Jiujiang supply large diameter Q345B square and rectangular tube manufacturers (price, quality, wholesale) Rectangular Pipe manufacturers Q345B square and rectangular tube factory / best quality square steel pipe / square and rectangular tube optimal price / Precision Rectangular Pipe Factory Cangzhou Yan Thai Steel Pipe Ltd. specializes in producing all kinds of seamless square and rectangular tube 【】 【】 seamless Rectangular Pipe Performance Analysis 1. Rectangular Pipe Performance Index Analysis - Plasticity Plasticity refers to the metal under load, plastic deformation (permanent deformation ) without destroying the ability. 2 Rectangular Pipe Performance Index Analysis - Hardness Rectangular Pipe manufacturers Q345B square and rectangular tube factory / best quality square steel pipe / square and rectangular tube optimal price / Precision square steel tube manufacturers Hardness is a measure of the hardness of the metal pointer . The hardness was measured in current production method is the most commonly used is the indentation hardness method, which is pressed with a certain geometry of the head is pressed into a certain load the metal surface to be tested, according to the degree of being pressed into the measured hardness values. Commonly used methods are Brinell hardness (HB), Rockwell hardness (HRA, HRB, HRC) and Vickers hardness (HV) and other methods. Rectangular Pipe manufacturers Q345B square and rectangular tube factory / best quality square steel pipe / square and rectangular tube optimal price / Precision Rectangular Pipe factory 3. Rectangular Pipe Performance Index Analysis - Fatigue mentioned earlier strength, ductility, hardness metal loads in static mechanical properties of the pointer. In fact, many machine parts are working under cyclic loading, in part under such conditions will produce fatigue. Purposes should also have other cross-sectional shapes of the shaped pipe. Our products have been sold to the following cities: Zhejiang, Shanghai, Tianjin, Liaoning, Yunnan, Guangxi, Guangdong, Anhui, Beijing, Xinjiang, Chongqing, Hunan, Hubei, Hebei, Henan, Ningxia, Qinghai, Gansu, Shaanxi, Tibet, Guizhou , Sichuan, Hainan, Heilongjiang, Inner Mongolia, Shandong, Fujian, Jilin, Shanxi, Jiangxi, Jiangsu, Shanghai, Nanjing, Beijing, Shijiazhuang and other business philosophy: the same product than the quality, the same quality than price, the same price than service, the same service than credibility. "welcome new and old customers call to discuss, Yan Thai staff dedicated to provide you with gold rectangular tube products!