马钢试制耐火 H型钢获得成功。目前国内只有马钢能够生产用于建造高层复合式住宅楼的耐火 H型钢。该产品在常温下的力学性能要求比 Q345钢种产品高 ,同时要求在 6 0 0℃的高温下 ,钢材的屈服强度不低于 2 30MPa,从而使以耐火 H型钢钢材为主体结构的建筑物其安全性大大提高。目 Masteel trial production of fire-resistant H-beam success. At present, only China Masteel can produce refractory H-section steel for the construction of high-rise compound residential buildings. The mechanical properties of the product at room temperature than Q345 steel products require high at the same time require the high temperature of 600 ℃, the yield strength of steel not less than 2 30MPa, so that the main structure of the fire-resistant H-beam steel structure of the building Its safety is greatly improved. Head