ASTM A335 P5, P9, P11, P22, P91 Pipe Manufacturer, Supplier, and Exporter in India
ASTM A335 P5 Pipe, P9 Alloy Steel Pipe, P11 Alloy Steel Pipe, P22 Chrome Moly Pipe, P91 High Temperature Pipe, Alloy Steel Seamless Pipe, ASTM A335 Alloy Steel Pipe, High Pressure Boiler Pipe, Alloy Steel Pipe Manufacturer in India, A335 Grade P Pipes Supplier.
Mcneil Instruments is a trusted ASTM A335 P5 Pipe Manufacturer, P9 Alloy Steel Pipe Supplier, and P11, P22, P91 Pipe Exporter in India, offering high-quality alloy steel pipes. Certified under ISO 9001:2008, we provide high-quality chrome moly pipes suitable for high-temperature applications in the power, petrochemical, and energy sectors. We maintain a robust inventory and offer protective finishes including black painting, anti-corrosion oil, and galvanization for long-lasting durability.
Grades We Offer
We are recognized as a leading manufacturer and supplier of P5, P9, P11, P22, and P91 grade alloy steel pipes designed to perform in demanding environments. We supply seamless alloy steel pipes in the following ASTM A335 grades:
P5 Pipes
P9 Pipes
P11 Pipes
P22 Pipes
P91 Pipes
These pipes are known for their high toughness, wear resistance, and ability to withstand elevated temperatures. Chrome content ranges from 1.00% to 10.00%, and molybdenum from 0.44% to 1.10% depending on the grade
Technical Specifications:
Each ASTM A335 grade—P5, P9, P11, P22, and P91—is manufactured to meet global standards. We are a leading supplier and exporter of chrome moly seamless pipes in these grades.
Chemical Composition (%):
| Grade | C | Mn | P (max) | S (max) | Si | Cr | Mo |
| P5 | 0.15 max | 0.30–0.60 | 0.025 | 0.025 | 0.50 max | 4.00–6.00 | 0.45–0.65 |
| P9 | 0.15 max | 0.30–0.60 | 0.025 | 0.025 | 0.25–1.00 | 8.00–10.00 | 0.90–1.10 |
| P11 | 0.05–0.15 | 0.30–0.60 | 0.025 | 0.025 | 0.50 max | 1.00–1.50 | 0.44–0.65 |
| P22 | 0.05–0.15 | 0.30–0.60 | 0.025 | 0.025 | 0.50 max | 1.90–2.60 | 0.87–1.13 |
| P91 | 0.08–0.12 | 0.30–0.60 | 0.020 | 0.010 | 0.20–0.50 | 8.00–9.50 | 0.85–1.05 |
Mechanical Properties:
| Grade | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | Impact Energy (J) | Hardness (HB) |
| P5 | ≥ 415 | ≥ 205 | ≥ 22 | ≥ 35 | ≤ 187 |
| P9 | ≥ 585 | ≥ 275 | ≥ 30 | ≥ 35 | ≤ 250 |
| P11 | ≥ 415 | ≥ 205 | ≥ 22 | ≥ 35 | ≤ 163 |
| P22 | ≥ 415 | ≥ 205 | ≥ 22 | ≥ 35 | ≤ 163 |
| P91 | 585–760 | 415–585 | ≥ 20 | ≥ 35 | ≤ 250 |
Heat Treatment Requirements
| Grade | Treatment Type | Normalizing Temp (°F) | Tempering Temp (°F) |
| P5 | Normalize & Temper / Full Anneal | – | 1250 [675] |
| P5c | Subcritical Anneal | – | 1325–1375 [715–745] |
| P9 | Normalize & Temper / Full Anneal | – | 1250 [675] |
| P11 | Normalize & Temper / Full Anneal | – | 1200 [650] |
| P22 | Normalize & Temper / Full Anneal | – | 1250 [675] |
| P91 | Normalize & Temper / Quench and Temper | 1900–1975 [1040–1080] | 1350–1470 [730–800] |
Why Choose Mcneil Instruments?
- ISO Certified manufacturer
- Global supply chain and prompt delivery
- Advanced quality testing procedures
- Customized stock & cutting services
- Competitive pricing for bulk orders
Call to Action
Looking for a reliable P5 Alloy Steel Pipe Supplier, P11 Chrome Moly Pipe Exporter, or P91 Pipe Manufacturer in India? Contact Mcneil Instruments today for best-in-class pricing, immediate stock availability, and global shipping.
Comparative Chemical Composition of ASTM A335 Alloy Steel Pipe Grades (P5, P9, P11, P22)
| Element | P5 (%) | P9 (%) | P11 (%) | P22 (%) |
| C | 0.05–0.15 | 0.05–0.15 | 0.05–0.15 | 0.05–0.15 |
| Cr | 4.00–6.00 | 8.00–10.00 | 1.00–1.50 | 1.90–2.60 |
| Mn | 0.30–0.60 | 0.30–0.60 | 0.30–0.60 | 0.30–0.60 |
| Mo | 0.45–0.65 | 0.90–1.10 | 0.44–0.65 | 0.87–1.13 |
| P | 0.025 max | 0.025 max | 0.025 max | 0.025 max |
| S | 0.025 max | 0.025 max | 0.025 max | 0.025 max |
| Si | 0.50–1.00 | 0.25–1.00 | 0.50 max | 0.50 max |
Who is the top manufacturer and supplier of ASTM A335 P-grade alloy steel pipes?
Mcneil Instruments is a trusted manufacturer, supplier, and exporter of ASTM A335 P5, P9, P11, P22, and P91 pipes, known for quality and global delivery.
What industries use ASTM A335 P-grade pipes?
Power generation, petrochemicals, oil & gas, and boiler manufacturing.
Do you offer third-party inspection and testing certificates?
Absolutely. We provide test reports and third-party inspection approvals.
Are these pipes suitable for high-pressure and high-temperature conditions?
Yes. Their chrome-moly composition makes them ideal for elevated conditions.
Can Mcneil Instruments export to the Middle East and Europe?
Yes, we export globally with a presence in over 30+ countries.