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For years, BWB-Betschart AG has been the specialist for anodising, hard anodising, chemical coatings on aluminium and electro-polishing of chrome-nickel-steel. These surface treatment engineering processes are used by customers ranging from local businesses and a local aircraft constructor to larger and smaller industrial companies.

As an additional service, BWB-Betschart AG offers a full manufacturing solution.

Colours Industry (German)

Colours Industry (French)

Range of servicesContactRequest for bidorder formJobs/EducationAddress
AltenrheinStans-OberdorfSchlierenBüren a.A.BätterkindenNiederwangenDresdenBraşovSafnernBWB-Holding
Process   maximum part size
L x W x D		   CrNiSt   Aluminium
Mechanical pre-treatments            
Grinding/Grinding-brushing   Quoted on request   (•)   •
Brushing/Scotching   Quoted on request   (•)   •
Polishing   Quoted on request   (•)   •
Blasting (special fused alumina/glass beads/etc.)   Quoted on request   (•)   •
Chemical pre-treatments            
Alkaline degreasing   3100 x 400 x 1100       •
Etching/ Matt etching   3100 x 400 x 1100       •
Chemical depolishing   700 x 800 x 950       •
Chemical polishing   1150 x 900 x 1000       •
Electrolytic polishing   1250 x 750 x 1100       •
Electrolytic surface conversions            
Anodising/Electrolytic oxidation   3100 x 400 x 1100       •
Hard anodising/Hard electrolytic oxidation   3100 x 400 x 1100       •
Bilatal anodising   1500 x 500 x 900       •
Electrochemical polishing   2400 x 850 x 1050   •    
Supplementary coloration processes            
Adsorptive coloration Sanodal          
- Black BWB 210 3100 x 400 x 1100       •
- Dark blue BWB 220 3100 x 400 x 1100       •
- Mid-blue BWB 221 3100 x 400 x 1100       •
- Light blue BWB 222 3100 x 400 x 1100       •
- Orange BWB 240 500 x 600 x 900       •
- Dark red BWB 250 3100 x 400 x 1100       •
- Light red BWB 251 3100 x 400 x 1100       •
- Brass BWB 260 500 x 900 x 900       •
- Argentan BWB 261 500 x 900 x 900       •
- Dark green BWB 313 500 x 700 x 950       •
- Light green BWB 314 500 x 700 x 950       •
- Grey BWB 320 900 x 900 x 900       •
- Violet BWB 340 500 x 700 x 900       •
Chemical surface conversions            
Chromating Alodine 1200 yellow 3100 x 400 x 1100       •
Chromating Alodine 1500 transparent 700 x 410 x 900       •
RoHS-compliant chromating Alodine 160 yellow 920 x 400 x 1100       •
RoHS-compliant chromating Alodine 400 transparent 3100 x 400 x 1100       •
Acid passivation   3100 x 400 x 1100       •
Pickling and passivation   1450 x 780 x 1050   •    
Surface post-treatments            
Teflon impregnation after hard anodising 450 x 450 x 900       •
Sealing Sodium Dichromate   3100 x 400 x 1100        •
Pre-Sealing with Nickelacetate   850 x 400 x 1100        •
Services            
Full manufacturing   Quoted on request       •
Profile machining   Profiles up to 8200 mm       •
Supplementary work in upstream or downstream process   Quoted on request   •   •
Transport   Internal and external        
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