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Quality defects and prevention of oil well pipes
Quality defects of oil well pipes mainly come from three aspects: First: quality defects of the oil well pipe body itself, such as mechanical properties, internal pass, weighing, etc. of the pipe body that do not meet the requirements; Second: quality defects of oil well pipes...Read more -
Why is the surface of 304 stainless steel plate rough after deep drawing
After 304 stainless steel plate is stretched and formed, its surface sometimes appears rough, which is called the orange peel phenomenon. As the name implies, the surface texture is like orange peel, and it feels a bit rough to the touch. This is different from the smooth surf...Read more -
What is the purpose of pickling seamless steel pipes
Pickling and passivation of seamless steel pipes is a chemical reaction. First, the pickling solution can remove the scale and rust on the surface of steel, and the passivation process is completed at the same time. It can effectively prevent the oxidation of seamless steel pi...Read more -
Analysis and solution of pipe end defects of pre-finishing spiral seam welded pipe
Pre-finishing welding process The process of pre-finishing welding production: raw material inspection → feeding inspection → unwinding, butt welding → plate ultrasonic automatic flaw detection → milling edge → welded pipe forming → forming inspection → pre-welding → pipe cutt...Read more -
Preventive measures for quenching cracks in seamless steel pipes
Quenching cracks are a defect caused by stress cracking. They are caused when the internal stress of the material exceeds the fracture strength. The cause of the occurrence is very complicated. The internal stress is formed during the quenching process and has the nature of te...Read more -
Precautions for welding industrial stainless steel pipe fittings
1. To prevent corrosion due to heating, the welding time should not be too long, which is about 20% less than that of carbon steel electrodes. The arc should not be too long, the interlayer should be cooled quickly, and narrow welds are preferred. 2. Stainless steel pipe fitti...Read more -
Other methods of extending hot-processed steel pipes
Due to the limitations of billet conditions and the extension capacity of the piercing machine, the size and accuracy of the rough pipe after piercing cannot meet the user’s requirements. The rough pipe needs to be further processed. There are many methods for hot proces...Read more -
Analysis and preventive measures of seamless pipe quality objections
The main reasons for the problem are as follows: First, quality problems caused by the production process of seamless steel pipes; Second, problems in the management of the production plant (human factors); Analysis and preventive measures of seamless pipe quality objections Q...Read more -
What is the difference between a welded steel pipe and a welded spiral steel pipe
Welded steel pipe refers to a steel pipe with seams on the surface that is formed by bending steel strips or steel plates into round, square, and other shapes and then welding them. The billet used for welded steel pipes is steel plate or strip steel. Since the 1930s, with the...Read more