This eBook has been compiled for the benefit of all readers to understand more about flange management. The knowledge was found based on my technical research and 26 years of my competent experience in the oil, gas and petrochemical industry. Understanding the guidelines and principles of flange management has become almost mandatory for all jointing engineers in the industry. You need to get the right competency training on Bolt Flange Joint Assembly with subject matter experts (SMEs') in your workplace to get the job done. I am grateful to my colleagues in the industry for their valuable suggestions and comments. I have included many illustration diagrams to give you more clarity on the minimum knowledge and to give all readers an idea of why it is important to know about flange management. N O O R H I S H A M A B D U L