As we all know, DIN1629 St44.0 steel pipe users are usually pay attention to its quality. But there are also many inferior DIN1629 St44.0 steel pipes on the market. So that customers should choose a reputable DIN1629 St44.0 steel pipe supplier. At the same time, it is necessary to know some methods to identify the DIN1629 St44.0 steel pipe.
First of all, the inferior DIN1629 St44.0 steel pipe is easy to scratch. The reason is that the equipment of the inferior DIN1629 St44.0 steel pipe manufacturer is simple and rough, and is prone to burrs and scratches on the steel surface. Deep scraping reduces the strength of the ST45.8 steel pipe.
Secondly, the inferior DIN1629 St44.0 steel pipe has no metallic luster. Its light is red or similar to pig iron. The reason is that the temperature of inferior tube rolling is not standard. The temperature of the steel is visually inspected and therefore cannot be rolled according to the specified austenite region, and the properties of the steel naturally cannot reach the standard.
In addition, the inferior quality DIN1629 St44.0 steel pipe material contains more impurities, the steel density is small, the size is very poor, so in the absence of vernier calipers, can be weighed and inspected.
Katalor has rich experience in the exporter of DIN1629 St44.0 steel pipe for more than 10 years. And the important is we have the high quality DIN1629 St44.0 steel pipe for customers. We can supply DIN1629 St44.0 steel pipe with different size to meet your any requirements. Welcome to contact us!
