How to calculate the weight of square steel tube and rectangular steel tube in detail

For construction students or new technicians, knowing how to calculate the weight of a square steel tube is almost mandatory. Especially for projects that require steel tubes, this is very necessary. If you do not know this formula, Bao Tin Steel will suggest it to help you calculate and choose materials more accurately. See below!

How to calculate the weight of all kinds of steel tubes

Currently on the market, there are 2 types of steel tubes: square steel tube and rectangular steel tube. You must clearly understand which type of your project needs to apply the appropriate formula for calculating the weight of a steel tube. Below is how to calculate the weight of steel for each type:

Square steel tube calculation formula

Square steel mass (kg) = [4 x T(mm) x A(mm) – 4 x T(mm) x T(mm)] x Z(g/cm3) x 0.001 x L(m)

In there:

• A: Dimension of one side of the square tube.
• T: Thickness of the square steel tube.
• L: Length of the steel tube.
• Z: Is the density of steel equal to 7.85 (g/cm3)

For example: Given a 40×40 square steel tube, 1.2 mm thick, 6 m long

=> Applying the above formula we have: The weight of a square steel tube is:

(4 x 1.2 x 40 – 4 x 1.2 x 1.2) x 7.85 x 0.001 x 6 = 8.77 (Kg)

How to calculate the weight of rectangular steel tube

Hoa Phat galvanized rectangular steel tube

Steel volume (kg) = [ 2 x T(mm) x {A1(mm)+ A2(mm) }- 4xT(mm) x T(mm)] x Z (g/cm3) x 0.001x L(m )

In there:

• T: thickness
• W: width
• L: length
• A1: length of side 1
• A2: length of side 2
• Z: Density is 7.85 (g/cm3)

For example: Given a rectangular steel tube 13×26, 0.9mm thick and 6m long. How do you calculate the square steel in kg?

=> Applying the above formula we have: the formula for calculating the mass of a rectangular steel tube:

(2 x 0.9 x (13+26) – 4 x 0.9 x 0.9) x 7.85 x 0.001 x 6= 3.15 (kg).

Answering customer questions

How many kg does a square steel tube weigh?

Cân nặng của một cây thép hộp (hoặc 1 m thép hộp) cũng được áp dụng bằng công thức Thép Bảo Tín gợi ý bên trên. Cụ thể:

• The formula for calculating the weight of a square steel tube is: Steel weight (kg) = [4 x T(mm) x A(mm) – 4 x T(mm) x T(mm)] x Z(g/cm3) x 0.001 x L(m)
• The formula for calculating the weight of a rectangular steel tube: Steel weight (kg) = [ 2 x T(mm) x {A1(mm)+ A2(mm) }- 4xT(mm) x T(mm)] x Z (g/cm3) x 0.001x L(m)

You need to put the data in and you can find the amount of square steel you need!

Above is the simplest way to calculate the weight of a steel tube. Hopefully, the sharing of Bao Tin Steel will help you gain more useful knowledge. If you need to answer any questions, please contact us! – 0932 059 176.

Tiger Steel is a branch of Bao Tin Steel.