Industrial finishing

Shot blasting of metal parts

We carry out surface treatment to clean, matt or prepare metal parts before painting, coating or a specific finish.

Cleaning · Texture · Preparation

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What is shot blasting?

Shot blasting projects abrasive against the part to clean the surface and give it a uniform texture. It removes rust, mill scale and other process residues that would otherwise be trapped under any subsequent layer.

What it solves is coating durability. Paint applied to a dirty or overly smooth surface eventually lifts; on a blasted surface, the layer keys in and lasts. That is why blasting is the standard step before painting or coating.

It is also used as a finish in its own right when a uniform matt appearance is wanted across the whole part.

Materials and thicknesses for shot blasting

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
  • PDF
  • 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 shot blasting

Technical capabilities for shot blasting
Purpose Surface cleaning, matting and preparation for coating
Use Step before painting or coating, or a final matt finish
Materials Metal parts made in the same plant or supplied by the customer

Applications and types of custom metal parts

  • Surface preparation before painting or coating.
  • Removing rust and process residue from metal parts.
  • Uniform matt finish on visible parts.
  • Evening out the surface of welded assemblies.

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.

All metal manufacturing services

Frequently asked questions

01Shot blasting

What is shot blasting?

It is a treatment that projects abrasive at the part to clean its surface and give it an even texture. It removes rust, mill scale and other process residues.

Why is a part blasted before painting?

For the durability of the coating. Paint applied to a dirty or overly smooth surface eventually peels; on a blasted surface the coating keys in and lasts. That is why blasting is the usual step before painting or coating.

Can it be used as a final finish?

Yes. It is also used as a finish in its own right when an even matt appearance is wanted across the whole part.

02Parts and materials

Do you blast parts you did not make?

Yes. We treat metal parts made in our plant and also parts supplied by the customer.

Can stainless steel be blasted?

Stainless steel needs specific precautions so the surface is not compromised. Ask us about the particular part and we will recommend the most suitable treatment.

What is it used for on welded assemblies?

To even out the surface and remove process residues before coating, so the whole assembly has the same appearance.

03Coatings and preparation

Do you do the painting after blasting?

Blasting is the preparation step we carry out in the plant. Painting and other coatings are done by specialist workshops we work with regularly, but we handle the coordination and transport: you place one order and receive the finished part.

What surface preparation grade do you achieve?

If your project requires a standardised preparation grade, state it on the drawing and we will confirm feasibility.

04Engineering office and confidentiality

Are my drawings treated confidentially?

Yes. Drawings are used only to prepare the technical assessment and are not shared with third parties. If you need a signed confidentiality agreement, you can send it to us.

What if I only have a sketch or a technical question?

Send us a dimensioned sketch or tell us what you need. Our engineering office reviews it, asks whatever it needs to and, if necessary, helps you define the part: advice is part of the service, for metalworkers and small workshops too.

05Process, lead times and delivery

What happens after I send my request?

  • Enquiry: you send the drawing, material, thickness, quantity and deadline
  • Review by our engineering office and manufacturing plan
  • Quote and confirmation, with alternatives where there are any
  • Manufacturing within the same plant
  • Inspection, packing and delivery

What lead time does a shot blasting order have?

It depends on the part, the quantity and the other processes involved. In the quote request you can choose a 24/48 h urgent service (with a surcharge), about one week, a flexible deadline or a specific date, and we confirm it with the quote.

Can you deliver the parts to our factory?

Yes, with our own fleet. We prepare the load and deliver the parts palletised and protected to the agreed point. We usually serve the provinces of Tarragona and Barcelona, and look at other destinations case by case.

06Sectors and experience

Which sectors do you provide shot blasting for?

We manufacture for industrial companies in very different sectors. Some of the most common:

  • Automotive
  • Food industry (stainless steel)
  • Agricultural machinery
  • Construction
  • Structural steelwork
  • Energy
  • Street furniture

It is common in structural steelwork, construction, agricultural machinery and street furniture, where parts are usually painted. If your sector is not listed, tell us about the part and we will confirm whether we can make it.

Why choose Catà Germans for shot blasting?

We are a family company founded in 1958, with more than 65 years in industrial subcontracting of metal parts.

  • Every process under one roof: cutting, forming, machining, welding and finishing
  • Our own engineering office, which reviews the drawing before manufacturing
  • Direct contact with the people who make the part
  • One order and one point of contact, right through to delivery

07Quotes, files and orders

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.

Let's begin

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