New Development of Technology for Deep Plastic Deformation of Weld Pipe

No matter what manufacturing process it is produced with, any weld pipe has its weld seam toughness and corrosion resistance lower than its base metal, which limits the application of such kind of tube in fields where relevant requirements are so stringent. However, thanks to deep cold or hot plastic deformation work, the tube properties become more homogenous, i.e., the weld seam toughness and corrosion resistance are much closer to those of the base metal, which means the weld tube is more similar to the seamless tube in terms of properties. Therefore it is predicted that the combination of the seamless steel manufacturing technology and that for weld tube will be the development trend of metallic tubular manufacture.