Pressure resistance of 25MPA
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For high-pressure hot air flushing equipment, the pipes need to be able to withstand a pressure of 25 MPa. If the outer diameter is 38, what wall thickness should be chosen? The material should be 304, for use at normal temperatures
According to the GB150 standard, a thickness of 6 mm is sufficient. For stainless steel 304, the allowable stress is taken as 122 at room temperature; d = PD/(2φ+p) + 2–3 mm, where d represents the thickness, p represents the pressure, D represents the outer diameter, φ represents the weld coefficient, and the value 2–3 represents the corrosion allowance
After calculating, it should be SCH 80S