Electropolished Tube
Electropolished tube is a seamless stainless steel tube processed by electrolytic polishing, which removes surface micro-defects and forms a smooth, passive, corrosion-resistant surface with low roughness (Ra). It is ideal for pharmaceutical, semiconductor, food & beverage and other industries requiring ultra-clean and easy-to-clean surfaces.
Electropolished Tube (EP)
Electrolytically polished stainless steel tube for biopharmaceutical and high-purity applications.
Product Overview
Electropolished (EP) tube starts from BA-grade tube and is further electrolytically polished, which removes the surface micro-peaks and improves the inner roughness to about half of the BA value. The result is an extremely smooth, chemically clean surface that minimizes particle retention and bacterial growth.
EP tube is the standard choice for biopharmaceutical water systems, cleanrooms, high-purity gas distribution and photovoltaic manufacturing.
Product Gallery
Key Features
- Inner roughness improved to approx. half of BA value
- Ultra-smooth, chemically clean inner surface
- Nitrogen-filled double-bag packaging for purity retention
- Meets strict cleanroom and biopharmaceutical requirements
- Precise OD/wall tolerance, bright electrolytic finish
- Mill certificates and NDT reports supplied
Technical Specifications
| Material | 304, 316, Monel400, 904L, Incoloy825/800, Inconel600/625, HC276 |
| OD Range | From 6 mm and up |
| Wall Thickness | 0.5 mm – 3 mm |
| Surface | Electrolytic chemical polishing on BA base — roughness improved by half |
| Tolerance | Precise tolerance, bright and clean electrolytic surface |
| Applications | Bio-pharmaceutical, cleanroom, high-purity gas, clean laboratory, LCD, solar PV, polysilicon |
| NDT | Eddy current / hydraulic / ultrasonic testing |
| Packaging | Nitrogen-filled, single tube double bag, end caps, anti-vibration and dust-proof |
Imperial EP Tube Selection (inch)
| OD (inch) | Wall (inch) | Ordering Code |
|---|---|---|
| 1/8 | 0.028 | SMT 1/8X0.028-316L-EP |
| 1/4 | 0.035 | SMT 1/4X0.035-316L-EP |
| 1/4 | 0.049 | SMT 1/4X0.049-316L-EP |
| 3/8 | 0.049 | SMT 3/8X0.049-316L-EP |
| 1/2 | 0.049 | SMT 1/2X0.049-316L-EP |
| 3/4 | 0.065 | SMT 3/4X0.065-316L-EP |
| 1 | 0.083 | SMT 1X0.083-316L-EP |
Metric EP Tube Selection (mm)
| OD (mm) | Wall (mm) | Ordering Code |
|---|---|---|
| 6 | 0.5–1.0 | SMT 6X1-316L-EP |
| 8 | 0.5–1.0 | SMT 8X1-316L-EP |
| 10 | 0.5–1.0 | SMT 10X1-316L-EP |
| 12 | 0.5–1.0 | SMT 12X1-316L-EP |
| 16 | 1.0–2.0 | SMT 16X2-316L-EP |
| 18 | 1.0–2.0 | SMT 18X2-316L-EP |
| 25 | 1.0–3.0 | SMT 25X3-316L-EP |
Need a Custom Specification or a Quote?
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