Alloy Steel A335 Gr.P11 Pipe Manufacturers in India, Alloy Steel A335 Gr.P11 Pipes Price, SS Pipe Price per kg, Alloy Steel A335 Gr.P11 Pipe pipe suppliers, Alloy Steel A335 Gr.P11 Pipes Price, Alloy Steel A335 Gr.P11 Pipe Suppliers in UAE, Alloy Steel A335 Gr.P11 Pipe Suppliers UK, Alloy Steel A335 Gr.P11 Pipe Suppliers in Saudi Arabia, Alloy Steel A335 Gr.P11 Pipe Suppliers in Qatar, Alloy Steel A335 Gr.P11 Pipe Suppliers Australia.
Alloy Steel A335 Gr.P11 Pipe is a seamless ferritic alloy-steel pipe specifically designed for high-temperature service. Manufactured in compliance with ASTM A335 / ASME SA335 standards, this grade is widely used in industries where durability, strength, and resistance to elevated temperatures are critical. The addition of chromium and molybdenum in its composition provides excellent oxidation resistance and enhances creep strength, making it a preferred choice for demanding applications.
The A335 Grade P11 pipe is primarily utilized in power generation plants, oil refineries, petrochemical units, and other high-pressure services. Its superior mechanical properties make it suitable for boilers, heat exchangers, superheaters, and piping systems that operate under extreme stress and elevated temperature conditions. With its outstanding performance in high-pressure and high-temperature environments, it plays a vital role in ensuring the efficiency and safety of industrial operations.
A335 P11 pipes are known for their impressive mechanical characteristics, including a minimum tensile strength of 415 MPa and a minimum yield strength of 205 MPa. The elongation is typically around 30%, ensuring good ductility and flexibility. These properties enable the pipes to handle pressure and temperature fluctuations effectively, making them reliable for boiler tubes, heat exchangers, and power plant applications.
The manufacturing of A335 Gr.P11 pipes involves hot forming and subsequent heat treatments like normalizing, tempering, and quenching. This seamless manufacturing process results in pipes with uniform structure, precise dimensions, and superior strength. The seamless nature eliminates weld joints, reducing the risk of leakage and enhancing safety in high-pressure and high-temperature systems.
One of the key features of Alloy Steel A335 P11 is its excellent weldability and machinability. This allows fabricators to process and install the pipes with relative ease while ensuring structural integrity. Heat treatment procedures such as normalizing and tempering can be applied to enhance its performance further. The material’s adaptability in manufacturing and maintenance makes it one of the most reliable alloy steel pipes available in the market.
In terms of specifications, A335 Gr.P11 seamless pipes are available in a wide range of sizes, schedules, and thicknesses to meet diverse application requirements. They are manufactured under strict quality control standards to ensure dimensional accuracy, surface finish, and mechanical strength. These pipes can withstand both thermal stress and pressure fluctuations, which are common in power plants and refinery systems.
The combination of chromium and molybdenum in Alloy Steel A335 Gr.P11 pipes provides excellent resistance against corrosion, oxidation, and scaling, even at elevated temperatures. This makes them ideal for service in environments involving steam, flue gases, and other aggressive media. Their stability in both reducing and oxidizing atmospheres ensures a long service life with minimal maintenance.
Alloy Steel A335 Gr.P11 pipes are extensively used in power plants, refineries, petrochemical plants, and chemical processing industries. They are ideal for high-temperature applications such as superheaters, reheater tubes, steam lines, and heat exchangers. Their capability to withstand high pressures and temperatures makes them a preferred choice in thermal and process engineering systems.
Specification Table
| Specification | Details |
|---|---|
| Standard | ASTM A335 / ASME SA335 |
| Grade | P11 |
| Type | Seamless Ferritic Alloy Steel Pipe |
| Material | Chromium-Molybdenum Alloy Steel |
| Manufacturing Process | Hot-Finished / Cold-Drawn Seamless |
| Heat Treatment | Normalized and Tempered |
| Sizes | 1/2" NB to 36" NB (Custom on request) |
| Schedules | Sch 20, 40, 80, 120, 160, XXS and Custom |
| Applications | Boilers, Superheaters, Heat Exchangers, Power Plants, Petrochemical Plants |
| Key Properties | High Creep Strength, Oxidation Resistance, Excellent Weldability |
Chemical Composition (Typical ranges for SSS32760)
Note: Values are typical ranges. Final composition will be confirmed on MTC provided per lot.
