
3. There is another commonly used algorithm: (side length + side length) * 2 = perimeter, (circumference/3.14-wall thickness) * wall thickness * 0.02466 * length = weight of 1 piece
Summary:
Generally, the weight calculated by the first algorithm is too large, and dealers often use this method to measure and sell. The second method depends on the difference in wall thickness and diameter of the square tube. The width of the actual strip steel used for the square tube is not good. Confirm, so most square tube manufacturers generally use this algorithm; the third algorithm does not distinguish between wall thickness and caliber size, so it is generally used by those who sell by weighing. In reality, there is a certain tolerance range when the wall thickness meets the national standard. Therefore, the weight we calculate is generally larger than the actual weighing weight.
The calculation formula for the weight of round pipes is: (pipe diameter - wall thickness) × wall thickness × 0.02466 kg/m.
Go here to learn more about "square tube sizes"
Related information