鋼筋的分類比較復雜。因為鋼材根據生產工藝、形狀、供應形式等許多許多方面來分類。所以今天我們要介紹鋼筋的分類的相關知識。鋼筋混凝土和預應力混凝土是常用鋼筋。它的橫截面是圓形的，有時是帶有圓角的正方形。包括圓鋼筋(俗稱鋼絲和圓鋼)、帶肋鋼筋(俗稱鋼筋)。

　　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).

　　鋼筋的分類——按軋制外形分

　　Steel bar classification - according to rolling shape

　　（1）光面鋼筋：I級鋼筋（Q235鋼筋）均軋制為光面圓形截面，供應形式有盤圓，直徑不大于10mm，長度為6m~12m。（2）帶肋鋼筋：有螺旋形、人字形和月牙形三種，一般Ⅱ、Ⅲ級鋼筋軋制成人字形，Ⅳ級鋼筋軋制成螺旋形及月牙形。（3）鋼線，分低碳鋼絲和碳素鋼絲兩種及鋼絞線。（4）冷軋扭鋼筋：經冷軋并冷扭成型。

　　(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.

　　鋼筋的分類——按直徑的大型分

　　按直徑大小分鋼絲（直徑3~5mm）、細鋼筋（直徑6~10mm）、粗鋼筋（直徑大于22mm）。

　　鋼筋的分類——按力學性能分

　　按生產工藝分熱軋、冷軋、冷拉的鋼筋，還有以Ⅳ級鋼筋經熱處理而成的熱處理鋼筋，強度比前者更高。

　　鋼筋的分類——按生產工藝分

　　熱軋、冷軋、冷拉的鋼筋，還有以Ⅳ級鋼筋經熱處理而成的熱處理鋼筋，強度比前者更高