u bolt manufacturer

By using lubricant it is sure to make any stubborn bolt. Sometimes old U bolt and nuts are sealed due to rust. you can use either fire or acid to break away the rust. After the nut has been lubricated, you can easily unscrew it. Source: How to Remove Stubborn Bolt

U bolt provides the vertical support and restricts support for your application. U bolts are sized differently to provide maximum clamping force. It can rust and its threads become damage over time and reuse will only compromise their integrity.