Liaocheng in Shandong Steel Pipe Manufacturing Co. Polygram perennial sales agent in Shandong 27 * 3 stainless steel tube, Cheng Gang, Steel 219 * 4 stainless steel pipe, Bao, saddle, Ye, day, Hengyang Steel and other major steel production plants: 10 # , 20 #, 45 #, 16Mn, Q345B, 27SiMn, 40Cr, 20Cr, 20CrMo, 35CrMo, 42crmo, 20crmnTi, 15crmo, 12Cr1MoV, 10CrMo910, T91, P91 and other materials seamless steel pipe, high pressure boiler pipe, oil cracking pipe , pipe, bearing steel and a variety of long-term sales of imported alloy Q235B, Q345B and other welded pipe, spiral pipe and geology, pipelines, chemical, power and other special pipe; various profiles I-beam, angle steel, H steel, channel, such as sheet metal; All products in strict accordance with the national standard, absolute guarantee quality, may enter into supply contracts, is definitely your first choice for purchasing steel. Thick-walled high-pressure seamless steel pipe principle principle of thick-walled seamless steel high pressure high pressure seamless steel pipe production works. High-pressure boiler whether it includes the following steps: Step 1 stainless steel tube, material preparation; step two, tube heating and rotary piercing; Step three, capillary trim; Step four, thermal expansion deformation sizing; Step five, heat treatment; Step 6 straightening; Step seven, the mill; Step eight, correction; Step nine, outer wear; Step 10, flaw detection test; 11 steps, and then finishing, final inspection and packaging. The present invention can be produced only in the range of a large group from the high-grade alloy seamless steel pipe, and a relatively small investment, high product quality, high production efficiency and lower production costs. The main production process high pressure boiler steel tube and billet heating, perforated tube, pipe extension, rolled steel pipe, pipe sizing and reducing, cooling and finishing steel or can be said heating hot steel perforated embryos rolled pickling spray head cut cold drawn carbon burning labeled and packaged goods A method of manufacturing petroleum cracking tube, characterized in that: setting a plurality of rolling stands having rolls, to each different configuration of multiple consecutive rolling direction The mandrel mill, after such a manufacturing production line rolling of seamless steel tubes in the multi-point measurement pipe circumferential direction after rolling on, according to the measurement results, at least control the core both end positions of each axis rod mill final seamless rolling mill roll the base station, so uneven wall thickness to a minimum. Error thick-walled seamless steel pipe wall thickness is relatively large alloy Polygram Liaocheng Steel Pipe Manufacturing Co. is in production, sales, logistics in one large seamless steel pipe manufacturing enterprise, sales Baotou Seamless Steel Tube Plant, Chengdu Seamless Steel Tube all kinds of plant, Baosteel seamless steel pipe plant, Anshan Iron and Steel Seamless Steel Tube Plant, Steel pipe plant, Wuxi Seamless Steel Tube Plant, Tianjin Seamless Steel Tube Plant and other major steel production of seamless pipe. Long-term with a variety of seamless tube, fluid pipe, structure pipe, fertilizer dedicated pipe. The supply of seamless steel tubes are in line with national acceptance criteria. I will be with a good reputation and solid strength, low prices, quality products and services to our customers. Yuanyuguangda new and old customers hand in hand 89 * 3 stainless steel tubes, create a cause. Long-term in the first, puerile principle of credibility, quality service, flexible business model to develop new markets; new and old customers to help support continued development and growth, has become a large seamless steel pipe production in Shandong operating companies. Credibility is the life, your needs is our Founding of this! _18 Stainless steel tube 42 * 3 * 2 stainless steel tube (certified) _ stainless steel tubes supplied by Polygram Liaocheng Steel Pipe Manufacturing Co., Ltd. Liaocheng in Shandong Steel Pipe Manufacturing Co. Polygram (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 implement 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 better future.