Chrome Moly Piping For Corrosion And Creep Resistance
Seamless ferritic alloy steel p22 pipe, compliant with astm a335, delivers superior corrosion and creep resistance, ideal for high-temperature boiler pipeline protection in power plants and petrochemical industries.
Chrome Moly Piping For Corrosion And Creep Resistance
Seamless ferritic alloy steel p22 pipe, compliant with astm a335, delivers superior corrosion and creep resistance, ideal for high-temperature boiler pipeline protection in power plants and petrochemical industries.
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.
Operates reliably at temperatures up to 600°C, suitable for boilers, headers, and superheaters.
Chromium and molybdenum improve resistance against oxidation, scaling, and chemical attack.
Ferritic-martensitic structure provides excellent strength under high-pressure conditions.
Compatible with common welding techniques, ensuring easy field fabrication and repairs.
Sustains performance over extended exposure to elevated temperatures and thermal cycling.
Balance of performance and affordability makes P22 ideal for long-term industrial use.
The ASTM A335 P22 is manufactured from a high-quality alloy steel that offers excellent mechanical properties and resistance to high temperatures. Below are the details of its chemical composition and mechanical properties.
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.05-0.15 |
| Manganese (Mn) | 0.30-0.60 |
| Phosphorus (P) | ≤0.025 |
| Sulfur (S) | ≤0.025 |
| Silicon (Si) | ≤0.50 |
| Chromium (Cr) | 1.90-2.60 |
| Molybdenum (Mo) | 0.87-1.13 |
| Property | Value |
|---|---|
| Tensile Strength, min (MPa) | 415 |
| Yield Strength, min (MPa) | 205 |
| Elongation, min (%) | 30 (Longitudinal), 20 (Transverse) |
| Hardness, max (HBW) | 250 |
ASTM A335 P22 pipes are designed for high-temperature and high-pressure applications, offering a range of benefits that make them ideal for various industrial uses.
Ideal for operations up to 650°C, making it suitable for boilers and pressure vessels in high-temperature environments.
Chromium and molybdenum content provides excellent tensile and yield strength, allowing for reduced wall thickness.
Resists deformation over time under high pressure and temperature, ensuring long-term performance.
Chromium resists oxidation; molybdenum improves resistance to corrosive steam and sulfur-containing environments.
Supports standard welding and fabrication processes, allowing easy installation and maintenance.
Extended service life and reduced maintenance needs offer excellent value over time in industrial applications.
ASTM A335 P22 pipes are widely used in various industries due to their excellent high-temperature and
high-pressure performance.
Here are some key applications:
Utilized in boilers, superheaters, and reheaters within steam power plants due to their high-temperature resistance and durability.
Employed in refineries and chemical plants for transporting high-temperature fluids and gases, ensuring safety and efficiency.
Ideal for use in heat exchangers where thermal stability and corrosion resistance are critical under fluctuating temperatures.
Commonly used in high-pressure boilers and superheaters, offering excellent performance under extreme thermal conditions.
Applied in the extraction and processing of oil and gas, handling high-pressure and high-temperature fluids effectively.
Suitable for equipment in chemical industries where resistance to corrosive substances and high temperatures is essential.
Astm a335 p22 seamless pipe delivers excellent cor...
Astm a335 p22 alloy steel pipe provides exceptiona...
Alloy steel a335 p22 pipes offer excellent corrosi...
