How to select the sum of additional thicknesses for calculating the wall thickness of chemical pipelines?
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C=C1+C2, how to determine the value of C1? C2 is 1.5 for carbon steel and 0 for stainless steel? Thank you!
Negative deviation calculation, for example, there are cold rolling and hot rolling in the 8163 specification. The values are different. Which value should be used?
Which standard should be selected according to the thickness negative deviation of the standard?
Thanks! Choose 8163, which has both hot-rolled and cold-drawn features. Which one should you choose? I sent the screenshot to the first floor below.
Under what circumstances should cold drawing be used, and under what circumstances should hot rolling be used?
Just use hot rolled pipe. You can refer to GB150. High cold rolling precision
Generally, hot rolling is used, and cold drawing accuracy is higher. It seems like this
This post was last written by wx_Catherine_Edited by Mi on 2019-12-11 10:08 https://bbs.hcbbs.com/thread-553269-1-1.html Take a look at this
This table makes it very clear to choose according to pipe diameter.