Surface Electropolished
Electropolished Stainless Steel Finish
Electropolishing is a controlled electrochemical removal process used to smooth microscopic peaks, improve cleanability and create a bright stainless surface.
Appearance
- Bright, clean and directionless at normal viewing distance; final gloss and smoothness depend on the incoming surface and removal depth.
Production route
- Mechanical prefinish where required
- Degreasing and masking
- Controlled electrochemical polishing
- Rinsing, neutralization and final cleaning
Typical uses
- Pharmaceutical and biotechnology systems
- Sanitary tube and fittings
- High-purity equipment
- Cleanable food-contact components
Purchase-order checks
- Starting surface and weld quality
- Material removal allowance
- Final Ra and measurement method
- Internal geometry access
- Cleaning and protected packing
Protection and acceptance
- Specify incoming and final maximum Ra where functional
- Define internal coverage, masking and weld treatment
- Agree cleanliness, visual, roughness and passivation records
Common defects to control
- Uneven removal or gloss
- Pits revealed from base-metal inclusions
- Poor coverage at shielded geometry
Example purchase description
- 316L sanitary tube assembly, mechanically prefinished and electropolished internally to the project maximum Ra, cleaned, capped and documented after final inspection.
Technical content updated: 2026-07-29
Organizational author: Tsingshan (Shandong) Iron & Steel Co., Ltd..Review method, status and limitations.
Related products and technical data
Applicable product forms
Common grade datasheets
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