Thick-walled seamless steel high-pressure principle principle thick walled high pressure seamless steel high pressure seamless steel pipe production works. High-pressure boiler cares includes the following steps: Step 1, material preparation; step two, tube heating and rotary piercing; step three, capillary dressing; Step four, thermal expansion deformation sizing; Step five, heat treatment; step six, straightening ; step seven, the mill; step eight, correction; Step nine high-precision steel tubes, outer wear; Step 10, flaw detection; 11 steps, 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 the investment is relatively small, high product quality, high production efficiency, lower production costs. The main production process high pressure boiler steel tube and billet heating, perforated tube, pipe extension, rolling 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 method of manufacturing packaging products of petroleum cracking tube, wherein: Set the rolling stands have multiple rolls to each different configuration of multiple consecutive rolling direction The mandrel mill, after such a manufacturing line for rolling seamless steel pipe, steel pipe wall thickness in the circumferential direction of the multi-point measurement after rolling on, based on the measurement result, at least the control of the core, respectively, end positions of each axis of the final rod mandrel mill rolling mill roll the base station, so uneven wall thickness to a minimum. Alloy seamless steel pipe wall thickness error is relatively large thick-walled seamless steel pipe to be more and more people are familiar with, but few people know what it is widely used in the main place, here are some: for the bridge dedicated steel for "16Mnq" 10 # precision steel, special steel for automobile frames "16MnL", a special steel pressure vessel is "16MnR". Such steel is to rely on the adjustment of carbonaceous (C) amount to improve the mechanical properties of the steel, and therefore 20 # precision steel tubes, according to the level of the carbon content of such steels can be divided into: low carbon - carbon content is generally less than 0.25%, such as 10, 20 steel and the like; medium carbon steel - carbon content generally between 0.25 to 0.60%, such as 35, 45 steel; high carbon - carbon content is generally greater than 0.60%. Such is generally not used in the manufacture of steel pipe 10 # precision steel, precision steel prices (certified), precision steel supplied 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_41135090.html), for more information about the company.