What are ASTM A335 P22 Seamless Pipes?
Alloy Steel ASTM A335 P22 Seamless Pipes is a ferritic alloy steel tube used for high temperature applications. It is produced through a seamless process to ensure uniformity and strength. It contains molybdenum and chromium to ensure resistance to oxidation and corrosion in extreme conditions. It is used heavily in power plant uses, petrochemical uses, and oil refinery uses where there is a requirement for durability and pressure resistance.
Advantages of ASTM A335 P22 Seamless Pipes?
- High-Temperature Strength: Chromium and molybdenum content provides strength to the pipe to withstand temperature and pressure.
- Corrosion and Oxidation Resistance: Chromium offers excellent resistance to corrosion and oxidation that extends the life of the pipe.
- Seamless Production: Seamless manufacturing eliminates weak points and offers more strength and durability.
- Low thermal expansion: It is formulated to reduce thermal expansion and is hence best suited for applications that demand dimensional stability.
- Cost-Efficient Choice: Its greater service life and reduced maintenance costs make it a cost-efficient choice for high-performance applications.
Uniform structure eliminates weak spots with smooth build-up for increased reliability.
Uses and Applications ASTM A335 P22 Seamless Pipes?
High Tensile Alloy Steel ASTM A335 P22 Seamless Pipes are used in various applications.
- Power Generation: Applied to boiler tubes for high pressure, heat exchangers, and superheater sections owing to its excellent strength and heat resistance.
- Petrochemical Industry: Ideal for transporting fluids and gases under extreme conditions with a chance of corrosion and heat.
- Oil and Gas Industry: Applied in upstream and downstream processes like steam pipelines and processing units because of its tensile strength.
- Refineries: Used in catalytic reformers and other refinery processes in which exposure to severe heat and corrosive substances is common.
- Aerospace and Defense: Applied in mission-critical uses with great strength and resistance to various pressure levels.
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What Are Specification ASTM A335 P22 Seamless Pipes?
| Size in Inch | 1/8NB TO 24NB inch |
|---|---|
| ASTM Standards | ASTM A 335, and ASME SA 335 |
| Type | Seamless Pipe |
| Specialized in Size | Large Diameter Size |
| Outer Dimensions Chart | 19.05milimeter – 114.3milimeter |
| Wall Thickness Chart | 2.0milimeter – 14 milimeter |
| Length in milimeter | max 16000milimeter |
| Schedule Chart | Schedule 20 - XXS up to 250 milimeter thk. |
| Pipe Form | Round, Rectangular, Square, Hydraulic Etc. |
| Length | Single, Double Random & Cut to Length. |
| Pipe & Tube End | Plain, Beveled, Treaded. |
Equivalent material Of ASTM A335 P22 Seamless Pipes?
| ASTM Number | ASME Number | Equivalent Grade | JIS G 3458 Chart | UNS Number | BS Number | DIN Number | ISO Number | ABS Number | NK Numbero | LRS Number |
|---|---|---|---|---|---|---|---|---|---|---|
| A335 P22 | SA335 P22 | T22 | STPA 23 | K22597 | 3604 P1 621 | - | - | ABS 22 | KSTPA 23 | - |
| ASTM Standard | British Standards institute(BSI) | Alloy P12 Steel Material |
|---|---|---|
| A335 Gr. P22 | 3604/621 | 1 1/4% Cr 1/2% Mo |
Chemical Composition Of ASTM A335 P22 Seamless Pipes?
| Grade | UNS | C≤ | Mn | P≤ | S≤ | Si≤ | Cr | Mo |
|---|---|---|---|---|---|---|---|---|
| P22 | K21590 | 0.05~0.15 | 0.30~0.60 | 0.025 | 0.025 | 0.50 | 1.90~2.60 | 0.87~1.13 |
Mechanical Properties Of ASTM A335 P22 Seamless Pipes?
| Tensile Strength, MPa | Yield Strength, MPa | Elongation, % |
|---|---|---|
| 415 min | 205 min | 30 min |