How to identify inferior DIN17175 17Mn4 steel pipe

As leading DIN17175 17Mn4 steel pipe supplier in China, BBN steel received a lot of complainments from clients about inferior DIN17175 17Mn4 steel pipe on the market and lack of methods to identify. In order to help clients choose relible pipe supplier, BBN steel conclude some methods to share.

First, the inferior DIN17175 17Mn4 steel pipe is easy to fold up.
Folding is a variety of broken lines formed on the surface of the 17Mn4 steel pipe, which often run through the longitudinal direction of the whole product.

Second, inferior DIN17175 17Mn4 steel pipes often have facial appearance. Because of serious wear of the groove, the surface of the 17Mn4 steel pipe is irregular and uneven. Because the manufacturers of inferior DIN17175 17Mn4 steel pipe pursue profits, the groove rolling is often the most exceeding standard.

Third, the surface of inferior DIN17175 17Mn4 steel pipe is easy to produce scars.
There are two reasons: (1). The material of the inferior and shoddy DIN17175 17Mn4 steel pipe is not uniform, and the impurity is much. (2). Counterfeit and inferior materials manufacturers are weak in guiding equipment and easy to stick to steel. These impurities tend to produce scars after biting the roller.

Above are some simply tricks to identify inferior DIN17175 17Mn4 steel pipe. For more information, welcome to communicate with BBN steel, the professional 17Mn4 steel pipe supplier and exporter.