A seamless pipe is long steel with a hollow section and no joints on the periphery. So today we will take a look at the product features and cold rolling process of Seamless Pipe Manufacturers .
First of all, the thicker the wall thickness of a seamless pipe, the more economical and practical it is. The thinner the wall thickness, its processing cost will rise significantly; secondly, the process of the product determines its limited performance. The seamless steel pipe has low precision: uneven wall thickness, low brightness on the inside and outside of the pipe, high cost of sizing, and there are pits and black spots on the inside and outside that are not easy to remove; finally, its detection and shaping must be processed offline. Therefore, it embodies its superiority in terms of high-pressure, high-strength, and mechanical structural materials.
The rolling method of cold drawn (rolled) seamless steel pipe is more complicated than that of hot-rolled (extruded seamless steel pipe). The first three steps of their production process are the same. The difference starts from the fourth step. After the round tube blank is emptied, it needs to be headed and annealed. After annealing, use a special acid liquid for pickling. After pickling, apply oil. Then it is followed by multiple passes of cold drawing (cold rolling) and then billeting, and special heat treatment. After heat treatment, it will be straightened. yintuosteel.com
First of all, the thicker the wall thickness of a seamless pipe, the more economical and practical it is. The thinner the wall thickness, its processing cost will rise significantly; secondly, the process of the product determines its limited performance. The seamless steel pipe has low precision: uneven wall thickness, low brightness on the inside and outside of the pipe, high cost of sizing, and there are pits and black spots on the inside and outside that are not easy to remove; finally, its detection and shaping must be processed offline. Therefore, it embodies its superiority in terms of high-pressure, high-strength, and mechanical structural materials.
The rolling method of cold drawn (rolled) seamless steel pipe is more complicated than that of hot-rolled (extruded seamless steel pipe). The first three steps of their production process are the same. The difference starts from the fourth step. After the round tube blank is emptied, it needs to be headed and annealed. After annealing, use a special acid liquid for pickling. After pickling, apply oil. Then it is followed by multiple passes of cold drawing (cold rolling) and then billeting, and special heat treatment. After heat treatment, it will be straightened. yintuosteel.com
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