HSB335巷道支护用热轧螺旋钢筋的开发

DEVELOPMENT OF HOT ROLLED TWISTED STEEL BAR HSB335 FOR STEMPLE SUPPORT

介绍了一种新型巷道用支护材料—— HSB335热轧螺旋钢筋的主要特点、重要参数 ,如 :钢筋的公称直径、公称截面面积、理论重量及螺旋钢筋外形具体尺寸 ;工艺设计孔型示意情况 。

The main characteristics, key parameters(the rational diameter, sectional area and theoretical weight and size) and pass schedule of new hot rolled spiral steel bar HSB335, are briefly introduced. The difficulties in production and counter measures are described.