Is it feasible to bend 304 stainless steel into a π shape on-site?
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Liquid oxygen pipeline, DN15 stainless steel, wall thickness 2.5mm, design pressure 1.6mpa. The π-shaped bend was fabricated on-site directly, without the use of elbows; this helps to reduce the number of weld points. However, the wall thickness at the bend area must decrease as a result. Is this approach in compliance with the regulations? I’m asking experts for help with this; thank you.
This is acceptable; the gauge tube is of this type. With this wall thickness, it can withstand such high pressures, and large-radius bends do not cause much thinning
Of course, it can reduce the workload, lower pipeline resistance, and minimize static electricity generation.
At least, it is allowed in the pressure pipeline codes. . . . .
If you’re worried, just measure the thickness to see if it falls within the allowable negative deviation range for the pipeline wall thickness.
We’re using this anyway. . . The standards can also be found. .