What is the relationship between the bending strength of steel pipe and the wall thickness of steel pipe?

When the steel pipe is used as a front probe beam, its bending capacity should be considered from two aspects: the limitation of deflection and the requirement of strength, which are closely related to the inner and outer diameters of the steel pipe. For example, purely according to mechanical analysis, it is related to the moment of inertia and section coefficient of steel pipe. The moment of inertia and section coefficient (circular pipe) of steel pipe are respectively equal to the difference between the 4th power of outer diameter and the 4th power of inner diameter multiplied by π divided by 64, and equal to the difference between the 4th power of outer diameter and the 4th power of inner diameter multiplied by 0.0892 divided by the outer diameter of steel pipe. When the internal and external diameter coefficients of steel pipes are determined, the wall thickness of steel pipes is naturally included. Of course, it can be seen that the diameter of steel pipe plays a more important role than the wall thickness.