High/Ultra-High Cleanliness BA/EP Stainless Steel Tube
- Grade: TP304/304L, TP316/316L, TP317, TP321, TP347, TP348, S31254, S30600, S32654, N08904
- Tube OD: 4-127mm
- Tube WT: 0.4-12.7mm
- Length: 1000-12000mm
- Type: Seamless & Welded
- Delivery Condition/Surface Finish: BA (Bright Annealed), EP (Electrochemically Polished)
Features
High/Ultra-High Cleanliness BA/EP Stainless Steel Tube
Chemical Composition (wt.%) of BA/EP Stainless Steel Tube
| Grade | UNS | C, max (%) | Mn, max (%) | Si, max (%) | P, max (%) | S, max (%) | Cr (%) | Ni (%) | Mo (%) | N (%) |
| TP304 | S30400 | 0.08 | 2 | 0.75 | 0.045 | 0.03 | 18.0-20.0 | 8.0-11.0 | – | – |
| TP304L | S30403 | 0.03 | 2 | 0.75 | 0.045 | 0.03 | 18.0-20.0 | 8.0-12.0 | – | – |
| TP316 | S31600 | 0.08 | 2 | 0.75 | 0.045 | 0.03 | 16.0-18.0 | 10.0-14.0 | 2.0-3.0 | – |
| TP316L | S31603 | 0.03 | 2 | 0.75 | 0.045 | 0.03 | 16.0-18.0 | 10.0-14.0 | 2.0-3.0 | – |
| N08904 | N08904 | 0.02 | 2 | 1 | 0.045 | 0.035 | 19.0-23.0 | 23.0-28.0 | 4.5-5.5 | 0.10-0.15 |
Mechanical Properties of BA/EP Stainless Steel Tube
| Grade | UNS | Yield Strength, min (MPa) | Tensile Strength, min (MPa) | Elongation, min (%) |
| TP304 | S30400 | 205 | 515 | 40 |
| TP304L | S30403 | 170 | 485 | 40 |
| TP316 | S31600 | 205 | 515 | 40 |
| TP316L | S31603 | 170 | 485 | 40 |
| N08904 | N08904 | 220 | 490 | 35 |
Technical Specifications
| Specification | Value |
| Product Name | High/Ultra-High Cleanliness BA/EP Stainless Steel Tube |
| Standard | ASTM A213, ASTM A249, ASTM A268, ASTM A269, ASTM A312, EN 10216-5, EN 10217-7 |
| Grade | TP304/304L, TP316/316L, TP317, TP321, TP347, TP348, S31254, S30600, S32654, N08904 |
| Manufacturing Process | Hot Finished, Cold Finished, Welded |
| Seam Type | Seamless, Welded |
| Dimension | Tube OD: 4-127mm Tube WT: 0.4-12.7mm |
| Length | 1000-12000mm |
| Delivery Condition | Bright Annealed: The annealed and pickled tube is mechanically polished to reduce the roughness of the tube wall surface and achieve a smooth and clean effect. Inner/Outer Wall Roughness: Ra≤1.0μm
Electrochemically Polished: The tube is electrochemically polished to achieve a high or ultra-high brightness, smoothness, and cleanliness of the tube wall, which can improve surface corrosion resistance. Roughness: Innter Wall Ra≤0.25μm |
| Inspection Certificate | EN 10204 Type 3.1 (Mill Test Certificate), EN 10204 Type 3.2 (Witness Testing or 3rd Party Inspection) |
| Test | Chemical analysis, Tension tests, Flaring tests, Hydrostatic tests, Air underwater pressure tests, Nondestructive electric tests |
Packing of BA/EP Stainless Steel Tube
The tubes are neatly arranged or bundled, lined with PVC bags (EP tubes need to be packaged in nitrogen-filled plastic bags), and placed inside the wooden crate.
Applications of BA/EP Stainless Steel Tube
BA Tubes:
Biopharmaceuticals: Used in sterile environments to transport fluids and gases, ensuring high purity levels and preventing contamination.
Electronic Clean Room Factory: This is essential for piping in clean rooms where air quality and contamination control are crucial, ensuring minimal particle generation.
High Purity Gases: Used for transporting ultra-high purity gases, ensuring no contamination from the pipe material, which is critical in industries like semiconductors and pharmaceuticals.
High Requirements for Clean Labs: Utilized in laboratory settings that require a high degree of cleanliness for experiments or manufacturing processes, ensuring no contamination from the piping system.
LCD, Solar Photovoltaic, and Polysilicon Industries: In these industries, BA stainless steel tubes are used in the production process to maintain ultra-clean conditions, preventing impurities from affecting product quality.
Semiconductor Industry: This company is employed in gas delivery systems, where ultra-pure gases are required for semiconductor fabrication to avoid contamination and defects in the chips.
Pharmaceutical Industry: Widely used in drug production and transport of Water for Injection (WFI) systems due to their hygienic properties and ability to maintain purity standards.
Instrumentation Systems: Used in precise control systems where contamination could affect the measurement accuracy of instruments, ensuring reliability in clean environments.
Compressed Air Systems: Employed in environments where clean, particle-free air is essential, such as clean rooms and high-purity manufacturing facilities.
Ultra-High Purity Gas Piping Systems: Ideal for transporting gases like nitrogen, oxygen, or hydrogen in environments where purity must be maintained to a high standard.
Chemical Systems: BA stainless steel tubes resist corrosion in chemical processing, especially in clean chemical environments, and maintain high-purity conditions.
Water for Injection (WFI) Systems: These are used in pharmaceutical and biopharmaceutical processes to deliver ultra-pure water that meets the highest standards of cleanliness.
EP Tubes:
Ultra-High Purity Gas Piping Systems: Ideal for transporting gases like nitrogen, oxygen, or hydrogen in environments where purity must be maintained to a high standard.
Semiconductor and Microelectronics: EP tubes are crucial for ultra-high purity applications, minimizing particle shedding and ensuring the highest cleanliness levels when transporting gases and chemicals.
Pharmaceutical and Biotechnology: EP tubes are used in high-purity fluid systems where contamination must be kept at an absolute minimum. The electropolished finish enhances serializability and reduces biofilm formation.
Food and Beverage: EP tubes are used for critical cleaning and sanitary requirements in dairy and brewing equipment.
Medical Devices: EP tubes are often used in surgical instruments and diagnostic equipment due to their extreme cleanliness and biocompatibility.
Vacuum Systems: EP tubes are used in high-vacuum systems where cleanliness and outgassing must be minimized.
