Production Technology and Development of OCTG Manufactured by Welding Mill

Development of OCTG in China and also the technical advantage and production process in manufacturing OCTG by a tube welding mill are introduced briefly. Especially the technical features and process projects of manufacturing OCTG by a tube welding mill directly or from welded tubes with hot stretch reducing approach are analyzed and compared. Some avoidable problems and feasible suggestions for manufacturing OCTG by a tube welding mill are put forward.