How to calculate the pressure bearing capacity of Shandong thick-walled seamless steel tubes - An illustration
Shandong thick-walled seamless steel pipe how to calculate the pressure bearing capacity - an example - Shandong seamless steel pipe plant to provide thick-walled seamless steel pipe pressure capacity calculation is what kind of the following we select an actual case to illustrate
DN=10MM, wall thickness 3mm
Let the tensile strength of the material be σ, the pressure be P, the pipe outer diameter D;
Tube wall thickness δ=(P*D)/(2*σ/S)
Where S is the safety factor;
Because P is less than 7MPa, S selected S = 8; P is less than 17.5MPa, S selected S = 6; P is greater than 17.5MPa, S selected S = 4;
We choose the safety factor as S=6; choose 20 steel tensile strength as 410MPa,
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Therefore, the pressure that the tube can withstand P=(2*σ/S*δ)/D
=(2*410/6*3)/(10+6)
=26.25MPa> set 17.5
Therefore, the safety factor takes S=4
Therefore, the pressure that the tube can withstand P=(2*σ/S*δ)/D
=(2*410/4*3)/(10+6)
=39.375MPa
According to this formula, you can easily calculate the pressure capacity of a variety of thick-walled seamless steel tubes
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