Fitting wall thickness
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This post was last edited by sdwfsgyykai on 2019-4-29 08:07. The wall thickness grade for a DN50 stainless steel elbow is SCH10S; so what is its actual wall thickness or nominal wall thickness? How is this determined?
Is it US standard? Check ASME B36.19M. Refer to ASME B36.10M, 2.77mm.
It is a pipe with an outer diameter in accordance with the national standard GB/T12459, Series 2
Then check the corresponding pipeline standards. Can’t find them?
The number corresponding to this value. . Simply find the last page of GB/T12459-2005. .
You can only measure the actual wall thickness; the wall thickness corresponding to Sch10S can be found in HG/T 20553
For standard things, just look them up and you’ve got them, right?
There is no corresponding SCH wall thickness classification table for Series II pipes. When I was in the chemical plant design department, I tried to use GB/T 12459 to specify the pipe fittings, indicating Series II, but I forced the use of sch instead. Then, the manufacturer also makes the fittings by referring to those made for the corresponding I series. But after switching to a professional design firm, I didn’t dare to be so casual anymore; I used the PN rating of the pipes for the fittings and specified the dimensions of the connections.
The nominal outer diameter and wall thickness are φ60.3X2.77; the actual values need to be determined through measurement
That seems to be the wall thickness grade for I-series outer diameter fittings; I wonder if the wall thicknesses for Series 2 can be expressed as SCH10S/SCH40, etc