What is the most common stainless steel pipe?

The most common stainless steel pipe used in various applications is ASTM A312/A358 TP 304/304L. This stainless steel grade offers excellent corrosion resistance, high strength, and good formability, making it suitable for a wide range of industries such as chemical processing, food and beverage, pharmaceuticals, oil and gas, and many others. ASTM A312 and A358 are specifications that outline the requirements for seamless and welded stainless steel pipes, respectively. TP 304/304L refers to the specific grade of stainless steel, with TP 304 being the standard grade and TP 304L indicating low carbon content for improved welding capabilities.