Surface treatments for aircraft

The BWB Group offers a wide range of surface treatments consistent with the standards and procedural regulations of major aircraft manufacturers. Several of the Group’s plants possess the required EN 9100 aerospace industry certification and Nadcap process certification. We have many years experience in the aviation industry, and with the relevant processes and approvals, and we are partner with the entire supply chain.


Bonderite M-CR Alumigold


Processes for aluminium parts

  • Anodising / electrolytic oxidation (processes with chromic acid CAA / sulphuric acid SAA / tartaric acid TSA)
  • Hard anodising
  • Chromating (Alodine 1200 yellow, Bonderite M-CR Alumigold, Alodine 1500 transparent and Surtec 650 Cr6-free)
  • RoHS-compliant chromating, Alodine 160 yellow and Alodine 400 transparent (CH only)
  • Primer varnishing and top coat
  • Labelling
  • Non-destructive crack test (AITM 6-1001) (RO only)
  • Chromating
  • Coloration of anodised coating (electrolytic and adsorptive)
  • Machining of aluminium parts via the milling centre and profile processing machines (CH only)

Processes for titanium components

  • Titanium etching
  • Titanium anodising

Galvanic processes for metallic base material

Galvanic coating of the most common base material used in aviation (aluminium, titanium, steel, chromium nickel steel, casting materials, copper/brass) and other metals:

  • Zinc coating (blue passivation)
  • Cadmium plating
  • Nickel plating (galvanic and chemical)
  • Silver plating

Additional processes

  • Etching
  • Passivating
  • Phosphating
  • Black pickling


Special solvent- and/or water-based varnishes:

Base coats, top coats, colour coats, conductive coating, bonding pre-treatment with BR127, erosion protection coating, tank room varnish, bonded coating, anti-slip coating, wear-resistant coating, heat-resistant coating

Additional processdures, pre- and post-transport processes

  • Various means of cleaning and degreasing (aqueous -alkaline, organic solvents)
  • Blasting processdures (strain hardening, detergent, abrasive, decorative)
  • Rivet protection and edge seals for aircraft components and assembly units, implementation of entire subassemblies (RO only)
  • 3D measurement of critical components according to the appropriate measuring protocol (CH only)

To make an offer, we need the following information: technical drawings / blueprints, quantity, deadline, special demands.


Contact person

Your contact person in Germany

Marcus Kolb

Marcus Kolb

Manager Sales and Marketing
  +49 351 8831 450

Nehlsen-BWB Flugzeug-Galvanik Dresden GmbH & Co. KG

Grenzstraße 1a / 2
D-01109 Dresden
  +49 351 8831 400

Your contact person in Romania

Robert Ciobotea

Robert Ciobotea

Plant Manager
  +40 368 443 460

BWB Surface Technology S.R.L.

Str. Hermann Oberth 30
RO-507075 Ghimbav / Braşov / Judetul Braşov
  +40 368 443 460

Your contact persons in Switzerland

Philipp Muheim

Philipp Muheim

Consultancy and Sales
  +41 41 618 61 96

BWB-Betschart AG

Dallenwilerstrasse 20
CH-6370 Stans-Oberdorf
  +41 41 618 61 61

Daniel Stutz

Daniel Stutz

Sales Manager Industry
  +41 71 858 61 82
  +41 79 792 85 21

BWB-Altenrhein AG

Park Altenrhein
CH-9423 Altenrhein
  +41 71 858 61 61