Which type of fit -up tool is often used to fit flanges and where heavy-duty reforming of the pipe is required? rim clamp strongback cage clamp jewel clamp

The correct answer is: strongback.<br /><br />A strongback is a type of fit-up tool commonly used to fit flanges and where heavy-duty reforming of the pipe is required. It provides additional support and alignment during the fitting process, ensuring a secure and precise connection.