ASTM A335 P22 Pipe is a seamless ferritic alloy steel pipe developed for elevated temperature and pressure applications. This Chrome Moly pipe contains 1.90–2.60% chromium and 0.87–1.13% molybdenum, delivering excellent resistance to oxidation, corrosion, and thermal fatigue. It is widely used in boilers, pressure vessels, power generation systems, and heat exchangers.

The pipe is manufactured by hot-rolled or cold-drawn processes followed by controlled heat treatment. It is well-suited for bending, flanging, fusion welding, and requires preheating (approx. 200°C) and PWHT for optimal performance. Available in sizes from 1/2” to 24” (DN15–DN600), wall thickness from SCH 40 to SCH 160, and standard/custom lengths up to 12 meters.

Conforming to ASTM A335/ASME SA335 standards, each pipe undergoes rigorous testing including tensile strength, flattening, hardness, hydrostatic and nondestructive testing to ensure durability in demanding environments. Surface coatings like varnish, 3LPE, or FBE are available.

Compared to P11 or P5 grades, P22 pipes offer enhanced performance for prolonged service life under high thermal stress and pressure, especially in superheater tubes, reheater coils, and petrochemical process piping. They are also compatible with pipe fittings manufactured under ASTM A234 WP22.

P22 Seamless Alloy Steel Pipes are a reliable solution for high-efficiency industrial systems, helping reduce maintenance downtime and operational risks in aggressive thermal environments.