The specialty of 321 stainless steel pipes is their joint-free seamless look. During the joining of two steel pipes of 321 grade, electricity is used to attain their seamless appearance. Made of a single piece of steel, offered pipes are suitable for use at around 1500 degrees C maximum temperature. 321 stainless steel pipes are suitable for jet engines, boilers, and exhaust pipelines. 321-grade steel pipes can resist the damaging effects of creep and pitting. These non-magnetic pipes are suitable for low temperature-based working conditions. To suit specific application requirements, 321-grade steel pipes have internally and externally annealed or polished surfaces.