Pretreatment process of seamless stainless steel pipe before cold bending

　　The cold bending method is to fill the 316/316L Seamless Stainless Steel Pipe with sand, and then stretch and bend it after high-temperature heat treatment. This method is ideal for bending processing.

　　The steel pipe manufacturer will introduce you to the pre-treatment process details of 316/316L Seamless Stainless Steel Pipe before cold bending,The promotion and application of high-precision cold drawn precision 316/316L Stainless Seamless Steel Pipes can save steel, improve processing efficiency, and save energy.

　　The so-called high-precision stainless steel cold drawn pipe refers to the strict precision of inner and outer diameter dimensions (tolerance range), as well as the smoothness, roundness, and straightness of the inner and outer surfaces.

　　The main technical indicators of high-precision cold drawn pipes produced by this technology meet or partially exceed the requirements of national standard GB8713-88 and international standard ISO4394/1-1980 (E). The conventional normalizing process of 316/316L Seamless Stainless Steel Pipes can completely eliminate the Weinstein structure of precision seamless steel pipes, making the matching of yield strength and tensile strength more reasonable. The yield strength ratio is oS/bo ≤ 0.78, and precision hydraulic seamless steel pipes have an elongation rate of 50 ≥ 30%. The cold forming performance is greatly improved, avoiding cold bending cracks.

　　316/316L Seamless Stainless Steel Pipe: Study on the influence of normalizing. The influence of temperature, insulation time, and cooling method on the microstructure and mechanical properties of raw materials and pipes was analyzed. The conventional normalizing process for precision seamless steel pipes was determined: heating temperature (890 ± 10) ℃, insulation for 6 minutes.