Alloy Steel P91 Pipes Supplier
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ASTM A335 P91 Pipe supplier, SA335 Pipe Materials
ASME A335 P91 Pipe stockist, ASTM A335 P91 Welded Pipe
Solitaire Steel is a trusted supplier of P91 pipes, offering top-grade P91 material for various industries. With years of experience, the company delivers high-quality Alloy Steel P91 pipes crafted from premium raw materials. The manufacturing process is managed by skilled professionals, ensuring every product meets customer requirements. Equipped with advanced facilities, Solitaire Steel can produce P91 pipes in diverse sizes and dimensions, catering to a wide range of applications.
Features and Manufacturing of P91 Pipes
Alloy Steel P91 seamless pipes are highly valued for their exceptional resistance to chloride-induced corrosion, making them suitable for use in saltwater environments. These pipes are dimensionally accurate and meet stringent tolerance levels, ensuring reliable performance. Manufactured according to ASME SA335 standards, the process involves cold drawing or hot finishing, followed by heat treatment. This treatment includes normalizing at 1050 °C, air cooling at 200 °C, and tempering at 760 °C. These procedures enhance the forming, bending, and welding properties of P91 pipes, making them highly versatile in industrial applications.
Advantages of P91 Material
Known for its tensile strength, durability, and resistance to corrosion, P91 material is designed to withstand high temperatures without compromising performance. With a tensile strength of 415 MPa and yield strength of 205 MPa, it is ideal for demanding conditions. The addition of chromium and molybdenum improves oxidation resistance and enhances overall strength. Whether in seamless, welded, square, or rectangular forms, P91 pipes are preferred for applications requiring reliability and efficiency, such as power plants, heat exchangers, and petrochemical facilities.
P91 Pipe Material Specification
| Type | Seamless / ERW / Welded / Fabricated |
| Standard | ASTM A335 P91, SA335 P91 (with IBR Test Certificate) |
| Size | 1/2” NB to 36” NB |
| Length | Standard Double & In Cut length also. |
| Schedules | SCH 40, SCH 80, SCH 160, SCH XS, SCH XXS, All Schedules |
| Tolerance | Cold drawn pipe: +/-0.1mm
Cold rolled pipe: +/-0.05mm |
| Application | Seamless Ferritic Alloy-Steel Pipe for High-Temperature Service |
| End | Plain End, Beveled End, Treaded |
| Craft | Cold rolled and Cold drawn |
| available in Form of | Round, Square, Rectangular, Hydraulic Etc. |
| Origin | European, Japanese, Korean, US, Russian, Indian (Strictly No Chinese Material) |
| Specialized in | Large Diameter ASTM A335 P91 Pipe |
| Additional Testing | NACE MR 0175, NACE TM0177, NACE TM0284, HIC TEST, SSC TEST, H2 SERVICE, IBR, etc. |
| Thickness | 3-12mm |
Alloy Steel P91 Chemical Composition
| Alloy Steel P91 | C | Cr | Mn | Mo | P | S | Si |
| 0.08-0.12 | 8.00 – 9.50 | 0.30-0.60 | 0.85 – 1.05 | 0.020 max | 0.010 max | 0.20 -0.50 |
ASTM A335 P91 Pipe Mechanical Properties
| Tensile Strength , MPa | Yield Strength, MPa | Elongation, % |
| 585 min | 415 min | 20 min |
Alloy Steel P91 Pipe Equivalent Material
| STANDARD | UNS | WERKSTOFF NR. |
| Alloy Steel P91 | K91560 | 1.4903 |
Alloy Steel P91 Pipes Application Industries
- Off-Shore Oil Drilling Companies
- Power Generation
- Petrochemicals
- Gas Processing
- Specialty Chemicals
- Pharmaceuticals
- Pharmaceutical Equipment
- Chemical Equipment
- Sea Water Equipment
- Heat Exchangers
- Condensers
- Pulp and Paper Industry
Supply and Exporter
FAQs
A335 P91 is a ferritic alloy steel known for high strength, creep resistance, and durability. It’s also called 9 Cr 1 Mo steel or chrome-moly pipe.
A335 P91 steel is equivalent to GOST 550-75, ASTM A213, E9015-B9, ASME SA213, EN 10216-2, and NBR 5603, processed through normalization and tempering.
The wall thickness of P91 pipes ranges from 2mm to 14mm, with outer diameters and schedules varying from Sch 20 to XXS. Lengths can reach 16,000mm.
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