Will the cold drawn tube rust?

- May 06, 2019-

The cold drawn tube is made on the basis of cold drawing. Because the temperature of the cold drawn tube is relatively high, the effect in long-term use and continuous development is relatively large, and it cannot be deformed enough. It can be said that the range and frequency of use of cold drawn tubes in steel pipes are relatively large. The cold drawn tube will not rust according to the processing steps and processing procedures, but due to improper maintenance and improper maintenance, the use of cold drawn tubes is also rusting in life. For specific reasons, we will analyze it for everyone:


Why is the cold drawn tube rusted? When the brown rust spot (dot) appears on the surface of the cold drawn tube, people are very surprised: "The cold drawn tube is not rusted, the rust is not cold drawn, it may be There is a problem with steel." In fact, this is a one-sided misconception about the lack of understanding of cold-drawn tubes. Cold drawn tubes will also rust under certain conditions.

Cold drawn tube


Cold drawn tubes have the ability to resist atmospheric oxidation - that is, rust, and also have the ability to corrode in acids, alkalis, and salts - that is, corrosion resistance. However, the degree of corrosion resistance varies with the chemical composition of the steel itself, the state of interaction, the conditions of use, and the type of environmental medium. For example, 304 steel pipe has absolutely excellent rust resistance in a dry and clean atmosphere, but it is moved to the coastal area, and it will soon rust in sea fog containing a lot of salt; while 316 steel pipe will perform. good. Therefore, it is not any cold drawn tube that is resistant to corrosion and rust in any environment.


For the cold drawn pipe, it is necessary to continuously improve the performance of each part and promote the continuous development of the cold drawn pipe. For the common performance, it is necessary to continuously ensure good results, pay attention to the usual maintenance and maintenance. When rust occurs, pay attention to the way and method of rust removal, and also carry out the correct removal of rust!