Liaocheng in Shandong Steel Pipe Manufacturing Co. Polygram provide you with non-standard steel pipe, non-standard steel pipe with respect to the Chinese national standard seamless steel pipe shaped in terms other than the national standard, and in the production of seamless steel pipe in accordance with national regulatory requirements in diameter size, wall thickness classification, small-diameter pipe, and allow a certain degree of error, error referred to the national standard in the standard range. In practical use, often national standard specification has some limitations, which corresponds to the emergence of non-standard seamless, non-standard steel pipe specification is to supplement the national standard specifications and the production of seamless steel tubes, not He said worse than the national standard seamless quality. In the non-standard steel pipe production, some with national standard seamless steel tube or round as production, because of the small sales volume, prices tend to be higher than the normal national standard seamless steel pipe, but there are drawbacks non-standard seamless steel pipe, because there is no fixed standard requirements, steel, and some manufacturers to use two seamless steel scrap or defective as seamless tube, thick-walled pipe, so the price is cheaper. So often non-standard seamless steel price instability, large diameter steel pipe, product quality is uneven. Non-standard steel pipe commonly used materials are: 20 #, 45 #, 16Mn (Q345A, B, C, D, E) 27siMn, 20cr, 40cr Polygram and other Liaocheng Steel Pipe Manufacturing Co., Ltd. can produce diameter 4mm-1420mm, wall thickness of 1mm-50mm, length 3m-14m, the material 20 #, 16Mn, Q235B, Q345BCDE alloy steel, stainless steel high-grade steel can manufacturing, various non-standard models of pipe wall thickness can reach more than 1,000 kinds of products are widely used major projects in the oil, gas, steel, thermal power generation, shipbuilding, foundation piling. Liaocheng in Shandong Steel Pipe Manufacturing Co., Ltd. Main Polygram: alloy tube: 12Cr1MoVG15CrMoG10CrMo910Cr5Mo1Cr5MoCr9MoWB36P11P12P22P5P91T91 T11T12T22T5T2P5SA213T91A335P91SA213T92A335P9213CrMo441Cr11MoV cryo tubes; high-pressure boiler tubes within A333GR.6A333GR.3A333GR.1A333GR.716MnDG16MnDQ345DQ345CQ345EQ345B thread; 20GSA-106BA53-BSY45.8-111GB5310GB3087 oil cracking tube; 12Cr1MoV15CrMoCr5Mo1Cr5MoP520G16MnGB9948- 2006 Hastelloy tube: C276C22 alloy according to what classification? Iron as the basic elements, adding one or more reinforcing steel alloying elements, called alloy. Classification of alloy steels have many of the most common methods are the total amount of alloying elements in steel classification and by the use of steel two ways to classify, according to the steel alloy elements of total points, then there is a low alloy steel, alloys steel and high alloy steel. Press steel zoning can be divided into structural steel, tool steel, tool steel, stainless steel, acid-resistant steel and so on, can consult the specific Liaocheng in Shandong Steel Pipe Manufacturing Co., Polygram Learn more detailed information. Thick-walled steel pipe, 20 # steel, steel 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.