What is the history and development of seamless steel tube

The emergence of seamless steel tube

In 1815, an inventor in Scotland wanted to connect the tube so that the invention and use of the steel tube began from that. In 1836 Britain already had a patent for squeezing, but until 1885, Manmesmann brothers invented the process of producing seamless steel tubes directly from the bar. At this time, people used to call seamless steel pipe "clarinet". With the development of more than 100 years of technology history, seamless pipe appeared. In 1891, the advent of the rolling cycle has greatly improved the efficiency of the work.

In 1903 the SharonStiefel invented the plug type pipe rolling machine. These technologies have promoted the development of seamless steel tube industry. In 1930s there had been a variety of technological inventions, three roll tube rolling machine, extrusion machine, the cycle of cold mill and so on. So as to improve the quality of the steel pipe. Although the company is not much, the price of steel pipe is also very low in this time.

Production of seamless steel pipe materials

Seamless steel pipe is made from steel ingot or billet by solid tube perforation and hot rolling, cold rolling or cold drawing. Seamless steel pipe has a hollow section, which is used for conveying fluid. Compared with round steel or other solid steel, at the same time in the bending torsional strength phase, the weight of steel tubing is light, which is a kind of economic section steel and widely used in manufacturing structural parts and mechanical parts. Such as oil drill pipe, automobile transmission shaft, bicycle frame and construction of steel scaffolding, etc.

Seamless steel pipe technology leap

The emergence of three rolling pierce enhances the competitiveness of seamless pipe. In a few years after liberation, China began to focus on the development of seamless steel tube industry. In November 2012, the yield of seamless steel pipe is 2 million 572 thousand tons. Compared with the same period last year, it increased by 299 thousand tons and achieve an increase of 13.2%, growth of 3.71% on a month-on-month basis. The cumulative production of seamless steel pipe is up to 25 million 635 thousand tons from January to November.

With the seamless steel pipe industry competition continues to increase, merger integration and capital operation of large enterprises are becoming more and more frequent. Domestic excellent seamless steel pipe production enterprises more and more pay attention to the research of the industry market, especially in-depth study with the enterprise development environment and customer demand trends. Because of that, a large number of outstanding domestic seamless steel brand rise rapidly and gradually become a leader in the seamless steel tube industry.