| Element | Percentage (%) |
|---|---|
| Carbon (C) | 0.05 - 0.15 |
| Manganese (Mn) | 0.30 - 0.60 |
| Phosphorus (P) | ≤ 0.03 |
| Sulfur (S) | ≤ 0.03 |
| Silicon (Si) | 0.10 - 0.50 |
| Chromium (Cr) | 0.90 - 1.20 |
| Molybdenum (Mo) | 0.45 - 0.60 |
| Nickel (Ni) | ≤ 0.30 |
| Copper (Cu) | ≤ 0.30 |
Mechanical Properties (Typical)
| Property | Value |
|---|---|
| Minimum Tensile Strength | 415 MPa (60,000 psi) |
| Minimum Yield Strength | 240 MPa (35,000 psi) |
| Elongation (in 50 mm) | ≥ 30% |
| Hardness (Brinell) | ≤ 197 HB |
| Impact Energy (Charpy V-Notch) | ≥ 27 J at 0°C (for specific sizes and heat treatment) |
| Operating Temperature | Up to 550°C (1022°F) |
| Service Application | High-temperature boilers, superheaters, heat exchangers, petrochemical piping |
Equivalent Grades
| Standard / Country | Equivalent Grade |
|---|---|
| ASTM / ASME (USA) | A335 P11 |
| EN (Europe) | 10CrMo9-10, 1.7335 |
| DIN (Germany) | 10CrMo9-10 |
| JIS (Japan) | STB11 |
| BS (UK) | BS 3059 P11 |
| IS (India) | IS 1239 Gr. P11 equivalent |
| GOST (Russia) | 15Ch2MFA |
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) | Schedule | Outer Diameter (mm) | Wall Thickness (mm) | Approx. Weight (kg/m) |
|---|---|---|---|---|
| 1/2" | 40 | 21.3 | 2.77 | 1.68 |
| 3/4" | 40 | 26.7 | 2.87 | 2.32 |
| 1" | 40 | 33.4 | 3.38 | 3.32 |
| 1 1/2" | 40 | 48.3 | 3.91 | 5.88 |
| 2" | 40 | 60.3 | 4.55 | 8.84 |
| 3" | 40 | 88.9 | 5.49 | 16.3 |
| 4" | 40 | 114.3 | 6.02 | 25.2 |
| 6" | 40 | 168.3 | 7.11 | 45.5 |
| 8" | 40 | 219.1 | 8.18 | 69.3 |
| 10" | 40 | 273.0 | 9.27 | 97.6 |
| 12" | 40 | 323.9 | 10.97 | 134.0 |
| 14" | 40 | 355.6 | 12.70 | 163.0 |
| 16" | 40 | 406.4 | 14.27 | 205.0 |
| 18" | 40 | 457.0 | 15.09 | 252.0 |
| 20" | 40 | 508.0 | 15.09 | 281.0 |
| 24" | 40 | 609.6 | 16.0 | 377.0 |
Types Of Alloy Steel A335 Gr.P11 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)
1. What is Alloy Steel A335 Gr.P11 Pipe?
Alloy Steel A335 Gr.P11 Pipe is a seamless, high-temperature, chromium-molybdenum alloy steel pipe designed for elevated-temperature service in boilers, superheaters, and heat exchangers. It conforms to ASTM A335 / ASME SA335 standards.
2. What are the main applications of A335 P11 pipes?
These pipes are widely used in power generation, petrochemical plants, and refineries. Typical applications include boilers, superheaters, heat exchangers, and high-pressure piping systems that operate at elevated temperatures.
3. What is the chemical composition of A335 Gr.P11?
The key elements include Carbon (0.05–0.15%), Manganese (0.30–0.60%), Silicon (0.10–0.50%), Chromium (0.90–1.20%), and Molybdenum (0.45–0.60%). These provide excellent high-temperature strength and oxidation resistance.
4. What are the mechanical properties of A335 P11 pipes?
Minimum tensile strength is 415 MPa, yield strength 240 MPa, elongation ≥ 30%, and Brinell hardness ≤ 197 HB. These properties make it suitable for high-temperature and high-pressure applications.
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