The application of C-section steel can be said to be quite extensive. It can not only be used as purlin and wall beam in steel structure building, but also can be combined into lightweight roof truss, bracket and other building components. No matter what kind of use, it will involve the cutting of C-section steel. Due to different cutting methods have different cutting effect, it is necessary to select the appropriate one according to the requirements of customers.

一般情况下，C型钢在钢结构中应用的话，它的切割尽可能选择在剪切机上或锯床上进行，尤其是对于薄壁型钢屋架。

Generally, if C-section steel is used in steel structure, its cutting should be carried out on shear machine or sawing machine as far as possible, especially for thin-walled steel roof truss.

Jinan C-beam mill

之所以这么建议，是因为这里要去下料要准确，易电动锯割法做为适合，不仅工效高，而且断面光滑平整、质量好，切割误差非常的小。

The reason for this proposal is that the blanking should be accurate, and it is suitable for the electric sawing method, which is not only highly efficient, but also has smooth and smooth section, good quality and very small cutting error.

C型钢也可以采用气割的方式，但为了提高气割质量，尽量采用小口径喷嘴，并在切割后用锤子轻轻敲打，使切口平整，满足各种用途的要求。跟其他冷弯型钢一样，C型钢生产过程中面临的问题是内应力的问题，由于材料存在较大的内应力，一旦投入使用的话有可能会发生变形，从而影响其使用效果。

However, in order to improve the quality of gas cutting, a small diameter nozzle should be used as far as possible. After cutting, the hammer should be used to gently tap the cut to make the cut smooth and meet the requirements of various uses. Like other cold-formed steel, the problem of C-section steel in the production process is the problem of internal stress. Due to the large internal stress of the material, once put into use, it may deform, thus affecting its use effect.

C型钢的应力没有办法避免，在冷弯C型钢的开卷、滚剪、闭卷等工艺过程中，都会增加一定的内应力，主要的是通过机械强制变形导致冷弯C型钢具有一定的应力。除此之外，冷弯C型钢如果没有喷涂底漆，那么除锈和钝化工艺也将会使得它的内应力释放出来，造成弯曲和扭变。

There is no way to avoid the stress of C-section steel. In the process of uncoiling, rolling shear and closing coil of cold-formed C-section steel, certain internal stress will be increased. The main reason is that the cold-formed C-section steel has certain stress through mechanical forced deformation. In addition, if the cold-formed C-section steel is not sprayed with primer, the rust removal and passivation process will also release its internal stress, resulting in bending and torsion.

在没有办法避免的情况下，只能通过合理的操作来减少应力的产生，作为生产厂家和用户而言，也要关注这方面的问题，确保冷弯C型钢能被广泛的运用。

In the case of no way to avoid, only through reasonable operation to reduce the stress, as manufacturers and users, should also pay attention to this issue, to ensure that cold-formed C-beam can be widely used.