Seamless steel pipes are much higher than welded pipes in terms of corrosion resistance and pressure and high temperature resistance. With the improvement of welded pipe manufacturing process, mechanical properties and mechanical properties are gradually approaching seamless pipes. The production process of seamless pipe is more complicated, and its price is more expensive than welded pipe.
Based on the characteristics and differences of stainless steel seamless pipes and welded pipes, reasonable choices should be made during application to achieve economical, beautiful and reliable effects:
1. When used as decorative pipes, product pipes, and prop pipes, generally good surface effects are required, and stainless steel welded pipes are usually used;
2. For generally lower pressure fluid transportation, such as low pressure systems such as water, oil, gas, air, and heating hot water or steam, stainless steel welded pipes are usually used;
3. For pipelines used in industrial engineering and large-scale equipment to transport fluids, as well as pipelines that require high temperature, high pressure, and high strength on power plants and nuclear power plant boilers, stainless steel seamless pipes should be used;
4. Stainless steel welded pipes are generally used for liquid transportation below 0.8MPa, and seamless pipes can be used for liquid transportation above 0.8MPa. If the pressure requirements are not high, it will be more economical to use welded pipes.
