Flange sealing surface
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The RF sealing surface of the flange does not have circumferential reinforcement rings – is this in compliance with the standards?
Is that the waterline? Used to fix the position of the washer relative to other elements. At low pressure, it can be used without it, but it’s better to have it.
HG/T20592-2009:
It is related to the selection of gaskets! It’s best to machine a sealing water line for the gasket! Due to the risk of intergranular corrosion, it is recommended not to machine stainless steel!
The sealing surface is the wavy line, right?
I guess so~ The common ones usually have three distinct rings; it’s scary to see one without rings, thinking there might be a problem
I also noticed that the serrated rings mentioned in this standard refer to those three distinct rings on the sealing surface, right?
Some have three distinct rings, while others do not
Which of these two meets the requirements specified in the standards?
Yes, it’s called water ripple lines in the traditional terms.