Convex guarantees that the open/close mechanism incorporated in its door handles will not break berfore 200.000 openings and closures.



Convex guarantees for chrome plated products or parts of products a 10 year duration without a sign of any corrosion formation on the surface.


Quality Control


On November 2010 CONVEX SA has been certified for the implementation of her own quality system according to the demands of EN ISO 9001:2008. The certificate was issued by TUV HELLAS a worldwide well known company for the credibility of its work. The CONVEX quality system besides other internal processes uses internal controls for the supplied materials, the semi finished products and the final products.

The aim is to obtain constantly exceptional quality of our products in order to satisfy the end user. Special care is given for daily controls checking the behavior of the final coating, which is usually lacquer regarding wear, adhesion and anti-corrosion resistance.

CONVEX upon trying to ensure even more the quality of its products utilizes external certified laboratories which perform tests like :

Resistance test in salt spray cabin according to EN 1670:2007 “Building hardware. Corrosion resistance. Requirements and test methods.”

CONVEX collaborates with Italian laboratory LAPI spa for antifire tests on door handles according to EN 1634 -2: 2008 –“ Fire resistance and smoke control test for door shutter and openable window assemblies and elements of building hardware"



At CONVEX we have implemented the use of the standard BS EN 1906:2012: Building hardware - Lever handles and knob furniture – Requirements and test methods - in order to evaluate the performance of our products. The results from the tests described in this standard and the evaluation of the products correspond to an 8 digit classification as defined by the standard. The tests performed at certified laboratories but also the internal quality controls enable us to classify our products based on this standard. We are in a position to issue certifications for our products referring to this classification.



The Hellenic Copper Development Institute certifies that CONVEX has the right to use the internationally acknowledged trade mark Cu+ on its antimicrobial product range.

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