The shaft 45 steel seamless pipe shaft parts are commonly used materials, it is cheap quenching (or normalized) after, can get better cutting performance, and can obtain higher strength and toughness and other mechanical performance, seamless steel pipe manufacturers, surface hardness after quenching up to 45 ~ 52HRC. 40Cr alloy structural steel for medium precision and high speed shaft parts, small diameter seamless steel pipe, type of steel after quenching and quenching, and has good mechanical properties. GCr15 bearing steel and spring steel 65Mn, after quenching and surface high-frequency hardening, surface hardness of up to 50 ~ 58HRC, and has high fatigue resistance and good wear resistance, can be manufactured with high accuracy axis. Precision machine tool spindle (eg grinding wheel axis, coordinate boring spindle) can be used 38CrMoAIA nitrided steel. This steel is quenched and surface nitriding, not only can get a high surface hardness, but also to maintain a softer core, and therefore impact resistance and toughness. Compared with the case hardening steel, thick-walled seamless steel tubes, which have heat deformation small, high hardness properties. No. 45 steel is widely used in machinery manufacturing, seamless, very good mechanical properties of this steel. But this is a medium carbon steel, hardening performance is not good, 45 steel can be hardened to HRC42 ~ 46. So if you need a surface hardness, but also hopes to play 45 # steel superior mechanical properties, often 45 # steel surface carburizing, so you can get the required surface hardness. 45 # seamless steel weight formula: [(OD - Wall Thickness) * Thickness] * 0.02466 = kg / m (weight per meter) alloy tube (Alloy pipe) is a seamless steel pipe, alloy tube points the structure seamless pipe and tube high-pressure heat-resistant alloy. The main different alloy tube production standards and the industry, to be annealed quenched and tempered alloy tube change its mechanical properties. To achieve the desired processing conditions. Its performance with a value higher than the average of seamless varied, the chemical composition of the alloy tube containing Cr is more, high temperature, low temperature resistance, corrosion resistance. Carbon seamless pipe free of alloy composition or alloy composition rarely, alloy pipe in the petroleum, aerospace, chemical, electric power, boilers, military and other industries use more widely because the mechanical properties of the alloy tube of many changes in good adjustments. Implementation of standards China National Standard GB / T8162-2008GB / T8163-2008GB3087-2008GB6479-2000GB9948-2006GB5310-2008ASME SA210 - American Boiler and Pressure Vessel Code ASME SA213 - American Boiler and Pressure Vessel Code DIN17175 - German industrial standard small-caliber seamless steel pipe industry virtues (online consultation), seamless by virtue Liaocheng Industry Co., Ltd. Liaocheng virtue Pipe Co., Ltd. (www.meidegc.com) (www.meidegc.com) (www.mdwfg.com) (www.mdggc.com) Shandong Liaocheng, steel leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In virtue tube industry leadership with the staff warmly welcome all inquiries negotiations to create the virtues of Industry a better future.