How To Polish Stainless Steel Pipe? | PURUI Polishing Products

08 Apr

How to Polish Stainless Steel Pipe?

Stainless steel pipes are widely used by various industries. Stainless steel pipe in many uses such as electrical housing, sanitary fittings and medical generally needs to be made mirror finish, in addition to beautiful decoration, but also to improve the surface oxidation resistance, rust resistance, and durability etc. The mirror finish can clearly reflect the scene, but mirror finish needs to be achieved step by step.

As follows is a step by step guide of how to polish stainless steel pipe:

Step 1:

Clear your stainless steel pipe first, wash it with warm water, dish soap, a brush or a clean sponge. Rinse the soap off with fresh water and dry it with a clean towel.

Step 2:

Now you can go to grinding stage. Start with a grit 80# or a grit 120# abrasive sand belt or abrasive flap wheel, grind and sand the item, repeat grinding and sanding, the purpose is to initially remove visible local dents, deep scratches and welding joint. Change grit 80# or grit 120# sand belt or abrasive flap wheel to a girt 180# one, continue grinding the stainless steel pipe, sand off the lines from the previous grinding with a grit 80# or grit 120# sand belt or wheel. Then using grit 240# , 320# and lastly 400# sand belts or abrasive flap wheels. Each finer polishing step should be cross-polished 90 degrees from the previous process, and make sure every line from the previous operation has been taken out before you continue to the next step.

Step 3:

Next comes to polishing stage. Start with a hard treated sisal buffing wheel or a natural hard sisal buffing wheel, apply the black polishing compound to the sisal polishing wheel, then polishing the item with medium pressure and 90 degrees to last sanding process. The sisal fibre has natural cutting properties, and dip treated makes the sisal wheel more aggressive, so hard treated sisal polishing wheel is more effective and more efficient. It is very important that you remove orange peel, grinding marks and scratches left from previous abrasive operations and leave a uniform finish.

Step 4:

Buffing stage. Start with a denim buffing wheel or a colour stitched buffing wheel, apply green polishing compound to the wheel, then buffing the pipe with medium pressure. This step will remove dull finish left from last operation, and leave the work piece with a semi-bright finish. Change the denim buffing wheel or colour stitched buffing wheel to loose leaf cotton buffing wheel, and apply white polishing compound to the wheels, buffing the pipe with light pressure. You can get a mirror finish from this step.

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