Immediately after my graduation, my first job was operating a tube mill and since then I have been engaged in various aspects of tube manufacturing for last 47 years. I have been fully engrossed in the fascinating world of tube technology.
Metal tubes, particularly welded steel tubes and pipes are around us everywhere in our day-today life - from ordinary furniture or structural tubes to tubes for critical application in power plants, automobiles and aeroplanes. Tube manufacturing and its further processing involves every important aspect of production technology and industrial engineering. Millions of tons of welded tubes are produced by thousands of tube manufacturing units worldwide. These tubes are further processed, manipulated, fabricated and finished by large number of units to produce components for further use. Thousand of entrepreneurs, engineers, technicians, designers, supervisors and operators are involved and engaged in producing tubes and pipes in carbon steel, stainless steel and non-ferrous metals from tiny hypodermic needle to large diameter pipes for sewage and water transportation.
Incidentally, I have found that there is hardly any reference book written on welded tube technology encompassing and covering basic aspects of tube manufacturing. Also, tube manufacturing is not covered in engineering colleges curriculum extensively. This prompted and motivated me to bring out comprehensive book covering basic aspects of tube technology which may be helpful to entrepreneurs, technocrats and supervisors in understanding various aspects of tube manufacturing, equipments, tooling and raw material.
One of my companies, DeeTee Industries Ltd. is supplying tube mill tooling and spares to hundreds of tube plants worldwide. In this connection, I had the opportunity to meet and interact with various tube manufacturers, mill suppliers and mill engineers which enriched me with practical and theoretical knowledge of welded tube technology. I could collect lot of inputs for this book from my friends who have indepth knowledge in their field.
Majority of the welded tubes manufacturing units produce longitudinally welded carbon steel or stainless steel tubes and therefore, I have covered tube mills/roll tooling and welding technology extensively spanning in six chapters. There are separate chapters for cold drawn tubes and galvanized tubes which are integral parts of welded tubes manufacturing. Operational issues for the production of good quality tubes are covered in separate chapters on raw material, mill setting, quality
problems/remedies and inspection/testing of tubes.
I have tried to provide various technical details and recommendations to the best of my knowledge and details / feedback provided by experts in their respective fields. However, there is no guarantee or assurance for the outcome which often depends on implementation of operational practices, process variables and operator's skill.
This book will be beneficial to all who have interest in welded tubes and pipes.