Cangzhou Bohai Steel Tube Co., Ltd. specializes in producing elbow its total alloy containing <3%. 300,350,400 divided by the intensity and 450MPa and other four levels. There are Q295, Q345, Q390, Q420, Q460. : "Q" is the yield of the "Qu" pinyin word uppercase first, followed by figures for grades minimum yield point (σs) value, followed by the symbol is in accordance with the steel impurity elements (sulfur, phosphorus) content by high accompanied by changes to the low carbon, manganese and is divided into A, B, C, D four and so on. Where A, B grade steel 16Mn usually called Cangzhou Bohai Steel Tube Co., Ltd. specializes in elbow 12cr1mov introduction ① steel beginning of the two numbers indicate the carbon content of steel, the average carbon content of the very few that, as 40Cr, 25Cr2MoVA alloy tube ② the main alloying elements in steel, in addition to individual micro-alloying elements Minister radius steel elbow, usually a few percent. When the average alloy content <1.5%, steel, generally marked only element symbols steel elbow, not marked content, but prone to cause confusion wholesale alloy steel elbow, in exceptional circumstances, after the element symbol can also be marked with the number "1", such as steel, "12CrMoV" and "12Cr1MoV", the former chromium content of 0.4-0.6%, which is 0.9-1.2% alloy steel elbow 45 degrees, the same as all of the remaining ingredients. When the average content of alloying elements ≥1.5%, ≥2.5%, while ≥3.5% ......, in the back of the element symbols should be marked content, can be expressed as the corresponding 2,3,4 ...... etc. For example 18Cr2Ni4WA. Wholesale steel elbow, Cangzhou Bohai (certified), alloy elbow Ltd provided by Cangzhou Bohai fittings. Cangzhou Bohai Pipe Fittings Co., Ltd. (www.czbh628.com) (www.hbbh628.com) is an industry leader in Cangzhou, Hebei, three, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customers needs. Cangzhou Bohai leadership with the staff warmly welcome all inquiries negotiations to create a better future Cangzhou Bohai.