Contact Tianjin Baocang Tengfei Steel Pipe for seamless steel pipe.

Seamless steel pipe contact Tianjin Baocang Tengfei steel pipe is mainly used in petrochemical, military, shipbuilding, aerospace and other fields.

Steel pipe is not only used for conveying fluids and powdery solids, exchanging heat energy and manufacturing mechanical parts and containers, but also an economical steel. Using steel pipes to make grids, columns and mechanical supports of building structures can reduce weight, save 20-40% metal and realize mechanized construction of factories. Using steel pipes to make highway bridges can not only save steel and simplify construction, but also greatly reduce the area coated with protective layers and save investment and maintenance costs.

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Production method of steel pipe:

Steel pipes are divided into seamless steel pipes and welded steel pipes. The production process of seamless steel tube is to pass solid tube blank or ingot into hollow capillary tube, and then roll it into steel tube with required size. Different methods of piercing and pipe rolling are adopted to form different methods of producing seamless steel pipes.

The production process of welded steel pipe is to bend the tube blank (steel plate or strip steel) into a tube shape, and then weld the gap into a steel pipe. Due to the different forming and welding methods, different methods of producing welded steel pipes have been formed.

Seamless steel pipes are mainly produced by hot rolling. Extrusion method is mainly used to produce low-plasticity high-alloy steel pipes or special-shaped steel pipes and composite metal pipes that are difficult to pierce. Heat pipes can be further processed into small-diameter thin-walled steel pipes by cold rolling and cold drawing.

Welded steel pipe has the advantages of simple process, high production efficiency, low cost and increased product variety. The main production methods of seamless steel pipe and welded steel pipe are shown in table 1 and table 2.