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Our large parts plant
BWB-Altenrhein AG possesses the most modern large parts anodising plant within the BWB Group. This guarantees the availability of all anodising processing and colouring processes for components for use in architecture which are standard in Europe. Our very wide range of different colorations is particularly popular with architects and designers: in natural colours or colourless, or in various brown-beige colour tones, grey tones through to black and a bright palette of other colour tones.

Your components - Our treatment

We offer sulphuric acid anodising, hard anodising and chromic acid anodising/chromic acid anodising for aircraft constructors. Altenrhein serves customers in aviation and aerospace, medical engineering and machine engineering.

Colours Architecture (German)

Colours Architecture (French)

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		   Magnesium   Aluminium   Large part   Small part
Mechanical pre-treatments                    
Grinding/Grinding-brushing   Quoted on request       •   •   •
Brushing/Scotching   Quoted on request       •   •   •
Polishing   Quoted on request       •       •
Chemical pre-treatments                    
Alkaline degreasing   7500 x 1200 x 2200       •   •   •
Etching/ Matt etching   7500 x 1200 x 2200       •   •   •
Chemical polishing   1000 x 420 x 1200       •       •
Electrolytic surface conversions                    
Anodising/Electrolytic oxidation   7500 x 1200 x 2200       •   •   •
Anodising to "British Standard" quality   7500 x 1200 x 2200       •   •   •
Anodising to "SSG Structural Glazing" quality   7500 x 1200 x 2200       •   •   •
Anodising with increased hardness   7500 x 1200 x 2200       •   •   •
Hard anodising/Hard electrolytic oxidation   3900 x 700 x 1200       •       •
Chromic acid anodising   3300 x 700 x 1200       •       •
Supplementary coloration processes                    
Adsorptive coloration

Sandalor C60 - C67
Bausilber 6 / 7
Messing 8
Gold 9
Bronze 3 / 4 / 5 / 21

 7500 x 800 x 2400       •   •   •
Electrolytic coloration Colinal 3115 - 3180 7500 x 800 x 2400       •   •   •
Spectrocolor coloration Spectrocolor 7500 x 800 x 2400       •   •   •
Integral coloration Permalux 7500 x 800 x 2400       •   •   •
Adsorptive coloration Sanodal                  
- Black BWB 210 3000 x 550 x 1200       •       •
- Dark blue BWB 220 1900 x 500 x 1200       •       •
- Mid-blue BWB 221 1900 x 500 x 1200       •       •
- Light blue BWB 222 1900 x 500 x 1200       •       •
- Turquoise BWB 230 900 x 500 x 1200       •       •
- Orange BWB 240 900 x 350 x 1100       •       •
- Dark red BWB 250 1900 x 500 x 1200       •       •
- Light red BWB 251 1900 x 500 x 1200       •       •
- Brass BWB 260 1800 x 500 x 1200       •       •
- Argentan BWB 261 1800 x 500 x 1200       •       •
- Gold Gold 1800 x 500 x 1200       •       •
- Sunflower yellow BWB 270 900 x 350 x 1100       •       •
- Yellow BWB 280 950 x 450 x 1100       •       •
- Light yellow BWB 281 950 x 450 x 1100       •       •
- Dark green BWB 313 900 x 500 x 1200       •       •
- Light green BWB 314 900 x 500 x 1200       •       •
- Grey BWB 320 3000 x 550 x 1200       •       •
- Violet BWB 340 900 x 450 x 1200       •       •
- Bronze (Small Parts) Nr. 3 / 5 / 21 900 x 350 x 1100       •       •
- Colinal (Small Parts) 3115 - 3180 1700 x 700 x 1200       •       •
Chemical surface conversions                    
Chromalising Alodine 1220 S yellow 3400 x 700 x 1400       •       •
Chromalising Alodine 1500 transparent 3400 x 700 x 1400       •       •
RoHS-compliant chromiting Alodine 160 yellow 3400 x 700 x 1400       •       •
Acid passivation   7500 x 1200 x 2400       •   •   •
Black pickling   8000 x 300 x 300   •           •
Surface post-treatments                    
Painting   Quoted on request   •   •   •   •
Bichromate sealing   3300 x 750 x 1300       •       •
Teflon impregnation after hard anodising 1000 x 500 x 1200       •       •
Anti-noise coatings   Quoted on request       •   •    
Film coating   Quoted on request       •   •   •
Services                    
Supplementary work in upstream or downstream process   Quoted on request   •   •   •   •
Transport logistics   Internal and external           •   •
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