Products Description
Our Advantages
1. Strong Corrosion Resistance
Our 904L Stainless Steel Pipe boasts excellent resistance to strong acids, resisting corrosion from sulfuric acid, phosphoric acid, and acetic acid. Furthermore, our pipes undergo intergranular corrosion testing, demonstrating superior corrosion resistance. It serves as an economical alternative to Alloy 825 or Alloy 625, particularly in heat exchanger tubes, chemical processing, and seawater equipment.
2. Long Service Life
Our 904L Stainless Steel Pipe undergoes eddy current testing and hydrostatic testing to ensure pipe quality. It performs well in continuously acidic, high-humidity, and oxidizing/reducing environments, reducing maintenance costs and extending equipment life.
3. Excellent Weldability
We use high-quality 904L stainless steel, chemically verified to have a carbon content ≤0.02%, preventing risks such as carbide precipitation, sensitization, and intergranular corrosion in weld areas. It is suitable for secondary processing such as bending, flanging, and forming.
4. Surface Treatment
Our pipe surfaces undergo pickling, ultrasonic cleaning, and chemical passivation treatments to ensure a contaminant-free surface and enhance corrosion resistance. Polishing can be performed according to customer requirements.
5. High Mechanical Strength
Our tubing undergoes mechanical testing and can withstand enormous internal pressure without deformation. It also maintains impact resistance at both low and high temperatures, making it suitable for chemical, seawater, and high-temperature applications.
application areas
- Chemical and petrochemical industries: chemical reactors, heat exchangers, piping systems, and storage tanks, etc.
- Seawater desalination systems: seawater pipelines, desalination plants, cooling water systems, etc.
- Oil and gas industry: used in offshore platforms, pipelines, and processing equipment.
- Power generation and energy industry: used in boilers, condensers, and heat exchangers requiring extremely high corrosion resistance and mechanical strength.
- High-pressure and high-temperature applications: pressure vessels, critical pipelines, and high-pressure chemical transport.
Chemical Composition
| Element | C | Mn | P | S | Si | Cr | Ni | Mo | Cu | N | Fe |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Content (%) | ≤0.02 | ≤2.00 | ≤0.045 | ≤0.035 | ≤1.00 | 19–23 | 23–28 | 4–5 | 1–2 | ≤0.10 | Balance |
Mechanical Properties
| Property | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | Hardness (HB) | Elastic Modulus (GPa) |
| Value | ≥ 490 | ≥ 220 | ≥ 35% | ≤ 90 | ~195 |
Possible Alternative Grades
| Alternative Grades | Reasons |
| 317L | Good resistance to pitting corrosion, lower cost, but poorer corrosion resistance. |
| 254 SMO | Stronger corrosion resistance; suitable for seawater and chlorides. |
| Alloy 625 | Excellent overall corrosion resistance in extreme environments. |
| Duplex 2205 | Higher strength, better chloride resistance, and high cost-effectiveness. |
Products Show
Testing Equipment
Factory Equipment
Pickling equipment
Products Package
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