Annual production of the virtues of Industry China National Standard (GB) United States ASTN (ASME) standards, DIN, JIS standard and the British Standard BS seamless steel tubes, specifically low-pressure boiler pipe, high pressure boiler pipe, seamless ship steel pipe, oil cracking pipe HM pipe prices, high-pressure chemical fertilizer equipment, seamless steel pipe, tubing and casing pipe, line pipe, hollow rod, ordinary fluid pipe, structural pipe and steel pipe imports, product variety, complete specifications, a wide range of applications petroleum, chemical, electric power, boilers, ships, machinery and other industries, has been sold throughout the country. Many products have been exported to the Middle East, India, Southeast Asia and Europe and to control how the annealing process Precision tube hole deformation control Precision tube deformation during annealing of small diameter hole HM pipe, pipe wall thickness coefficient larger, so that the average annealing furnace annealing, precision tube wall thickness is generally uneven, causing the inner surface of the precision tubes appearing "hexagon" more severely. In order to make precision steel during annealing of precision seamless steel tube and the outer diameter of the hole will not have too many losses, we have for straightening equipment has been a marked improvement. Precision Tube reducing rate is a "hexagon" the most important factor. Reducing the rate of excessive tension coefficient increases, resulting in increased metal deformation axial flow, radial flow weakened radial uneven thickness. Single rack-reducing rate, height and amount of compression means that the roll gap at the top of the inhomogeneity and the greater the difference between the metal flow, mainly by reducing the rate of adjustment and modification of reducing mill to reduce the rate of reducing HM pipe manufacturers to develop The production process can effectively reduce the polygon generation HM pipe at reducing the rate of change of the total, an increase in the number of finished rack, you can reduce the rate of reducing single frame. Optimize the use of five before sizing machines, optimizing the use of six after sizing mill. HM pipe production plant _ virtue of Industry (certified) _ HM Pipe Co., Ltd. Liaocheng by virtue of Industry. Liaocheng virtue Pipe Co., Ltd. (www.meidegc.com) (www.meidegc.com) (www.mdwfg.com) (www.mdggc.com) Shandong Liaocheng, steel leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Industry leaders in the United States and Germany with the staff warmly welcome all inquiries negotiations to create the virtues pipe industry a better future.