Why are threaded with inner tube boiler tube with a hollow section with a lot of transportation, largely used in the steel tube piping conveying fluids, such as transportation of oil, gas, gas, water and some solid materials, pipes and so on. And other high-pressure boiler tube and solid steel bar compared to the same torsional strength in bending, lighter inside steel pipe manufacturing, high-pressure boiler pipe is an economic cross-section steel, widely used in the manufacture of structural parts and mechanical parts, such as drill pipe, automotive drive shafts, bicycle frames and construction using steel scaffolding. High-pressure boiler pipe manufacturing annular parts, can improve material utilization, simplify the manufacturing process, saving materials and processing time, such as bearing rings, jack sets, has been widely used to manufacture steel. High-pressure boiler pipe threaded or indispensable material ,, barrel would have to make steel. Threaded high-pressure boiler pipe cross-section of different shapes can be divided into tube and shaped tubes. Because in the perimeter of equal conditions, the largest area of ??a circle with a circular tube can carry more fluid. In addition, the circular cross section to withstand internal or external radial pressure boiler pipe internal thread, the force is uniform, so the vast majority of pipe is pipe. The above information is provided for you by the Shandong Liaocheng Steel Pipe Manufacturing Co., Polygram. In December 2003, after the restructuring of Shandong Steel Pipe Co., Ltd. was formally established Polygram, he served as chairman Jun, general manager, when he was 37 years old. From 2006 to 2010, corporate sales volume reached 1.54 billion yuan, 1.65 billion yuan, 3.37 billion yuan, 21.7 and 2.88 billion yuan. "Only the year 2008 paid taxes on more than business founded in 1958 to all taxes paid before the restructuring of." This year, Polygram steel continue to triumph, to achieve 689 million yuan in the first quarter sales revenue, total profit 56.67 million yuan . In addition to the production of API standards for high-grade OCTG, but the company also develops and produces high resistance to sulfur corrosion products, anti-CO2 + high resistance to H2S corrosion products, high Cr corrosion products, high resistance to collapse Series , heat-resistant products, anti-sulfur pipeline products such as the six non-API products, and use of the company's characteristic small tubing, forming a two-upset tubing, drill pipe directly coupled to represent the characteristics of the product. Super13Cr products, has been successfully tested in a field northeast of steel tube manufacturers, the company became the first company to mass production of the product; T22, T23, T92, T91 high-grade high-pressure boiler tube, special-shaped pipe thread optimize the internal threaded pipe and other high technology products have become supercritical coal-fired power stations and supercritical units of mainstream products; however, this did not satisfy the company. Objectives are: 1-3 years, will the proportion of high value-added products OCTG from the current 15% to about 30%. In terms of high-pressure boiler tubes, cutting-edge products to the attack - R & D long pipe, high pressure super heater tubes and U-304 and nuclear power pipe. High-pressure boiler steel pipe inside the inner steel pipe prices, steel pipe inside by Polygram Liaocheng Steel Pipe Manufacturing Co., Ltd. Shandong Liaocheng Polygram Pipe Manufacturing Co. (www.lcbljgg.com) (www.lcbljgg.com) (www.sdlcblj.com) (www.bljggzz.com) Shandong Liaocheng, wire, pipe, plate manufacturing equipment leaders, over the years, the company implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In Polygram steel leader with the staff warmly welcome all inquiries negotiations to create Polygram steel a better future. You can also access (www.lcbljgg.com/supply_details_39570100.html), for more information about the company.