Products Description
Our Advantages
1. Ultra-High Cleanliness
- Our electropolished tubing is manufactured using a precision cold drawing process, resulting in a smooth surface. Through bright annealing and advanced electropolishing processes, the surface roughness is controlled to Ra ≤ 0.25 μm, and for high-purity systems, a surface roughness of Ra ≤ 0.15 μm is available.
- The tubing is sealed with polyethylene or PTFE end caps and individually plastic-wrapped, with vacuum sealing available if necessary, ensuring high cleanliness during transportation and storage.
2. Corrosion Resistance
- Our tubing is made from high-quality stainless steel, resistant to battery electrolytes, organic solvents, and chloride-containing environments.
- The materials used undergo rigorous chemical composition testing to ensure compliance with JIS G3459 standards. The tubing also undergoes intergranular corrosion testing to ensure its durability.
3. Compliance
- Our products comply with SEMI F19-0304, ASME BPE-2012, ASTM B912-02, and other standards.
- Material, performance, and cleanliness test reports from international third-party authoritative testing agencies such as SGS, BV, and TUV are available.
4. Customization Capabilities
- We support customization of ultra-thin walls (0.3mm), special wall thicknesses, non-standard outer diameters, and integrated processing of various connection types such as compression fittings, welded fittings, and quick-connect fittings.
- We can customize multi-specification mixed packaging, exclusive labeling, and vacuum packaging according to customer needs.
5. High Dimensional Accuracy
- Our electropolished tubing undergoes cold drawing and straightening treatment, resulting in a straightness of ≤0.1mm/m, outer diameter tolerance of ±0.02mm, and wall thickness tolerance of ±0.01mm, requiring no secondary processing.
- The tubing undergoes rigorous dimensional inspection to ensure compliance with JIS G3459/ASTM A213 and other standards, and can be directly used in mainstream lithium-ion battery production equipment without secondary processing.
application areas
- Electrolyte preparation and delivery system
- Cathode and anode material processing
- High-purity gas delivery system
- Battery assembly and formation production line
- Energy storage system (ESS) production equipment
Chemical Composition
| Element | C (%) | Si (%) | Mn (%) | P (%) | S (%) | Cr (%) | Ni (%) | Mo (%) |
|---|---|---|---|---|---|---|---|---|
| 304 / 304L | ≤0.08 / ≤0.03 | ≤1.00 | ≤2.00 | ≤0.045 | ≤0.030 | 18.0–20.0 | 8.0–10.5 | - |
| 316 / 316L | ≤0.08 / ≤0.03 | ≤1.00 | ≤2.00 | ≤0.045 | ≤0.030 | 16.0–18.0 | 10.0–14.0 | 2.0–3.0 |
Mechanical Properties
| Property | Tensile Strength (MPa) | Yield Strength 0.2% (MPa) | Elongation (%) | Hardness (HB) |
| 304 / 304L | ≥515 | ≥205 | ≥40 | ≤90 HRB |
| 316 / 316L | ≥515 | ≥205 | ≥40 | ≤90 HRB |
Possible Alternative Grades
| Alternative Grades | Reasons |
| 321 | It possesses resistance to intergranular corrosion and is suitable for lithium-ion battery equipment operating at moderately high temperatures. |
| 347/347H | It is suitable for continuous high-temperature battery processing systems and welded pipelines requiring extremely high long-term structural integrity. |
| 310S | It exhibits excellent oxidation resistance and thermal stability, making it suitable for high-temperature lithium-ion battery drying, sintering, or heat treatment systems. |
Products Show
Testing Equipment
Factory Equipment
Pickling equipment
Products Package
FAQ
Q: What surface roughness (Ra) can be achieved with battery-grade EP tubing?
A: The EP tubing we typically supply includes:
For standard lithium-ion battery applications, Ra ≤ 0.25 μm
For high-purity or critical process lines, Ra ≤ 0.15 μm
Q: Which grades of stainless steel are recommended for lithium-ion battery manufacturing?
A: The most commonly used grades are 304L and 316L. Low-sulfur, high-purity 316L stainless steel is recommended for international battery OEMs.
Q: Is your tubing suitable for orbital welding in battery production lines?
A: Yes. Our EP tubing features tight dimensional tolerances, excellent roundness, and a clean inner surface, making it ideal for orbital welding.
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