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由于鋼材中所含的元素種類和含量的不同，鋼材的也有多種分類。今天濟鋼一級代理商小編就給大家介紹一下鋼材的分類以及用途。
Because of the differences in the kinds and content of elements in steel, there are many kinds of steels. Today, Jinan Iron and steel agents at small level, I would like to introduce the classification and use of steel.

1、螺紋鋼：
1. Thread steel:
螺紋鋼的規格范圍一般在6-50mm，我們平時涉及及較多的是8mm、10mm、12mm、14mm、16mm、18mm、20mm、22mm、25mm、28mm、32mm、36mm、40mm等。國家允許的偏差：6-12mm偏差在±7%，14-20mm偏差在±5%，22-50mm偏差在±4%。螺紋鋼一般定長9m、12m，其中9m長螺紋主要用于正常的道路建設，12m長螺紋主要用于橋梁建設。
Thread steel specifications range is generally in 6-50mm, we usually involve more and more are 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm, 22mm, 25mm, 28mm, 32mm, 36mm, 40mm and so on. Deviation allowed by country: 6-12mm deviation is + 7%, 14-20mm deviation is + 5%, and 22-50mm deviation is + 4%. Thread steel generally fixed length 9m and 12M, in which 9m long thread is mainly used for normal road construction, 12m long thread is mainly used for bridge construction.
2、線材：
2, wire:
平時涉及較多的規格為6.5mm、8.0mm、10mm；此外還有5.5mm、6.0mm、7.0mm等等。目前我國生產的盤條最大直徑可達到30mm。另線材生產一般允許公差在±0.4mm。線材常見牌號一般分Q195、Q215、Q235三種。線材按軋制速度可分為：普線、高線和準高線
Usually involves more specifications for 6.5mm, 8.0mm, 10mm, in addition to 5.5mm, 6.0mm, 7.0mm, and so on. At present, the biggest diameter of wire rod produced in our country can reach 30mm. The allowable tolerance of other wire rod production is at + 0.4mm. The common grades of wire rod are generally divided into three kinds: Q195, Q215 and Q235. According to the rolling speed, the wire rod can be divided into general line, high speed line and quasi high wire line
3、盤螺：
3, disk:
建筑用鋼材，顧名思義就是像線材一樣盤在一起的螺紋鋼，一般市面上的就是6.5-8.0-10-12-14的居多。
Construction steel, as its name suggests, is like wire rod disk steel together, the general market is the majority of 6.5-8.0-10-12-14.
4、圓鋼：
4, round bar:
圓鋼圓鋼是指截面為圓形的實心長條鋼材。其規格以直徑的毫米數表示，如“ 50”即表示直徑為 50毫米的圓鋼。
Round bar or round bar refers to a solid strip of steel with a round section. The specifications are expressed in millimeters of diameter, such as "50", which means a round bar of 50 millimeters in diameter.
圓鋼分為熱軋、鍛制和冷拉三種。熱軋圓鋼的規格為5.5-250毫米。其中：5.5-25毫米的小圓鋼大多以直條成捆供應，常用作鋼筋、螺栓及各種機械零件；大于25毫米的圓鋼，主要用于制造機械零件或作無縫鋼管坯。
Round bar is divided into three parts: hot rolling, forging and cold drawing. Standard Specification for hot rolled round steel is 5.5-250 mm. Of them: 5.5-25 mm small round bars are mostly supplied by straight strips. They are used as reinforcing bars, bolts and various mechanical parts. They are more than 25 millimeters of round steel. They are mainly used in the manufacture of mechanical parts or seamless steel tube billets.
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