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How to prevent flange bolts from loosening?

2017-11-11View Original

Thread Content

A batch of API682 products was sent to HGS in South Korea, and it was found that the pipeline flange bolts were loose. What could be the reason? How to prevent it?
Reply #22017-11-19
Bolting is S.S.; is it related to the material?
Reply #32017-11-21
Spring washer or loose shimming washer

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