Is there a maximum pressure specification for steel pipes at the moment?
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Is there any maximum pressure specification for steel pipes at the moment? Thank you
You can’t be lazy – you can look up the calculation formulas; ASME B31.3 contains formulas for calculating pipe wall thickness, likely in paragraph 304.1.1. You can verify it by yourself; it’s not difficult.
δ = PD / (2t + P) + C
δ – wall thickness in mm
P – operating pressure in MPa; when the pressure is low, the denominator P is taken as 0 to simplify the calculations. D – outer diameter of the pipe in mm; Weld coefficient: for seamless steel pipes, the value is 0.6. t – The allowable stress of the pipe at various temperatures, in MPa; C – The additional wall thickness, in mm. C = C1 + C2 + C3, with a value typically ranging from 2 to 4 mm. C1 = C × 15% (12.5%); C2 – Corrosion allowance, usually 2 mm; C3 – Depth of the pipe threads. From these values, the pressure formula can be derived. It is related to the wall thickness, design temperature (which affects stress), and the weld joint factor; these factors determine the maximum pressure that the steel pipe can withstand.
δ – wall thickness in mm
P – operating pressure in MPa; when the pressure is low, the denominator P is taken as 0 to simplify the calculations. D – outer diameter of the pipe in mm; Weld coefficient: for seamless steel pipes, the value is 0.6. t – The allowable stress of the pipe at various temperatures, in MPa; C – The additional wall thickness, in mm. C = C1 + C2 + C3, with a value typically ranging from 2 to 4 mm. C1 = C × 15% (12.5%); C2 – Corrosion allowance, usually 2 mm; C3 – Depth of the pipe threads. From these values, the pressure formula can be derived. It is related to the wall thickness, design temperature (which affects stress), and the weld joint factor; these factors determine the maximum pressure that the steel pipe can withstand.
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