What is round iron? Dongguan steel wholesale small series tell you: cold drawing round iron: "cold drawing", refers to the drawing process under normal temperature, also refers to the method of applying drawing force on one end of the material to make the material through a mold hole, and the hole diameter of the mold is smaller than the diameter of the material. Cold drawn round iron refers to the round iron processed by the above methods.

　　冷拔圓鐵在材料市場上，人們一般將冷拉圓鋼和冷拔圓鐵等同，其實兩者有著完全不同的加工方式。在一般情況下人們也就按約定成俗的說法冷拉圓鋼就是指冷拔圓鐵。冷拉指的是在金屬材料的兩端施加拉力強行拉伸金屬材料，使金屬材料產生一定的塑性變形達到提高金屬材料屈服點強度和延伸材料長度的目的。

　　In the material market, people generally equate cold drawn round steel with cold drawn round iron, in fact, they have totally different processing methods. In general, people also according to the conventional saying that cold drawn round steel refers to cold drawn round iron. Cold drawing refers to the application of tensile force on both ends of metal materials to stretch metal materials, so that metal materials produce certain plastic deformation to improve the yield point strength of metal materials and extend the length of materials.

　　冷拔加工使材料除了有拉伸變形外還有擠壓變形，而冷拉加工材料則只有拉伸變形，所以經冷拔加工的材料要比經冷拉加工的材料性能更好些。冷拔加工一般要在專門的冷拔機上進行，冷拉則簡單得多。

　　Cold drawing process makes materials have extrusion deformation in addition to tensile deformation, while cold drawing process materials only have tensile deformation, so the properties of materials processed by cold drawing process are better than those processed by cold drawing process. Cold drawing is generally carried out on a special cold drawing machine, while cold drawing is much simpler.