Product Overview – ASTM A335 P22 Seamless Pipes
ASTM A335 P22 seamless pipes are alloy steel pipes specifically engineered for elevated temperature service and critical industrial applications.This grade contains higher chromium and molybdenum content compared to P11 and P12, providing improved oxidation resistance, corrosion resistance, and creep strength
P22 is widely recognized for its ability to perform under continuous high temperature exposure and high pressure conditions, making it a preferred choice for demanding industrial systems.
These pipes are manufactured through seamless processes, ensuring uniform wall thickness, superior strength, and excellent pressure handling capability Post-manufacturing treatments such as normalizing and tempering enhance mechanical properties and ensure long-term reliability.
Due to its proven performance, ASTM A335 P22 is extensively used in boilers, superheaters, reheaters, heat exchangers, and high-pressure pipelines.
Standard & International Identification - ASTM A335 P22 Seamless Pipes
Technical Specifications – ASTM A335 P22 Pipes
| Pipe Type: | Seamless Alloy Steel Pipes |
| Manufacturing Process: | Hot Rolling → Heat Treatment (Normalizing & Tempering) → Inspection |
| Outer Diameter: | 6 mm to 610 mm |
| Wall Thickness: | 0.5 mm to 65 mm |
| Length Options: | Single Random Length/ Double Random Length/ Custom Cut Length |
| Surface Finish: | Black Finish / Pickled Surface / Shot Blasted |
| Testing & Inspection: | Hydrostatic Test,Ultrasonic Testing, Radiographic Testing,Hardness Testing |
| Certification : | EN 10204 3.1 / 3.2 MTC |
Third Party Inspection Available
All specifications are in accordance of ASTM A335 / ASME SA335 standards. Mechanical and chemical values are as per standard limits. Mill Test Certificates (MTC) available upon request.
Chemical Composition – ASTM A335 P22
(As per ASTM specification)
| Element | Max (%) |
|---|---|
| Carbon (C): | 0.05 – 0.15% |
| Manganese (Mn): | 0.30 – 0.60% |
| Silicon (Si): | 0.50% |
| Chromium (Cr): | 1.90 – 2.60% |
| Molybdenum (Mo): | 0.87 – 1.13% |
| Phosphorus (P): | Max 0.025% |
| Sulfur (S): | Max 0.025% | Iron : | Balance |
Note: This composition provides excellent high-temperature strength and resistance to oxidation.
Mechanical Properties – ASTM A335 P22 Pipes
| Property | Minimum Value |
|---|---|
| Tensile Strength | 415 MPa |
| Yield Strength | 220 MPa |
| Elongation | 30% |
These properties ensure durability under extreme operating conditions.
High Temperature Performance & Strength
ASTM A335 P22 pipes are specifically designed for high temperature and pressure systems.
Key performance benefits include:
Because of these advantages, P22 pipes are widely used in power generation and refinery operations.
Major Industrial Applications of ASTM A335 P22 seamless pipes
- ASTM A335 P22 seamless pipes are commonly used in:
- 🔸Thermal Power Plants
- 🔸Superheaters and Reheaters
- 🔸Oil Refineries
- 🔸Petrochemical Plants
- 🔸Heat Exchanger Systems
- 🔸High Pressure Steam Lines
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