Table of pipe nominal size and wall thickness correspondence
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Dear experts: The formula for calculating the pipe size is Sch = P/t × 1000; refer to the mechanical design manual. The formula for calculating the pipe wall thickness is S1 = PD1/2(E + PY), and S = S1 + C1 + C2. Refer to GB50316-2000. The meanings of various symbols in these formulas will not be explained here. Is the wall thickness data corresponding to the pipe size determined as follows: 1. For pipes made of the same material, under the same design pressure, first calculate the pipe size code Sch ； Then, based on the different outer diameters of the pipes, the wall thickness for that pipe size is calculated. The same principle applies to other materials and pressure grades; using this method, wall thickness data tables for different materials and pressure grades corresponding to various pipe outer diameters can be created. 2. If calculations are to be carried out in this way, it is necessary to compute each value individually and then compile them into a table, which is quite cumbersome. 3. Does anyone have an existing thickness table corresponding to the pipe specification numbers? The highest grade I have is Sch160 for carbon steel pipes and Sch80S for stainless steel pipes. Do the experts have data on higher-grade stainless steels? I’m hoping to get some! Since I am dealing with stainless steel pressure pipes at 30 MPa, according to Sch’s calculation formula, Sch = sch260S. It’s too troublesome for me to calculate the wall thickness for different outer diameters using the wall thickness formula, so I’m looking for a pre-calculated value.
Where is the expert? Please show yourself! ! !
Check ASME B36.19, or just use an alloy material; I’ve never heard of SCH 260S.
Does anyone know the wall thicknesses for pipes made of 20# and 304 material at 30 MPa, for different outer diameters?
As shown in the figure: I found a very old standard, H31-67, which is a standard for high-pressure pipes and fittings in the fertilizer industry. However, this standard is too outdated, and the outer diameter of the pipes corresponding to their nominal diameters differs from that specified in current standards. Furthermore, this standard does not specify what material the pipe with this wall thickness is made of. So it seems unreliable; it can only be used as a reference, not as a basis for design. I’m not sure if experts have any experience in this area; please give me some advice!