The shortcoming of the internal scab of the hot continuous-rolled seamless steel pipe is that there are dents similar to the size of soybean grains on the inner surface of the seamless steel pipe, and most of the scabs contain dark red or dark gray dirt. The influencing factors of internal scab are: metal oxide removal agent, gasifier processing technology, mandrel lubrication and other factors. Below is a look at how to manipulate the inner and surface defects of seamless steel pipes:

Seamless steel pipes are very common. Commonly used seamless steel pipes are rolled from ordinary carbon structural steel, low-alloy structural steel or alloy structural steel, and are mainly used as pipelines or structural parts for conveying fluids. According to different uses, it can be divided i