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Alloy Steel A335 Gr.P22 Pipe is a high-performance seamless alloy steel pipe widely used in high-temperature and high-pressure applications. Designed according to ASTM A335 standards, these pipes offer exceptional strength and durability, making them suitable for power plants, refineries, and chemical industries.
The P22 grade contains chromium and molybdenum as key alloying elements, which provide excellent resistance to corrosion, oxidation, and thermal stress. This makes A335 Gr.P22 pipes ideal for boilers, superheaters, heat exchangers, and other high-temperature process systems.
A335 P22 pipes deliver excellent mechanical performance, making them ideal for high-stress, high-temperature service. They possess a minimum tensile strength of 415 MPa and a minimum yield strength of 205 MPa, with an elongation of about 30%. These properties ensure superior flexibility, toughness, and durability under thermal and mechanical stress, preventing deformation or failure during long-term service.
Alloy Steel A335 Gr.P22 pipes are manufactured using a seamless hot-forming process followed by controlled heat treatments such as normalizing, quenching, and tempering. This ensures a refined grain structure, improved ductility, and high mechanical integrity. The seamless design eliminates weak points like weld joints, ensuring uniform strength and leak-free performance under extreme operating pressures and temperatures.

Our Alloy Steel A335 Gr.P22 Pipes undergo stringent quality control tests to ensure reliability and performance. They are available in various sizes, diameters, and wall thicknesses to meet different industrial requirements, including both standard and customized dimensions.
These pipes exhibit superior mechanical properties, including high tensile strength, yield strength, and hardness, even under extreme operating conditions. They can be welded, fabricated, and machined without compromising their structural integrity, making them versatile for various industrial projects.
The high chromium and molybdenum content in A335 P22 pipes provide outstanding resistance to oxidation, scaling, and corrosion, even in aggressive environments. These pipes perform reliably in steam, flue gas, and high-temperature applications where oxidation and carburization are common concerns. Their superior resistance to hot corrosion makes them ideal for power plants and refinery service lines.
Alloy Steel A335 Gr.P22 pipes are extensively used in industries requiring reliable performance at elevated temperatures. Common applications include boiler tubes, heat exchangers, reheater lines, superheater tubes, and steam pipelines. These pipes are widely utilized in power generation plants, refineries, petrochemical plants, and process industries where operational safety and longevity are vital.
Specification Table
Specification | Details |
---|---|
Standard | ASTM A335 / ASME SA335 |
Grade | P22 |
Type | Seamless Alloy Steel Pipe |
Material | Chromium-Molybdenum Alloy Steel |
Applications | Power plants, boilers, superheaters, heat exchangers, chemical plants |
Temperature Range | Up to 600°C (1112°F) |
Pressure Range | High-pressure applications as per design requirements |
End Finish | Plain End (PE), Threaded End (TE), Beveled End (BE) |
Form | Pipe, Tube |
Length | Random or customized lengths as per client requirements |
Testing & Certification | Material Test Certificate (MTC), NDT (Ultrasonic / Radiography), Hydrostatic Test |
Chemical Composition (Typical ranges for SSS32760)
Note: Values are typical ranges. Final composition will be confirmed on MTC provided per lot.
Element | Composition (%) |
---|---|
Carbon (C) | 0.05 - 0.15 |
Manganese (Mn) | 0.30 - 0.60 |
Phosphorus (P) | ≤ 0.025 |
Sulfur (S) | ≤ 0.015 |
Silicon (Si) | 0.10 - 0.35 |
Chromium (Cr) | 1.90 - 2.60 |
Molybdenum (Mo) | 0.85 - 1.05 |
Nickel (Ni) | ≤ 0.40 |
Copper (Cu) | ≤ 0.40 |
Vanadium (V) | 0.08 - 0.15 |
Mechanical Properties (Typical)
Property | Value |
---|---|
Tensile Strength (UTS) | 485 - 620 MPa (70 - 90 ksi) |
Yield Strength (YS) | 205 MPa min (30 ksi) |
Elongation (in 50mm) | ≥ 20% |
Hardness | ≤ 217 HB (Brinell Hardness) |
Impact Test (Charpy V-Notch) | 27 J at -29°C (-20°F) |
Equivalent Grades
Standard | Equivalent Grade |
---|---|
ASTM | A335 P22 |
ASME | SA335 P22 |
DIN | 1.7335 / 13CrMo4-5 |
EN | 13CrMo4-5 |
JIS | STPA22 |
IS / BIS | IS 1239 P22 Equivalent |
Dimension & Weight Chart (Selected common sizes)
Below is a representative chart showing outside diameter, wall thickness, inside diameter, cross-sectional area of metal and calculated weight per metre (kg/m). Values are calculated using density = 7.93 g/cm³ and are for guidance — use actual MTC values for procurement & engineering.
Nominal Pipe Size (NPS) | Outer Diameter (OD) mm | Wall Thickness (WT) mm | Schedule | Weight per Meter (kg/m) |
---|---|---|---|---|
1/2" | 21.3 | 2.77 | STD | 1.68 |
3/4" | 26.7 | 2.87 | STD | 2.18 |
1" | 33.4 | 3.38 | STD | 3.08 |
1 1/4" | 42.2 | 3.56 | STD | 4.20 |
1 1/2" | 48.3 | 3.68 | STD | 5.10 |
2" | 60.3 | 3.91 | STD | 6.90 |
2 1/2" | 73.0 | 4.55 | STD | 9.40 |
3" | 88.9 | 5.54 | STD | 13.00 |
4" | 114.3 | 6.02 | STD | 19.20 |
6" | 168.3 | 6.55 | STD | 31.90 |
8" | 219.1 | 7.11 | STD | 50.00 |
10" | 273.0 | 7.62 | STD | 72.50 |
12" | 323.9 | 8.18 | STD | 97.20 |
Types Of Alloy Steel A335 Gr.P22 Pipes and Tubes

SS S32760 Seamless Pipe

SS S32760 Welded Pipe

SS S32760 ERW Pipe

SS S32760S EFW Pipe

Low Temperature Carbon Steel A333S Seamless Tube

S32760H Super Duplex Steel Welded Tube

S32760 Super Duplex Steel Capillary Tube

S32760H Super Duplex Steel Heat Exchanger Tubes
Frequently Asked Questions (FAQ)
Q1: What is Alloy Steel A335 Gr.P22 Pipe?
A1: Alloy Steel A335 Gr.P22 Pipe is a seamless high-performance alloy steel pipe designed for high-temperature and high-pressure applications in power plants, refineries, and chemical industries.
Q2: What are the key applications of A335 Gr.P22 Pipe?
A2: These pipes are widely used in boilers, superheaters, heat exchangers, petrochemical plants, and other high-temperature process systems.
Q3: What is the chemical composition of A335 Gr.P22 Pipe?
A3: The pipe contains Carbon (0.05-0.15%), Chromium (1.90-2.60%), Molybdenum (0.85-1.05%), Manganese (0.30-0.60%), and small amounts of Silicon, Nickel, Copper, Vanadium, Phosphorus, and Sulfur.
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