Metal weight

Round tube 139.7×7.1 mm weight

Steel Round tube Ø139.7×7.1 weighs 23.22 kg/m. A 6 m bar weighs 139.3 kg and a 12 m bar 278.6 kg. Values are theoretical, for a density of 7.85 g/cm³.

Weight per metre23.22kg/m
6 m bar139.3kg
12 m bar278.6kg
Metres per tonne43.1m
Painting surface0.439m²/m
Ø 139.7 × 7.1 mm
Outside diameter
139.7 mm
Wall thickness
7.1 mm
Section area
29.58 cm²
Inside diameter
125.5 mm
Inch (approx.)
5″
Outer surface
0.439 m²/m
Internal volume
12.37 l/m
Outer surface
0.439 m²/m

Weight by length

LengthSteelStainless 304Aluminium
1 m23.22 kg23.45 kg7.99 kg
2 m46.44 kg46.91 kg15.97 kg
3 m69.65 kg70.36 kg23.96 kg
4 m92.87 kg93.82 kg31.94 kg
5 m116.09 kg117.27 kg39.93 kg
6 m139.31 kg140.73 kg47.91 kg
8 m185.74 kg187.64 kg63.89 kg
10 m232.18 kg234.54 kg79.86 kg
12 m278.61 kg281.45 kg95.83 kg

How it was calculated

The weight is the section area multiplied by the material density:

kg/m = (D − t) × t × 0.02466, where D is the outside diameter and t the wall thickness, in mm.

For Round tube Ø139.7×7.1, the section area is 29.58 cm², so 1 metre = 29.58 × 0.785 = 23.218 kg.

The real weight can differ by a few percent because of rolling tolerances. For other materials or lengths use the calculator.

Other round tube sizes

Round tube Ø139.7×2.6Round tube Ø139.7×2.9Round tube Ø139.7×3.2Round tube Ø139.7×3.6Round tube Ø139.7×4Round tube Ø139.7×4.5Round tube Ø139.7×5Round tube Ø139.7×5.6Round tube Ø139.7×6.3Round tube Ø139.7×7.1Round tube Ø139.7×8Round tube Ø139.7×10Round tube Ø139.7×12.5Round tube Ø60.3×7.1Round tube Ø76.1×7.1Round tube Ø88.9×7.1Round tube Ø101.6×7.1Round tube Ø108×7.1Round tube Ø114.3×7.1Round tube Ø133×7.1Round tube Ø159×7.1Round tube Ø168.3×7.1Round tube Ø193.7×7.1Round tube Ø219.1×7.1Full table →

Working out a whole order?

Add Round tube Ø139.7×7.1 to the materials list and see the total weight and cost of the order, together with the other products.

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Frequently asked questions

How much does one metre of Round tube Ø139.7×7.1 weigh?

One metre of steel Round tube Ø139.7×7.1 weighs 23.22 kg.

How much does a 6 m bar of Round tube Ø139.7×7.1 weigh?

A 6 m bar weighs 139.3 kg and a 12 m bar 278.6 kg.

How many metres of Round tube Ø139.7×7.1 are in one tonne?

One tonne contains about 43.1 metres.