Alloy Steel Pipes are high-strength pipes designed for high-temperature, high-pressure, and corrosive service conditions. These pipes are alloyed with elements such as chromium, molybdenum, and manganese to enhance mechanical strength, oxidation resistance, and creep resistance.
Alloy Steel Pipes are widely used in power plants, refineries, petrochemical units, and industrial piping systems where superior performance and long service life are critical.
Alloy Steel Pipe Manufacturer in India | ASTM A335 P1, P5, P9, P11, P22 & P91 Pipe Supplier
Applications of Alloy Steel Pipes
| ● Power Generation & Thermal Power Plants |
| ● Oil & Gas Refineries |
| ● Petrochemical & Chemical Processing Plants |
| ● Boilers, Superheaters & Heat Exchangers |
| ● High-Pressure & High-Temperature Piping Systems |
| ● Fertilizer & Process Industries |
Specification Table of Alloy Steel Pipes
| Standard | ASTM A335, ASTM A213, ASME SA335 |
|---|---|
| Grades | P1, P5, P9, P11, P12, P22, P91 |
| Size | 1/8″ NB to 24″ NB (Custom sizes available) |
| Schedule | SCH 10, 20, 40, 80, 160, XXS |
| Type | Seamless / Welded |
| Surface Finish | Annealed, Pickled, Black, Polished |
Alloy Steel Pipe Grades (Sub-Products)
| ● Alloy Steel P1 Pipe – Low alloy grade for moderate temperature service |
| ● Alloy Steel P5 Pipe – Chromium-molybdenum steel for high-temperature resistance |
| ● Alloy Steel P9 Pipe – Enhanced strength and oxidation resistance |
| ● ASTM A335 P11 Pipe – Widely used in boilers and heat exchangers |
| ● Alloy Steel P12 Pipe – Improved creep resistance at elevated temperatures |
| ● Alloy Steel P22 Pipe – Excellent corrosion and heat resistance |
| ● Alloy Steel P91 Pipe – High-strength creep-resistant alloy for power plants |
Mechanical Properties (Typical)
| Grade | Yield Strength (MPa) | Tensile Strength (MPa) | Elongation % |
|---|---|---|---|
| ASTM A335 P11 | 205 | 415 | 20 |
| ASTM A335 P22 | 205 | 415 | 20 |
| ASTM A335 P91 | 415 | 585 | 20 |