SISTEMA TRIPLEX® is a high aesthetic value corrosion protection for steel products, commonly known as iron, and metal structural work.


Increased protection life expectancy
The protection of iron elements is an aspect that should not be underestimated: a properly designed and built element, has a longer life expectancy than an element that has not undergone an anti-corrosive process suitable for its use.

A dedicated version for every environment
Thanks to the different versions of the SISTEMA TRIPLEX®, it is possible to fine-tune the best protective solution according to the environmental conditions in which the element is required to operate.
Excellent anticorrosion performance guaranteed in all environmental conditions, whether mild natural areas or aggressive marine atmospheres, in order to reduce the need for expensive interventions and maintenance.

Solvent and VOC-free
The powder coating process, solvent-free, allows you to achieve a homogeneous thickness of film over the entire element.

Architectural Paints
The paints used are designed to withstand atmospheric agents and UV rays, the main cause of fading colours.

Guaranteed paint adherence
The secret of the paint adhesion lies in the pre-treatment. In the SISTEMA TRIPLEX® systems, the pre-treatments are constantly monitored and are performed automatically. Something that can not easily take place in manual mode and on worksites.

Sole interlocutor
SISTEMA TRIPLEX® is a single integrated cycle: galvanising and painting are the work of an expert in both technologies. Forget the discussions on the allocation of responsibilities.


Unprotected steel degrades rapidly showing the formation of corrosion and/or rust. SISTEMA TRIPLEX® allows maximum freedom of design ensuring perfect corrosion protection combined with a high level aesthetic finish. Aesthetics is the goal of every architectural project; aesthetics, high life expectancy and eco-sustainability are the goal of every intelligent design.
SISTEMA TRIPLEX® allows you to:
  • Protect steel against rust
  • Preserve the structural characteristics of the metal elements
  • Safeguard the sturdiness of the weld seamse
  • Achieve maximum aesthetic performance
  • Achieve the best possible inclusion of the work within the installation context by using the most appropriate colours
  • Preserve the environment and non-renewable resources
SISTEMA TRIPLEX® can be applied to all manufactured products made of carbon steel, commonly called "iron" with maximum dimensions of 13,000x2,800x200mm, or 13,000x2,500x1,600mm and a maximum weight of 2,000 kg/piece.
SISTEMA TRIPLEX® can be used in all environments: the standard version can be used in natural, urban and industrial areas.
Special versions are designed for use in marine and off-shore environments or for heavy industrial uses.
Some of the most common elements treated are: gates, fences, railings, beams, roofing structures, storey buildings, pergolas, gazebos, as well as finished products such as lamp posts, litter bin posts and street furniture. View some application examples in the section "Projects".

It is based on the perfect combination of SIGILLO VERDE® hot-dip galvanising and POWDER COATING by means of an intermediate nano-ceramic layer in order to obtain a film with high anti-corrosion performance and exceptional aesthetic qualities.
The three phases comprising the SISTEMA TRIPLEX® were completed thanks to the use of nanotechnologies: a zinc bath specifically designed to be painted, a pretreatment which is perfectly compatible with the zinc alloy and the special paints which have been for the zinc based support. A complete cycle which is interconnected at every phase to ensure adhesion of the film of paint to the metal. An essential process to achieve an excellent finish
In technical jargon this coupling is called a duplex system.
Galvanising by "Mario" and painting by "Piero" is common practice, too bad neither of them knows what the other is doing! And the results are there for all to see: flaking paint, faded aesthetics, endless disputes with no-one accountable. The user is the party that pays the price, stuck with a product which does not conform to his expectations.


The SISTEMA TRIPLEX® comes with a user and maintenance manual, an interesting guide on how to enjoy and prolong the anti-corrosive performance of the treatment.
You can download the manual and other technical documentation in the download
Declaration of Conformity according to the UNI EN 10204 standard for every lot.


The SISTEMA TRIPLEX is performed in a Category 1 zinc bath according to EU standard EN 24286, the only one that allows us to preserve all the mechanical characteristics of steel and weld seams otherwise to be verified, as required, according to EU Standard EN 1090.
The SISTEMA TRIPLEX is performed using EMAS approved systems, the European environmental management regulation, and has an Environmental Product Declaration EPD.


Sistema-triplex-stratigrafiaThe SISTEMA TRIPLEX® is an anticorrosion protection and aesthetic finish cycle which exploits hot-dip galvanising and powder coating technologies.
Nord Zinc has coined the SISTEMA TRIPLEX® brand name to identify the technological achievement of scientific research supported by chemical and paint multinationals:

  • The Nord Zinc zinc bath is specifically designed to be painted.
  • The nano-ceramic chemical treatment before painting is designed to couple perfectly with the zinc alloy that generates the zinc bath designed by Nord Zinc.
  • The paints used are specially formulated to be applied to hot-dip galvanized supports.



The SISTEMA TRIPLEX® allows you to achieve exceptional life expectancy.
It is necessary to distinguish corrosion performance from aesthetic performance.
In a natural environment (e.g. the countryside) the life expectancy of the corrosion protection is well over 120 years, whilst in an urban environment, the protection expectancy is over 100 years (extracts from the Environmental Product Declaration EPD).
The paint film, intended as colour and gloss, has a life expectancy of from 10 to 25 years depending on the performance level required by the customer.
Ask our technicians for a customised application solution.
  • UNI EN ISO 1461 “Hot-dip galvanising”
  • UNI EN ISO 14713 “Hot-dip galvanising”
  • UNI EN ISO 12944 "Corrosion protection of steel structures by protective paint systems"
  • UNI EN 13438 "Powder coatings for galvanized steel products used for construction purposes"
  • UNI EN ISO 2409: Cross-cut test
  • UNI ISO 9227: Salt fog test
  • UNI ISO 6270: Water condensation
  • UNI EN ISO 1514: Standard panels for tests

SISTEMA TRIPLEX® must be performed at the Nord Zinc spa facilities. It can not be done on-site and it is therefore necessary for the product manufacturer to deliver the parts to the facilities for processing.