Generally, large-diameter steel pipes bearing pressure of 300-500 kg should be no problem, but the pressure varies with different specifications. Here is a formula for you to calculate, the yield point of large-diameter steel pipes: 255 elongation: 21 impact work: 35 pressure: P=2SR/D (P=test pressure, S=nominal wall thickness of steel pipe, D=nominal outer diameter of steel pipe, R=allowable stress)
Pressure-bearing formula of large-diameter steel pipe
Below we select an actual case to illustrate DN=10MM, the wall thickness is 3mm.
Suppose the tensile strength of the material is σ, the pressure is P, and the outer diameter of the tube is D;
Pipe wall thickness δ=(P*D)/(2*σ/S)
Where S is the safety factor;
Because P is less than 7MPa, S selects S=8; P is less than 17.5MPa, S selects S=6; P is greater than 17.5MPa, S selects S=4;
We choose the safety factor as S=6; choose 20 steel with a tensile strength of 410MPa,
So the pressure that the pipe can withstand
It can be seen that the bearing capacity of large-diameter steel pipes is relatively large, and it is a good choice to install pipes on general buildings and underground burying.