Product quality, supply full, reasonable price, prompt delivery, in good faith, the principle of mutual benefit, invites new and old customers come to visit us. I solemnly promise to you: to ensure the best quality gcr15 precision light tube, at the lowest price, the best service, to acknowledge the new and old customers. The library does not have the specifications in advance telephone orders, ensure timely arrival. Virtues of entrepreneurship: pragmatism, innovation, unity virtue Enterprise Mission: quality first, honesty virtues service concept: customer first, intentions virtues philosophy: innovative thinking ahead, scientific management leadership, integrity management leader in this, the company manager with All employees will be with a good reputation and solid strength, quality products, low prices and service to customers. Like the company has always given care, support and help new and old friends and customers to express my heartfelt thanks! We sincerely hope to establish long-term cooperative relationship precision light pipe, mutual benefit and common development. 1, annealed steel, the steel is heated to a certain temperature and heat for some time, and then slowly cooling it to 16mn precision light tube, called annealing. Annealed steel is steel is heated to a phase change or phase transition temperature of the part, heat treatment method after incubation of slow cooling. The purpose of annealing is to eliminate tissue defects, improve tissue homogenization makes ingredients and grain refinement to improve the mechanical properties of steel, to reduce residual stress; while reducing hardness, improved ductility and toughness, improve cutting performance. So both annealing and improve the organization in order to eliminate defects and internal stress left before the procedure, but also to prepare for the follow-up process, it is part of the annealing heat treatment of semi-finished 45 # precision light pipe, also known as pre-heat treatment. 2, normalized normalized steel is steel is heated above a critical temperature, all of the steel becomes a homogeneous austenite, and then heat treatment in air naturally cooled. It can eliminate over-eutectoid cementite steel mesh, and for normalizing hypoeutectoid steel lattice can be refined to improve the mechanical properties of the parts with less demanding instead normalizing annealing process is more economical. 3, quench hardened steel is steel is heated to above the critical temperature, holding time, and then quickly into the quenchant, its temperature suddenly decreased to a speed greater than the critical cooling rate of the rapid cooling, in order to obtain a martensite heat treatment method based unbalanced organization. Steel hardened to increase strength and hardness, but to reduce their plasticity. Quench hardening agents commonly used are: water, oil, alkali and salt solutions and the like. gcr15 precision light pipe, the virtues of Industry (certified), precision light pipe is provided by virtue of Liaocheng Industry Co., Ltd. Liaocheng virtue Pipe Co., Ltd. (www.meidegc.com) (www.meidegc.com) (www.mdwfg.com) (www.mdggc.com) Shandong Liaocheng, steel leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Industry leaders in the United States and Germany with the staff warmly welcome all inquiries negotiations to create the virtues pipe industry a better future.