Products Description
Our Advantages
1. High Temperature Resistance
- Our P22 Chrome Pipe maintains structural integrity at temperatures up to 1112°F, making it suitable for use in boilers, superheaters, and heat exchangers.
- The pipes undergo tensile testing at room and high temperatures to ensure compliance with ASTM A335 / ASME SA335 standards.
2. High Pressure Resistance
- P22 Chrome Pipe is a seamless pipe manufactured using hot extrusion and cold drawing processes, capable of withstanding high pressure.
- The pipes undergo hydrostatic testing, ultrasonic testing, and eddy current testing to ensure that there is no leakage risk on the pipe surface and to verify their ability to withstand pressures according to ASTM A335 standards.
3. Corrosion Resistance
- Our pipes are made of P22 material, offering resistance to hydrogen and sulfide corrosion, suitable for hydrogen-containing systems with hydrogen partial pressure ≤10MPa and temperature ≤580℃, and for oil and gas pipelines in petroleum refining.
- The pipes are supplied in a normalized + high-temperature tempered state and undergo metallographic testing to ensure that the heat treatment prevents carbide precipitation and improves the corrosion resistance of the pipes.
4. Excellent Weldability
- P22 seamless pipes are medium-weldable alloy steel pipes. We use preheating to suppress cold cracking in P22 steel, and post-weld heat treatment is required to eliminate residual stress.
- Welding test reports are available to ensure that the strength of the welded joint is equal to or better than the base material, supporting various welding processes such as TIG, MIG, and SAW.
5. Customized Services
TORICH offers flexible customization of dimensions and surface treatments; provides various manufacturing methods such as hot rolling and cold rolling; and can customize anti-corrosion packaging based on transportation distance and storage environment.
TORICH has a dedicated technical team that can provide a full range of solutions, from size specifications, material optimization, and process customization to supporting services, based on customers' diverse operating conditions such as high temperature, high pressure, corrosion, and special installation requirements.
application areas
- Power generation industry: Used in superheater and reheater steam pipes, boiler piping systems, etc.
- Petrochemical and refining applications: High-temperature process piping, steam and chemical transfer lines, etc.
- Oil and gas industry: Used for the transportation of superheated fluids and steam, high-pressure and high-temperature pipelines, etc.
- Metallurgical industry: Blast furnace hot blast stoves, rolling mill heating furnaces, heat treatment equipment piping.
Chemical Composition
| Element | C (%) | Si (%) | Mn (%) | P (%) | S (%) | Cr (%) | Mo (%) | Ni (%) |
|---|---|---|---|---|---|---|---|---|
| P22 | 0.08 | 0.30 | 0.40 | 0.025 | 0.025 | 1.00 | 0.50 | 0.40 |
Mechanical Properties
| Property | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | Hardness (HB) | mpact (Charpy V, J) |
| Value | 415 – 550 | 205 – 310 | ≥ 20 | 120 – 190 | ≥ 27 (–29°C) |
Possible Alternative Grades
| Alternative Grades | Reasons |
| P11(1Cr-0.5Mo) | The strength is slightly lower, but it is suitable for moderate temperatures. |
| P91 (9Cr-1Mo-V) | High-strength and creep-resistant properties are better for ultra-supercritical boilers. |
| T11/T22 | It is equivalent to P11/P22 in international standards, providing flexibility for global procurement. |
Products Show
Testing Equipment
Factory Equipment
Pickling equipment
Products Package
FAQ
Q: What are the safe temperature and pressure limits for P22 chrome pipes?
A: Depending on the pipe diameter and wall thickness, P22 pipes can be used in working temperatures up to 540–600°C and high internal pressure environments.
Q: Why should we choose P22 instead of carbon steel or other alloy steels?
A: Compared to carbon steel and high-alloy steels like P91, P22 steel offers higher strength, better oxidation resistance, and superior high-temperature performance. Furthermore, P22 steel is less expensive than high-alloy steels like P91, has better weldability, and offers reliable performance.
Q: What tests and certifications do you provide for P22 chrome pipes?
A: For each batch, we provide EN 10204 3.1 / 3.2 factory test certificates, chemical composition analysis, mechanical property testing, and hydrostatic testing.
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