Selection of bolts for high-pressure flanges at 16 Mpa
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This post was last edited by Sammy_Wang on 2016-1-31 19:57: Selection of bolts for high-pressure flanges at 16Mpa
We use the type with threads on both ends
It depends on which standard your flanges follow; that standard specifies the corresponding standards for gaskets and fasteners, so there will be no mistakes
Check the standard HG/T20613--2009 by yourself. We have chosen fully threaded bolts made of 35 chromium-molybdenum steel
Based on the relevant standards, for high-pressure applications, it is recommended to choose welded valves directly, as this saves hassle
25Cr2MoV/35CrMoV is commonly used at high temperatures, while 35CrMoA/30CrMoA is used at normal temperatures
The pressure is known, but the current flange diameter is unknown, and the type of flange is also unknown; therefore it’s difficult to provide you with the bolt standards you need