Pitting corrosion and pits are common surface quality problems in seamless pipe manufacturing. When delivering pits and potholes, if this happens, many seamless steel pipe mills will say that the quality problems of the original steel mills have caused this problem. The choice of round steel may have an impact on seamless pipe manufacturing, but it is not the final deciding factor. The real reason lies in this process-perforation.

Seamless steel pipes have two types of wall thickness accuracy problems: horizontal wall thickness accuracy and longitudinal wall thickness accuracy.

The extra height of the outer weld seam is not conducive to anti-corrosion. If the epoxy glass cloth is used for anti-corrosion during operation, the extra height of the outer weld seam will make the weld toe difficult to be pressed firmly.

it is stated that some control functions of a seamless steel pipe rolling mill can be assigned to a certain unit without considering the operation of other units on the rolling line, while other control functions are To play the role of overall coordination, unify and coordinate all the pipe rolling operation status of the pipe rolling mill, and combine them in a single system.

Surface defects (scars, pits, grooves, cracks, etc.) of the tube blank are generally inspected by artificial naked eyes (if there are special requirements, non-destructive testing methods are required), and then the defects are cleaned up.

Anti-corrosion steel pipe is a steel pipe processed with anti-corrosion technology. It can prevent or slow down chemical or electrochemical reactions during transportation and use.