When connecting flanges and flange covers, when should bolts be used and when should studs be used? How is the length of bolts and studs calculated?
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Everyone, I have a question. When connecting flanges and flange covers, when should bolts be used and when should studs be used? How is the length of bolts and studs calculated?
Check the HG20592 flange standard
It is related to the medium, temperature, pressure, etc.!
There are regulatory requirements for which standard bolts to use (container standards, pipeline standards, etc.). How to select it is related to the properties of the medium and the process conditions. The scope of application for bolts and studs is specified in HG/T20592-20634; it can be referred to.
Take a look at the HG2-592-HG20635-2009 flange standard; it contains detailed regulations on this subject
Everyone, is the length of bolts and studs determined according to HG/T20634-2009? Our factory does the calculations manually, and there are discrepancies in the lengths compared to the standards; which method is correct?
Unless it is a special custom flange, the bolt length needs to be adjusted due to variations in flange thickness； If flange standards are used, it is recommended to use the fasteners that come with the flanges