钢筋的分类比较复杂。因为钢材根据生产工艺、形状、供应形式等许多许多方面来分类。所以今天我们要介绍钢筋的分类的相关知识。钢筋混凝土和预应力混凝土是常用钢筋。它的横截面是圆形的，有时是带有圆角的正方形。包括圆钢筋(俗称钢丝和圆钢)、带肋钢筋(俗称钢筋)。

　　The classification of reinforcement is complicated. Because the steel according to the production process, shape, supply form and many many aspects to classify. So today we are going to introduce the classification of reinforcement. Reinforced concrete and prestressed concrete are commonly used reinforcement. Its cross section is circular, sometimes square with rounded corners. Including round bar (commonly known as steel wire and round steel), ribbed bar (commonly known as reinforcement).

　　钢筋的分类——按轧制外形分

　　Steel bar classification - according to rolling shape

　　（1）光面钢筋：I级钢筋（Q235钢筋）均轧制为光面圆形截面，供应形式有盘圆，直径不大于10mm，长度为6m~12m。（2）带肋钢筋：有螺旋形、人字形和月牙形三种，一般Ⅱ、Ⅲ级钢筋轧制成人字形，Ⅳ级钢筋轧制成螺旋形及月牙形。（3）钢线，分低碳钢丝和碳素钢丝两种及钢绞线。（4）冷轧扭钢筋：经冷轧并冷扭成型。

　　(1) plain steel bar: grade I steel bar (Q235 steel bar) is all rolled into a round section with smooth surface, and the supply form is round, the diameter is not more than 10mm, and the length is 6m~12m. : (2) the ribbed bar with spiral, chevron and crescent, three general Ⅱ, Ⅲ adult glyph, steel rolling steel rolled into a spiral and crescent Ⅳ level. (3) steel wire, low carbon steel wire and carbon steel wire two kinds and steel strand. (4) cold-rolled and twisted bar: formed by cold-rolled and cold-twisted bar.

　　钢筋的分类——按直径的大型分

　　按直径大小分钢丝（直径3~5mm）、细钢筋（直径6~10mm）、粗钢筋（直径大于22mm）。

　　钢筋的分类——按力学性能分

　　按生产工艺分热轧、冷轧、冷拉的钢筋，还有以Ⅳ级钢筋经热处理而成的热处理钢筋，强度比前者更高。

　　钢筋的分类——按生产工艺分

　　热轧、冷轧、冷拉的钢筋，还有以Ⅳ级钢筋经热处理而成的热处理钢筋，强度比前者更高