The first "SG/720 seamless steel pipe four-roller heat-setting reducer" was successfully launched at Dalian Sangao Group. It will soon be shipped to "the world's steel pipe industry leader" --- Tianjin Steel Pipe Group Co., Ltd. , It is installed in the production line for producing West-East gas pipelines. Its off-line not only broke the situation that all three mainframes in China's seamless steel pipe production line depend on imports, but also made the production of seamless steel pipe rolling equipment in China leap into the world-class level.
As a high-tech private enterprise, Dalian Sangao Group has been dedicated to the R&D and creation of steel tube processing equipment for more than ten years. In 2001, the company and German MEER and our country's top and bottom heavyweights and
Other well-known domestic and foreign companies publicly bid. The result was Tangshan Fengnan Iron and Steel Company's diameter of 122 cm LSAW large diameter (in the past three years, the company's annual sales revenue The proportion of 3% to 5% is used to draw special technology funds. At present, 26 patent technologies have been obtained, and nearly 80 technologies are being filed.)
According to reports, the seamless steel pipe production by the piercing machine, rolling machine, heat setting reducer three main components. Previously, all three major hosts needed by China depended on imports. The heat-setting reducer mainly completes the final processing of the seamless steel pipe production. In the 100-year history of seamless steel pipe production, heat-setting reducers have evolved from the original two-roller type to the three-roller type, and have been used until today. Compared with the former two, the advantage of the four-roller heat-setting reducer is that: when rolling different sizes of steel tubes, only the rolls are changed and the roll stands are not changed; the grinding of the rolls requires only an ordinary lathe; the thickness and diameter ratio of the rolls are three. The roller type is 15%~20% smaller, and the device volume is greatly reduced.
Other
Henan Dongfanglong Trade Co.,Ltd , https://www.tjdflpetro.com