Steel industry steel steel is the material basis of industrial development, technological advances in the steel industry for steel applications created favorable conditions. The domestic steel industry, some large companies have begun development of Nanning steel building structural steel design varieties and technologies, have developed a high-strength steel and fire-resistant, weather-resistance, water, anti-lamellar tearing resistance at low temperature steel, as well as H-beam, high-performance pre-painted steel, cold-formed steel, etc., for the development of steel industry has laid a good foundation for the application. Nanning good weldability of steel construction, welding means that under certain conditions, close to the base metal and weld metal are not cracks. Welding performance refers to the use of performance on the impact toughness of the weld and heat affected zone ductility required mechanical properties of the weld and heat affected zone of not less than the mechanical properties of the steel base metal. Welding performance test method of welding processes, welding performance test method is also used to use on the nature of the use. Nanning Steel plant, steel, Guangxi Guangxi Galaxy Galaxy is provided by the metal structure Engineering Limited. Guangxi Galaxy Metal Structure Engineering Co., Ltd. (www.gxmmr.cn) strong, credible, in Nanning, Guangxi's activity room industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Guangxi Galaxy and you hand into the brilliant, for a better future!