the difference between seamless steel pipe and seamless steel pipe

December 10, 2018

The price of seamless steel tubes is about 500-800 yuan/ton higher than that of straight seam welded tubes, and the price of seamless steel tubes is 800-1200 yuan/ton higher than that of seamless steel tubes.
Seamless steel pipe production process|The seamless steel pipe is mainly achieved through tension reduction, and the tension reducing process is a continuous rolling process in which the hollow base metal does not have a mandrel. On the premise of guaranteeing the quality of the welding of the mother tube, the tension reducing process of the welded pipe is to heat the whole of the welded pipe to 950 degrees Celsius or more, and then to a variety of outer diameters and walls by a tension reducer (a total of 24 passes of the stretch reducer). The , the hot rolled steel tube produced by this process and the ordinary high-frequency welded pipe are essentially different. After heating in the heating furnace, the metallographic structure and mechanical properties of the weld and the parent metal can be completely consistent. The secondary tension reducer rolling and automatic control make the pipe's dimensional accuracy (especially the pipe roundness and wall thickness accuracy) better than the similar seamless pipe. Fluid tubes and boiler tubes produced in developed countries in the world have adopted a large number of welded tube seamless processes. With the development of society, the domestic hot-rolled welded tubes have gradually replaced the seamless tubes.
20181210135931

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Author:

Ms. Sunny Peng

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+8618333120628