Chrome Moly Piping For Corrosion And Creep Resistance
Astm a335 p22 seamless pipe delivers excellent corrosion resistance and creep strength, ideal for high-temperature boiler pipeline protection in power plants and petrochemical industries.
Chrome Moly Piping For Corrosion And Creep Resistance
Astm a335 p22 seamless pipe delivers excellent corrosion resistance and creep strength, ideal for high-temperature boiler pipeline protection in power plants and petrochemical industries.
ASTM A335 P22 Pipe is a seamless ferritic alloy steel pipe designed for high-temperature and high-pressure service. With a composition of 1.90–2.60% chromium and 0.87–1.13% molybdenum, this Chrome Moly Pipe provides excellent oxidation and corrosion resistance, making it ideal for boilers, power plants, refineries, and petrochemical facilities.
The pipe is manufactured through hot-rolling or cold-drawing processes and undergoes specific heat treatment to achieve optimal mechanical properties. It is suitable for bending, flanging, and fusion welding. Preheating (around 200°C) and post-weld heat treatment (PWHT) are recommended to ensure weld integrity and avoid cracking.
ASTM A335 P22 alloy pipes are available in sizes ranging from 1/2” to 24” (DN15–DN600) with wall thicknesses from SCH 40 to SCH 160. Standard and custom lengths up to 12 meters are available. Surface coatings such as varnish, 3LPE, or FBE can be applied to improve durability and corrosion resistance. The pipe ends can be supplied as plain, beveled, or threaded for easier installation.
These seamless alloy steel pipes meet the requirements of ASTM A335/ASME SA335 standards and undergo stringent quality tests such as tensile, flattening, hardness, hydrostatic, and nondestructive inspections.
Compared with P11 and P5 grades, P22 offers enhanced performance for long-term operation in high-pressure and high-temperature environments. It is also widely used in producing elbows, tees, reducers, and other pipe fittings under ASTM A234 WP22 standards, ensuring compatibility in complex industrial piping systems.
ASTM A335 P22 Pipes address critical industrial needs such as thermal fatigue resistance, erosion control, and corrosion protection in steam pipelines and superheaters. Their robust chemical structure, dimensional flexibility, and exceptional service performance make them a cost-effective and long-lasting solution for demanding applications.
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 alloy steel pipe provides exceptiona...
Alloy steel a335 p22 pipes offer excellent corrosi...
Seamless ferritic alloy steel p22 pipe, compliant ...
