WEIGHT CALCULATOR     Seamless / ERW Steel Tubes & Pipes   Outer Diameter (mm) Thickness (mm) Weight (kg/mtr)         Al Brass Tubes   Outer Diameter (mm) Thickness (mm) Weight (kg/mtr)          Copper Tubes   Outer Diameter (mm) Thickness (mm) Weight (kg/mtr)            Cuper Nickel Tubes Outer Diameter (mm) Thickness (mm) Weight (kg/mtr)