Good weldability, steel structure, is that under certain conditions the welding process, the weld metal and the base material are not close to cracking. Welding performance on the use of performance refers to the impact toughness of welds and heat affected zone ductility required mechanical properties of weld metal and heat affected zone is not less than the mechanical properties of the steel base material. China's use of the welding process of welding performance test method, steel canopy, also adopted the use of the welding performance test method on the nature of the use. Not refractory heat-resistant steel, when the temperature is below 150 ℃, the steel properties change little. Thus steel suitable for hot workshop, steel plant, but the structure of the surface by the heat radiation of about 150 ℃, insulation boards to be used to protect them. Temperature steels strength and elastic modulus decreased significantly at 300 ℃ -400 ℃, the steel structure design, the temperature at about 600 ℃, the strength of steel to zero. With special needs in fireproof building, refractory steel must be protected in order to improve the fire rating. Steel, Guangxi Yinhe, steel structure designed by Guangxi Yinhe metal structure Engineering Limited. Steel, Guangxi Yinhe, steel structure design is Guangxi Yinhe metal structure Engineering Company Limited (www.gxmmr.cn) this year introduced a new upgrade, the above picture is for reference only, please call the contact page or image on this phone, For the latest information, contact: Mr. Sun.