seamless steel pipe
Seamless steel pipe is rolled into round steel with steel ingot, obtained through hot piercing, and then made into seamless pipe by hot rolling, cold rolling or cold drawing.Seamless steel pipe is known as the "blood vessel" of industry. It is an important raw material for national industrial construction and national defense construction. It is needed everywhere and cannot be separated from it, no matter manufacturing aircraft, ships, trains, automobiles, boilers, power stations, oil, steam and water transportation, or developing mineral resources for geological drilling. It can be said that without seamless steel pipe, many industrial development such as petroleum, chemical industry, steel, machinery, military industry, aerospace and so on will be out of the question.
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