Selection and calculation of stainless steel manholes for pressures above 16 kg
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While preparing the budget today, I noticed that for steel manholes and access holes, the material suitable for a pressure of 2.5 MPa does not include stainless steel. I asked around and was told that the cost of stainless steel increases at higher pressures, but is this really the reason why there is no option of stainless steel at this 2.5 MPa level? Also, how should it be calculated if the customer insists on using stainless steel?
I mainly dealt with production technology before, and I hadn’t paid attention to such details. Please feel free to advise me!
HGT 21594～21604-2014 Stainless Steel Linered Manholes and Handholes
A stainless steel-lined structure can be considered.
HG/T 21594-2014
Refer to carbon steel usage; wall thickness shall be determined based on hole reinforcement
Two options: 1. Use stainless-steel manholes and handholes (pay attention to the usage requirements). 2. Refer to the carbon steel manhole; reinforcement calculations for openings in the pipes are required.