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The corrosion is at this level; it’s time to replace it

2018-09-25View Original

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For a 900LB flange, when the screws and gaskets are corroded to this extent, it’s time to replace them, right? Thank you. Are there any standards for this? For example, what percentage of the original size should the bolt diameter be corroded before replacement is necessary?
Reply #22018-09-25
There’s no standard for this; as long as there’s no leakage, it doesn’t need to be replaced
Reply #32018-09-25
Visual corrosion is indeed quite severe; it is said that the thickness of the rust is ten times that of the original steel thickness. Let’s take a look after removing the rust. It also depends on what medium is being transported and whether the risk of sudden leaks can be tolerated.
Reply #42018-09-25
Visual corrosion is indeed quite severe; for safety reasons, it should be replaced.
Reply #52018-09-25
Check the manufacturing tolerances of studs for stud corrosion standards
Reply #62018-09-26
It should be replaced! It’s probably impossible to take it down without causing damage
Reply #72018-09-26
Thank you all. I also think it’s time for a replacement; the equipment operates at 6.5 MPa, and that’s very important as well – we can’t afford any leaks.
Reply #82018-09-26
It must be replaced! 13665109265 Yi Wenhai – the same WeChat ID; a stainless steel manufacturer from an iron and steel plant. Add WeChat for further discussion.

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