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Theoretical Weight Calculation

Square Welded Pipe/Tube Formula: (T: Thickness / W: Width / L: Length ) 
Weight (KG) = [4 x T(mm) x W(mm) – 4 x T(mm) x T(mm)] x Density (g/cm3) x 0.001 x L (M)
Rectangular Welded Pipe/Tube Formula: ( T: Thickness / W1: Width 1 / W2: Width 2 / L: Length) 
Weight (KG) = [2 x T(mm) x (W1(mm) + W2(mm)) – 4 x T(mm) x T(mm)] x Density (g/cm3) x 0.001 x L (M)
Flat Bar Formula: ( T: Thickness / W: Width / L: Length ) 
Weight (KG) = 0.001 x W (mm) x T (mm) x Density (g/cm3) x L (M)
Hexagon Bar Formula: ( I.D.: Inside Diameter / L: Length ) 
Weight (KG) = 0.000866 x I.D. (mm) x I.D. (mm) x Density (g/cm3) x L (M)
Square Bar Formula: ( W: Width / L: Length ) 
Weight (KG) = 0.001 x W (mm) x W (mm) x Density (g/cm3) x L (M)
Round Bar / Wire Rod Formula: ( O.D.: Outside Diameter / L: Length ) 
Weight (KG) = 0.0007854 x O.D. (mm) x O.D. (mm) x Density (g/cm3) x L (M)