Introduction
ASME SA335 Grade P11 alloy steel pipes are designed to withstand extreme pressure and temperature conditions, making them ideal for high-temperature services such as power plants, oil refineries, and petrochemical processing units. Known for their enhanced creep strength and thermal stability, P11 pipes are the go-to solution for demanding industrial applications.
Mcneil Instrument is a trusted manufacturer, supplier, and exporter of ASME SA335 Grade P11 alloy steel pipes in India. With a focus on precision, quality assurance, and global compliance, we deliver products tailored to the most challenging industrial requirements.
Why Choose ASME SA335 Grade P11 Pipes?
ASME SA335 P11 is a seamless ferritic alloy steel pipe grade formulated for elevated temperature service. The key alloying elements—chromium (1.00–1.50%) and molybdenum (0.44–0.65%)—significantly boost oxidation resistance, creep strength, and structural integrity in high-heat and high-pressure environments.
Key Features:
- Superior strength and stability at high temperatures
- Excellent resistance to corrosion and oxidation
- Outstanding thermal conductivity and weldability
- Longevity in power generation, refineries, and chemical plants
Technical Specifications & Mechanical Properties of ASME SA335 Grade P11 Alloy Steel Pipes
| Property | Details |
| Standard | ASME SA335 / ASTM A335 |
| Grade | P11 (UNS K11597) |
| Manufacturing Process | Seamless |
| Heat Treatment | Normalized and Tempered |
| Surface Finish | Black, Bare, Varnished, or Galvanized |
| End Type | Beveled / Plain / Threaded |
| Applications | Boilers, Pressure Vessels, Heat Exchangers |
ASME SA335 Grade P11 Alloy Steel Pipes Mechanical Properties
| Property | Value |
| Tensile Strength | ≥ 415 MPa |
| Yield Strength | ≥ 205 MPa |
| Elongation | ≥ 30% |
| Hardness | ≤ 163 HBW |
| Operating Temperature | Up to 600°C (continuous) |
Dimensions & Wall Thickness Chart of ASME SA335 Grade P11 Alloy Steel Pipes
| Nominal Pipe Size (NPS) | Wall Thickness (Schedule) |
| ½″ – 24″ | SCH 40, SCH 80, SCH 160, XXS |
| Dimensional Standards | ASME B36.10M, B36.19M |
| Tolerances | As per ASTM A999 / A530 |
ASME SA335 Grade P11 Alloy Steel Pipes Certifications
| Certification | Details |
| ASME SA335 / ASTM A335 | Material Compliance |
| EN 10204 3.1 / 3.2 | Mill Test Certification |
| IBR Approved | For Indian Boiler Regulation Applications |
| NACE MR0175 | For Sour Service Conditions |
| ISO 9001:2015 | Quality Management Compliance |
Available Sizes & Specifications of ASME SA335 Grade P11 Alloy Steel Pipes
| Pipe Size Range (NPS) | Schedule / Thickness | Length |
| ½″ to 24″ | SCH 40 to SCH XXS | 5 to 12 meters (or custom) |
| Custom Sizes | On Request | Based on Project Specs |
Global Reach of Mcneil Instrument: ASME SA335 P11 Alloy Steel Pipes
- In Saudi Arabia, Mcneil Instrument is a trusted manufacturer of ASME SA335 P11 pipes used extensively in high-efficiency boiler systems and petrochemical complexes.
- In Qatar, we are a leading exporter, supplying seamless P11 alloy steel pipes for refinery upgrades and thermal projects.
- In Nigeria, Mcneil Instrument acts as a dependable supplier of ASME SA335 P11 pipes, supporting power plants and high-pressure steam pipelines.
- As an experienced exporter in Ghana, we deliver P11 alloy steel pipes customized for heat exchangers and pressure vessels.
- In Texas, we serve as a reputed manufacturer and supplier, providing P11 pipes to thermal plants and process facilities meeting stringent ASME and ASTM standards.
- From Chicago, we operate as a reliable exporter, supplying precision-engineered P11 pipes to the energy and chemical sectors.
- In Malaysia, Mcneil is recognized as a top supplier and exporter of ASME SA335 P11 pipes for process piping in petrochemical industries.
- In Singapore, we are a leading manufacturer and exporter, delivering P11 pipes for offshore oil platforms and marine boilers.
- Across Brazil, we support refinery and fertilizer industries as a long-standing supplier of P11 alloy steel pipes.
Conclusion
ASME SA335 Grade P11 alloy steel pipes deliver consistent strength, corrosion resistance, and performance in demanding environments. As a seasoned manufacturer, supplier, and exporter, Mcneil Instrument guarantees reliable, certified, and tailored pipe solutions for clients across the globe.
