ASTM A335 P15 ferritic alloy-steel pipe designed for high-temperature service, commonly known as "chrome moly" pipe (Chromium-Molybdenum all
ASTM A335 / ASME SA335 P15 is a chromium‑molybdenum alloy steel seamless pipe designed for high‑temperature and high‑pressure service applications in industrial environments. Manufactured under the ASTM A335 specification, Grade P15 contains elevated chromium and molybdenum content, providing enhanced strength, creep resistance, and heat resistance compared with standard carbon steel pipes. This makes it suitable for use in boiler tubes, heat exchangers, superheaters, and piping systems in sectors such as power generation, petrochemical, refinery, and general industry where durability and thermal stability are critical.
