Alloy Steel Pipes
An Alloy Steel Pipe is manufactured with alloying elements such as Chromium, Molybdenum, Nickel, and Vanadium that significantly enhance strength, heat resistance, and corrosion resistance. These pipes are widely used in boilers, power plants, refineries, petrochemical plants, steam lines and high-pressure industrial systems. Alloy Steel Seamless Pipes are preferred where high thermal stability, exceptional mechanical strength, and long service life are essential. Their ability to withstand extreme temperatures and pressures makes them the first choice for critical engineering and industrial applications.
About Our Alloy Steel Pipes
We supply premium-quality Alloy Steel Pipes sourced from reputed manufacturers compliant with ASTM A335 (P5, P9, P11, P22, P91), ASTM A213, ASTM A209 and other global standards. As trusted stockists and traders, we ensure accurate chemical composition, precise dimensions, and superior mechanical performance for high-temperature and high-pressure industrial applications.
Key Features
- •High-temperature and high-pressure resistance
- •Superior tensile strength and creep resistance
- •Excellent performance in boilers and power plants
- •Smooth internal finish for efficient steam and fluid flow
- •Ideal for refinery, petrochemical, and furnace applications
- •Long service life and exceptional thermal stability
Applications
- •Boilers, superheaters & reheaters
- •Power plants & thermal power stations
- •Refinery & petrochemical pipelines
- •Steam generation & high-pressure steam lines
- •Heat exchangers & pressure vessels
- •Oil & gas industries
Size & Thickness Range
| diameter | thickness | use |
|---|---|---|
| 1/2" – 2" | SCH 40 / SCH 80 | Superheater tubes, boiler tubes |
| 2" – 8" | SCH 40 / SCH 80 / SCH 160 | Power plant steam lines, refinery pipelines |
| 8" – 24" | SCH 40 / XS / XXS | High-pressure, high-temperature industrial lines |
Manufacturing Process
As leading suppliers and stockists of Alloy Steel Pipes, we provide high-performance solutions for the most extreme conditions. Alloy Steel Seamless Pipes are produced from solid billets containing chromium, molybdenum, and other alloying elements. These billets are heated and pierced using a mandrel to create a uniform hollow structure with no weld seam. The pipes are then hot-finished or cold-drawn to achieve precise dimensions and mechanical strength. Depending on grade requirements (P11, P22, P91), pipes undergo heat treatments such as normalizing, tempering, annealing, or quenching to achieve superior high-temperature resistance. Each pipe undergoes strict Non-Destructive Testing (NDT), including ultrasonic testing, hydrostatic testing, and chemical analysis. All Alloy Steel Pipes are certified to major international standards, including ASTM A335 and ASTM A213, ensuring reliable performance in power plants, refineries, and high-pressure steam systems.
Alloy Steel Pipe vs MS ERW Pipe
| Aspect | Alloy Steel Pipe | MS ERW Pipe |
|---|---|---|
| Composition | Chromium-Molybdenum Alloy Steel | Low Carbon Steel |
| Temperature Resistance | Very High (up to 600°C+) | Low–Moderate |
| Pressure Handling | Excellent | Moderate |
| Lifespan | 20–40 Years | 5–15 Years |
| Best Use | Boilers, steam lines, refineries, power plants | General fabrication & structural work |
Quality Tests Performed
- Chemical Composition Test (Cr, Mo, Ni, V analysis)
- Ultrasonic Testing (UT)
- Hydrostatic Pressure Test
- Mechanical Testing (Tensile, Yield, Hardness)
- Eddy Current Test
- Grain Structure & Microstructure Analysis
- Dimensional Accuracy Test
- Visual Surface Inspection
- Non-Destructive Testing (NDT)
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