Polishing of metal parts
We work the surface finish to reduce marks, improve appearance and leave parts ready for end use or further treatment.
Visual finish · Surface preparation
What is polishing?
Polishing works on the surface of the finished part: it evens out the texture, reduces process marks and, where required, blends weld beads until the joint is no longer visible.
It is the process that decides how the finished part looks. On visible components — especially stainless steel — perceived quality depends largely on this final step.
It is also used as preparation: a uniform, polished surface is a better base for a coating or subsequent treatment.
Materials and thicknesses for polishing
Metals and sheet thicknesses we work with as standard. If your industrial project needs a material that is not in the table, say so in your enquiry and our engineering office will confirm whether we can handle it.
This service works with the same materials and thicknesses as the rest of the plant. The full table is on the Sheet metal laser cutting page.
CAD file formats accepted for quoting
- DXF
- DWG
- STEP / STP
- STL
- IGS / IGES
- PNG
- JPG
With DXF, DWG or STEP we work straight from your file geometry: no need to redraw the part, and the quote comes back sooner.
We do more than check the drawing: we advise you on nesting (how the sheet is used) so you get the lowest possible price per part before anything is cut.
How our engineering office works
If you would rather not fill in the form, send the drawing straight to cata@catagermans.com.
Confidential handling. Your drawings are only used to prepare the technical assessment and are not shared with third parties. If you need a signed non-disclosure agreement, send it over.
Technical capabilities for polishing
| Purpose | Even out the surface, reduce marks and blend weld beads |
|---|---|
| Typical materials | Stainless steel and the other metals we work with |
| Use | Final finish or preparation before coating |
Applications and types of custom metal parts
- Visible stainless steel parts.
- Blending weld beads on assemblies.
- Evening out the surface before a treatment.
- Improving the appearance of finished product.
Sectors we manufacture for
We manufacture for industrial companies across very different sectors. These are some of the most common ones, but not the only ones: if yours is not listed, tell us about the part and we will confirm whether we can make it.
- Automotive
- Food industry (stainless steel)
- Agricultural machinery
- Construction
- Steel structures
- Energy
- Street furniture
Why work with Catà Germans
- Every process under one roof
- Cutting, forming, machining, welding and finishing in the same plant. We handle the whole logistics side so you receive the parts palletised and protected at your own factory, anywhere in Catalonia and the surrounding area, on the agreed lead time.
- In-house engineering office
- We review the drawing before manufacturing and prepare production from CAD/CAM. If something does not add up, we ask you instead of interpreting it ourselves. And if what you have is a sketch or a question, we will help with that too: advice is part of the service.
- From drawing to finished product
- Some finishes, such as painting or zinc plating, are done with specialist workshops. We handle the coordination and deliver with our own fleet: a single order and a part ready to fit.
- Raw material in stock
- We keep sheet and tube permanently in stock, so many standard jobs can start without waiting for material.
- Over 65 years of the trade
- A family business founded in 1958, specialised in industrial subcontracting of metal parts. You deal directly with the people who make the part.
Frequently asked questions
Can you make the weld invisible?
On many parts yes, by planning the welding process and the polishing together. The result depends on material, geometry and the finish required; we assess it from the drawing.
Which finish grades do you offer?
If your project calls for a particular finish, say so in your enquiry and we will confirm whether we can achieve it.
Is polishing compatible with painting afterwards?
Yes, and it is often the preceding step: a uniform surface is a better base for coating. Let us know what treatment the part is destined for.
Which file formats do you accept?
We accept PDF, DXF, DWG, STEP/STP, STL, IGS/IGES and also PNG or JPG images. If you do not have a final drawing yet, send us a dimensioned sketch and we will review it all the same.
Do you make one-off parts or only production runs?
We handle one-off parts and prototypes as well as small, medium and large batches and repeat production. You can specify this in the quote request.
How quickly do you reply to an enquiry?
We send the technical response as soon as possible once we have the drawing and the part details.
Do you offer painting, zinc plating or other surface finishes?
You can include them in the order. These finishes are carried out with specialist workshops we work with regularly, but we handle the coordination and the transport: you place a single order and receive the finished part.
Can I combine several processes in one part?
Yes — that is the normal way we work. A part can go through laser cutting, bending, welding and finishing inside the same plant, under a single order and a single point of contact.
Request information or a quote
Send us the drawing and the part details and we will come back with a technical answer as soon as possible.
Reply as soon as possible