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Settlement method

This method is not used very often, but it is the only one when the exact length of the pipeline at the stage of design engineering is not yet known, and it is necessary to determine the maximum possible load on the supports and steel structures. The input data for calculating the weight of rolled circular cross-section are:

Radius of the outer cross-section of the pipe R, mm;

The radius of the inner cross-section of the tube r, mm;

The length of the calculated section l of the copper pipeline, mm.

The relation, according to which the calculations are made, is as follows:

m = 3.14 (^R2 - ^r2)lρ,

where ρ = 8960 ^kg/m3 - steel density at room temperature.

The calculation of weight of one meter of non-circular steel pipes is carried out similarly, only instead of area of ring cross-section 3.14 (^R2 - ^r2) the area of hollow thin-walled rectangle 2t (B+H) is substituted, where t - thickness of pipe wall, H and B - length of longer and shorter pipe side respectively.

Density of various steel grades

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Tabular method for calculating the weight of steel pipes

It is based on tabular data, where the weight of one linear meter of steel pipe depending on its diameter is specified. The ratio of the outer diameter and wall thickness of an electric-welded steel pipe to the weight and working pressure is given below.

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