ASME SA335 Grade P9 Alloy Steel Pipes Manufacturer, Supplier, and Exporter in India
Introduction
ASME SA335 Grade P9 Alloy Steel Pipes are seamless ferritic alloy pipes engineered for high-temperature service. These pipes are widely used in power plants, refineries, petrochemical industries, and high-pressure boilers due to their exceptional strength and heat resistance.
Mcneil Instrument stands as a leading manufacturer, supplier, and exporter of ASME SA335 P9 alloy steel pipes in India. Our precision-engineered pipes are trusted by industries worldwide for their performance, compliance, and long service life.
What Makes SA335 P9 Alloy Steel Pipes Reliable
SA335 P9 pipes are chromium-molybdenum-based alloys, combining 9% chromium and 1% molybdenum for enhanced resistance to heat, pressure, and corrosion.
- Chromium: Offers excellent oxidation and corrosion resistance, increasing longevity under thermal stress.
- Molybdenum: Boosts high-temperature strength and enhances resistance to creep and pitting.
These properties make ASME SA335 Grade P9 ideal for demanding applications involving extreme temperatures and pressures.
Manufacturing & Quality Assurance
- Raw Material Selection: Only certified alloy billets conforming to SA335 are used.
- Forming Process: Hot rolled or cold drawn seamless pipe manufacturing.
- Heat Treatment: Pipes are normalized and tempered to achieve required mechanical properties.
- Testing Procedures: Pipes undergo hydrostatic tests, ultrasonic tests, tensile tests, and chemical analysis.
- Certification: Supplied with Mill Test Certificates (EN 10204 3.1/3.2), IBR, and NACE approval (as applicable).
Technical Specifications & Mechanical Properties
| Property | Details |
| Standard | ASME SA335 / ASTM A335 |
| Grade | P9 (UNS S50400) |
| Material | Chromium-Molybdenum Steel |
| Form | Seamless Pipe |
| Heat Treatment | Normalized and tempered |
| Surface Finish | Black, Bright Annealed, Polished |
| End Connections | Beveled, Plain, Threaded |
Mechanical Properties
| Property | Value |
| Tensile Strength | ≥ 585 MPa |
| Yield Strength | ≥ 275 MPa |
| Elongation | ≥ 30% |
| Hardness | ≤ 89 HRB |
| Operating Temp | Up to 600°C |
Dimensions & Wall Thickness Chart
| Nominal Size (NPS) | Wall Thickness (SCH) |
| ½″ – 24″ | SCH 20, 40, 80, 160, XXS |
| Outside Diameter | 21.3 mm – 609.6 mm |
| Wall Thickness | 2.77 mm – 59.54 mm |
| Length | Single/Double Random, Custom |
Certifications
| Certification | Details |
| ASME SA335 / ASTM A335 | Grade compliance |
| EN 10204 3.1 / 3.2 | Mill Test Certificates |
| ISO 9001:2015 | Quality Management |
| IBR Certified | Boiler applications |
| NACE MR0175 | Sour service approval (if required) |
Available Sizes & Specifications
| Specification | Details |
| Size Range | ½″ NB to 24″ NB |
| Wall Thickness | SCH 20 to SCH XXS |
| Length | Up to 12 meters (or custom length) |
| Manufacturing | Seamless only |
| Schedule Types | SCH 20, SCH 40, SCH 80, SCH 160 |
Global Reach of Mcneil Instrument: ASME SA335 Grade P9 Pipes
- In Saudi Arabia, Mcneil Instrument is known as a trusted manufacturer of P9 alloy steel pipes used in large-scale petrochemical and power plant applications.
- In Qatar, we serve as a dependable exporter, providing P9 pipes for refineries and high-temperature pipelines.
- Industries in Nigeria rely on Mcneil as a reliable supplier of P9 pipes for boilers and heat exchanger systems.
- As a professional exporter in Ghana, we support the construction of energy and thermal utility infrastructures.
- In Texas, Mcneil acts as a recognized manufacturer and supplier, delivering SA335 P9 pipes for oil & gas and thermal plants.
- From Chicago, we serve as a reputed exporter, supplying P9 pipes to projects requiring ASME/ASTM-certified material.
- In Malaysia, Mcneil is a known supplier and exporter, catering to marine, energy, and fabrication sectors.
- In Singapore, we are trusted as a top manufacturer and exporter, supporting offshore and process engineering clients.
- Across Brazil, Mcneil operates as a leading supplier, providing high-quality P9 alloy steel pipes for the pulp, paper, and chemical industries.
Conclusion
ASME SA335 Grade P9 alloy steel pipes offer the durability, thermal resistance, and strength necessary for critical industrial systems. As a trusted manufacturer, supplier, and exporter in India, Mcneil Instrument delivers premium-quality P9 pipes certified to perform under the most extreme conditions.
