Please tell us about the differences between the 09 version of the steel pipe flange for HG20592 and that of version 97

2010-03-24View Original

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I have not studied in detail the specific differences between HG/T20592-2009 and the 1997 version; from a preliminary understanding, one difference is that the PN value in the new version has been changed from MPa to bar； 2. The new version eliminates the plate-type flat welding flanges with PN6 rating and a nominal diameter greater than DN600. If there are any other changes, please share them so that everyone can understand the new regulations as soon as possible.

Reply #22010-03-25

1. Thickness of some flanges increased. 2. PL flanges now have PN40 rating. 3. Fasteners have been adjusted slightly. 4. Materials have been reclassified

Reply #32010-03-25

I haven’t looked at this carefully yet. Placeholder first.

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Please tell us about the differences between the 09 version of the steel pipe flange for HG20592 and that of version 97

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