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Electropolished (EP) Seamless Tube

Short Description:

Electropolished Stainless Steel Tubing is used for biotechnology, semiconductor and in pharmaceutical applications. We have our own polishing equipment and produce electrolytic polishing tubes that meet the requirements of various fields under the guidance of the Korean technical team.


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What is Electropolishing?

Electropolishing is an electrochemical finishing process that removes a thin layer of material from a metal part, typically stainless steel or similar alloys. The process leaves a shiny, smooth, ultra-clean surface finish.

Also known as electrochemical polishing, anodic polishing or electrolytic polishing, electropolishing is especially useful for polishing and deburring parts that are fragile or have complex geometries. Electropolishing improves surface finish by reducing surface roughness by up to 50%.

Electropolishing can be thought of as reverse electroplating. Instead of adding a thin coating of positively-charged metal ions, electropolishing uses electric current to dissolve a thin layer of metal ions into an electrolyte solution.

Electropolishing of stainless steel is the most common use of electropolishing. Electropolished stainless steel has a smooth, shiny, ultra-clean finish that resists corrosion. Although nearly any metal will work, the most commonly electropolished metals are 300- and 400-series stainless steel.

The finishing of electroplating has different standards for use in different applications. These applications require medium range of finish. Electropolishing is a process through with the absolute roughness of the Electropolished Stainless Steel Pipe is reduced. This makes the pipes more accurate in dimensions and the Ep Pipe can be installed with accuracy in sensitive systems like the pharmaceutical industrial applications.

We have our own polishing equipment and produce electrolytic polishing tubes that meet the requirements of various fields under the guidance of the Korean technical team.

Our EP Tube in  ISO14644-1  Class 5clean room conditions, each tube is purged with ultra high purity (UHP) nitrogen and then capped and double bagged. Certification qualifying the tubing’s production standards, chemical composition, material traceability, and maximum surface roughness is provided for all material.

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Specification

ASTM A213 / ASTM A269

Clean Room Standards: ISO14644-1  Class 5

Roughness & Hardness

Production Standard  Internal Roughness  External Roughness  Hardness max 
HRB
ASTM A269  Ra ≤ 0.25μm  Ra ≤ 0.50μm  90

Relative Elemental Composition of Tube

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pdf

Report 16939(1)

Process

Cold rolling / Cold drawing/ Annealing/Electropolished

Material Grade

 TP316/316L

Packing

Each single tube has been purged by N2 gas, capped on both ends, packed in clean double-layer of bags and final into wooden case.  

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EP Tube Clean Room

Clean Room Standards: ISO14644-1  Class 5

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Application

Semi-conductor/ Displays/ Food · pharmaceutical · bio production equipment/ Ultra pure clean pipeline/ Solar energy manufacturing equipment/ Shipbuilding engine pipeline / Aerospace engine / Hydraulic and mechanical systems/ Clean gas transportation

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Certificate Of Honor

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ISO9001/2015 Standard

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ISO 45001/2018 Standard

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PED Certificate

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TUV Hydrogen compatibility test certificate


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  • No. 

    Size

    O.D(mm)

    Thk(mm)

    1/4″

    6.35

    0.89

    3/8″

    9.53

    0.89

    1/2″

    12.70

    1.24

    3/4″

    19.05

    1.65

    3/4″

    19.05

    2.11

    1″

    25.40

    1.65

    1″

    25.40

    2.11

    1-1/4″

    31.75

    1.65

    1-1/2″

    38.10

    1.65

    2″

    50.80

    1.65

    10A

    17.30

    1.20

    15A

    21.70

    1.65

    20A

    27.20

    1.65

    25A

    34.00

    1.65

    32A

    42.70

    1.65

    40A

    48.60

    1.65 

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