I have a question regarding the flanges for large-diameter pipes with a pressure rating of PN4.0MPA or higher!
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The last edit to this post was made by Desert Fish on 2015-12-1 at 16:49, regarding the flange standards for HG20592: those based on European standards have a nominal pressure of PN4.0MPA or higher, and the largest size available is 600. Is that the maximum size possible for products following European standards? ? Is it necessary to refer to American standards when it exceeds 600? ? ?
Check EN1092 or ISO7005
Reference can be made to the DIN EN 1092-1-2008 standard; the specifications for the high-pressure sections as per normal engineering standards are sufficient. If higher-pressure, larger-size versions are chosen, the parameters are provided in Appendix J, but certain dimensions require data or calculations to be provided by the user or the designer