942 1.65 DN150 6 1.3 1.5 1.18 1.08 1.27 1.62 DN200 8 1.1 1.0 Weld pipe 1.53 1.18 DN200 8 1.1 1.5 Hot zinc 1.12 1.7 Galvanized steel pipe nominal diameter, outer diameter, wall thickness and theoretical weight comparison table