フランジボルトの緩み防止方法は？
Thread Content
API682製品の一式を韓国のHGSに出荷したところ、配管フランジのボルトが緩んでいることが判明しました。原因は何でしょうか？ どう防ぐか？
ボルト締めはS.S.ですが、材質と関係がありますか？
スプリングワッシャーまたは緩衝ワッシャー
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