The company currently has three complete pipe production line: one for 60, 90 punching machine, cold call six production lines, hot-rolled production line, the main production outside diameter 30mm-219mm thick-walled seamless steel pipe; two 325mmASSRL pipe rolling mill, the Department of domestic the largest three-roll rolling machine, using mandrel pre-wear and limitations of small cycles, three computer-controlled automation systems, have reached the international advanced level. Mainly produce diameter 177mm-426mm 316 precision stainless steel pipe, wall thickness 10mm-100mm, outer diameter precision ± 0.5%, ± 5% wall thickness accuracy of our company establish a strong relationship with a number of industry partners, brought together domestic Spot steel resources in steel, the main specifications: diameter 8mm-3000mm, wall thickness 1-100mm Material:. 10 #, 20 #, 35 #, 45 #, GCr15,20Cr, 40Cr, 16Mn, 15CrMo, 35CrMo, 42CrMo , 27SiMn, 12Cr1MoV so on. The company at affordable prices high standards of product quality for our customers to gain more profits. Stock a variety of thick-walled seamless, customized with different specifications steel pipe, precision cold-rolled steel pipe, seamless steel pipes, thermal expansion seamless steel pipe, spiral steel pipe, pipe, hose reel, ductile iron pipe and so on. Long-pressure boiler tubes for precision steel plant transformation grab market opportunities. October 2014, Babcock & Wilcox Company formally Polygram Liaocheng Steel Pipe Manufacturing Co. ordered within a length of 14 to 18.3 m long threaded pipe of 217 tons for the supercritical boiler manufacturing plant. 2008 precision stainless steel tube manufacturers, high-pressure boiler pipe factory production to achieve long tube length, steel two major shift production from only 12-16 meters in length carbon steel pipe, to be able to produce 21.5 m super Long threaded steel pipe, and successfully developed a series of precision stainless steel tube, get the user's attention and recognition at home and abroad, continue to lead the female domestic production operations. In March 2009, through the improvement and optimization of cold drawing die pickling, lubrication, heat treatment and other supporting technology of 316l stainless steel precision tubes, as well as the ability to improve equipment, precision steel pipe production plant long has been extended to eight grades, The maximum length of 22.51 m. At the same time, carry out research and application of long tube to pull within a molding of new materials, so that the service life of the ordinary in the mold of 8 times. In 2009, Babcock & Wilcox Company won the bid Vietnam Weng shore boiler plant 600,000 kilowatts, Liaocheng Polygram Pipe Manufacturing Co., Ltd. to provide long pipe for the project has played an important role in the final production. At present, Shandong Liaocheng Polygram Pipe Manufacturing Co. to produce 24 m long tube T91, T22 high-grade steel products, products exported to many countries, Russia, South Korea, India, the praise of users. Now is not within the boiler tubes threaded into a non-thread sealing and thread sealing, now divided into three criteria: column / pillar with the column / cone fit and taper / taper fit. Pillar / column with: no sealing capability can be added sealing structure for low static load. Column / Cone with: sealing capability, used in low-voltage static load, such as water, gas pipes. Cone / cone with: more difficult to complete a full cone seal, often already screwed tight, but still there is a leak. But once a seal will not easily be destroyed, for high-pressure dynamic loading. 55 degrees sealing pipe thread - internal Taper internal and external threads sealed low probability, but can not easily be destroyed, can be used for high voltage withstand shock loads of occasions. GB / T 7306.2-2000 55 degrees unsealed pipe thread - the inner cylindrical threaded cylindrical outer thread does not have the seal after its internal and external thread with, only play the role of mechanical connections in the piping system, can make use of seals in the thread deputy beyond the end face seal, used for low pressure pipeline system under static load. Shandong Liaocheng Polygram Pipe Manufacturing Co. provides you with precision stainless steel tube manufacturers, precision steel tubes, high-precision stainless steel pipe provided by the Shandong Liaocheng Steel Pipe Manufacturing Co., Polygram. Shandong Liaocheng Polygram Pipe Manufacturing Co. (www.lcbljgg.com) (www.lcbljgg.com) (www.sdlcblj.com) (www.bljggzz.com) strong, credible, Shandong Liaocheng wire, tubes, plates and other manufacturing equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Polygram pipe into the brilliant and you work for a better future! You can also access (www.lcbljgg.com/supply_details_40440235.html), for more information about the company.