Calculation method of pressure on 1045 seamless steel pipe
1： The external diameter specification and wall thickness of 1045 seamless steel pipe are known, and the pressure that can bear is required. Calculation method:
Pressure = (wall thickness * 2 * tensile strength of 1045 seamless steel pipe) / (outer diameter * coefficient)

2： The outer diameter and the wall thickness of 1045 seamless steel pipe are known. Calculation method:
Wall thickness = (pressure * outer diameter * coefficient) / (2 * tensile strength of 1045 seamless steel pipe)

3： Expression method of steel pipe pressure coefficient:
Pressure P < 7MPa, coefficient S = 8
7 < steel pipe pressure P < 17.5, coefficient S = 6
Pressure P > 17.5, coefficient S = 4