Calculo Peso Tubo

How to Calculate Tube Weight

The weight of a tube depends on its material, dimensions, and the density of the material. The basic formula for calculating tube weight involves these key factors:

• Material density (kg/m³)
• Outer diameter (mm)
• Wall thickness (mm)
• Length of the tube (m)

Using these parameters, you can calculate the weight of a tube by determining its volume and multiplying it by the material's density.

Tube Weight Formula

The formula calculates the volume of the tube's wall and then multiplies it by the material's density to get the weight in kilograms. The division by 4000 converts the result from cubic millimeters to cubic meters.

Worked Example

Let's calculate the weight of a steel tube with the following specifications:

• Outer Diameter: 50 mm
• Wall Thickness: 2 mm
• Length: 3 meters
• Material: Steel (Density = 7850 kg/m³)

First, calculate the inner diameter:

ID = OD - 2 × Wall Thickness = 50 - (2 × 2) = 46 mm

Now, apply the tube weight formula:

Tube Weight = (π × (50² - 46²) × 3 × 7850) / 4000

Calculating step by step:

1. 50² = 2500 mm²
2. 46² = 2116 mm²
3. 2500 - 2116 = 384 mm²
4. π × 384 = 1206.86 mm²
5. 1206.86 × 3 = 3620.57 mm²
6. 3620.57 × 7850 = 28,383,272.5 mm³
7. 28,383,272.5 / 4000 = 7095.82 kg

The calculated weight of the tube is approximately 7095.82 kg.