2 Minutes to Understand The Whole Production Process of Hot Rolled Seamless Steel Pipe!

Seamless steel pipe production has a history of nearly 100 years. The German Mannesmann brothers first invented the two roll cross rolling piercer in 1885, and the periodic pipe mill in 1891. In 1903, the Swiss R.C. stiefel invented the automatic pipe mill (also known as the top pipe mill). After that, various extension machines such as continuous pipe mill and pipe jacking machine appeared, which began to form the modern seamless steel pipe industry. In the 1930s, due to the use of three roll pipe rolling mill, extruder and periodic cold rolling mill, the variety and quality of steel pipes were improved. In the 1960s, due to the improvement of continuous pipe mill and the emergence of three roll piercer, especially the success of tension reducing mill and continuous casting billet, the production efficiency was improved and the competitiveness between seamless pipe and welded pipe was enhanced. In the 1970s, seamless pipe and welded pipe were keeping pace, and the world steel pipe output increased at a rate of more than 5% per year. Since 1953, China has attached importance to the development of seamless steel pipe industry, and has initially formed a production system for rolling all kinds of large, medium and small pipes. Generally, copper pipe also adopts the processes of billet cross rolling and piercing.