Products Description
Our Advantages
1. High Surface Cleanliness
- Our stainless steel coils undergo bright annealing followed by electrochemical polishing, resulting in a smooth inner surface with an inner wall surface roughness Ra≤0.2μm.
- Electropolished Stainless Steel Pipe undergoes metallographic testing and surface roughness measurement to ensure the surface quality meets customer requirements.
2. High Corrosion Resistance
- The pipes are made of high-quality materials with high molybdenum content, such as 316/316L, exhibiting excellent corrosion resistance. Furthermore, the pipes undergo passivation treatment after electropolishing to further enhance their corrosion resistance.
- Our pipes undergo rigorous chemical composition testing and intergranular corrosion testing to ensure that intergranular corrosion and cracking do not occur during repeated sterilization and cleaning processes.
3. Standards and Certifications
- Electropolished Stainless Steel Pipe is manufactured in accordance with ASTM A270 standards and comply with ISO and ASME BPE standards.
- Our pipes undergo rigorous quality control and can provide EN 10204 3.1 material testing certificates, as well as third-party testing certificates from SGS, TÜV, and other reputable testing institutions.
4. Low Leakage Risk
- Our pipes are manufactured using a cold-drawing process, with coil lengths up to 1000 m. The absence of welded joints significantly reduces the number of welding points, contamination, and the risk of leaks.
- The pipes undergo ultrasonic testing and hydrostatic testing to ensure uniform wall thickness and a defect-free finish, preventing leaks in high-purity systems.
5. Packaging and Customization
- Our pipes are ultrasonically cleaned before packaging and individually packaged to ensure they remain uncontaminated during transport and storage.
- TORICH offers custom sizing and surface finish services, including customizable surface roughness; suitable materials can be selected based on specific applications.
application areas
- Pure Water (PW) System: Used for pharmaceutical-grade pure water distribution loops requiring extremely high corrosion resistance and hygienic surface treatment.
- Water for Injection (WFI) System: Piping for the production, storage, and distribution of water for injection.
- Clean Steam System: Suitable for clean steam generation and delivery lines for equipment and piping sterilization.
- Bioreactor and Fermentation System: Aseptic process piping used to connect bioreactors.
Chemical Composition
| Element | C | Si | Mn | P | S | Cr | Ni | Mo |
|---|---|---|---|---|---|---|---|---|
| 316 | ≤0.08 | ≤1.00 | ≤2.00 | ≤0.045 | ≤0.030 | 16.0–18.0 | 10.0–14.0 | 2.0–3.0 |
| 316L | ≤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) |
| 316 | ≥515 | ≥205 | ≥40 | ≤95 |
| 316L | ≥485 | ≥170 | ≥40 | ≤95 |
Possible Alternative Grades
| Alternative Grades | Reasons |
| 904L | It exhibits excellent resistance to strong acids and highly corrosive cleaning agents. |
| Duplex 2205 | It possesses higher mechanical strength and excellent resistance to stress corrosion cracking, making it suitable for high-pressure systems. |
| 254 SMO | It exhibits superior corrosion resistance, making it suitable for highly corrosive chloride environments. |
Products Show
Testing Equipment
Factory Equipment
Pickling equipment
Products Package
FAQ
Q: What is the internal surface roughness after electropolishing?
A: The standard internal surface roughness is Ra ≤ 0.38 μm (15 μin). For high-purity systems, we can provide a Ra ≤ 0.25 μm (10 μin) accuracy. A profilometer measurement report is provided for each batch.
Q: How is it packaged to maintain cleanliness?
A: The tubing is ultrasonically cleaned, capped at both ends, and packed in double-layered PE bags. For international shipping, protective coiled packaging, wooden or steel spool packaging is available, with optional nitrogen purging to maintain internal cleanliness.
Q: What standards does your 316/316L electropolished coil meet?
A: Our tubing is manufactured according to ASTM A269/A270 and ASME BPE standards, with ISO certification optional. Each roll comes with complete traceable documentation, including an EN 10204 3.1/3.2 certificate.
Hot Tags: electropolished stainless steel pipe, China, suppliers, manufacturers, factory, customized, wholesale, price, OEM, mill, producer, for sale
