Description

1. The materials (steel, fibres, etc.)of WKK’s cylinders are carefully selected depending on their eventual use conditions, after verifying the chemical, physical, mechanical characteristics and, where necessary, their stress-corrosion resistance. 2. The fracture mechanics analysis of the steel allows us to define the maximum permissible defects in the cylinders, in order to enable us: -to establish the non-destructive tests in the production line - to guarantee the product fatigue life - to demonstrate that a leak precedes the hypothetical burst of the cylinder. 3. - The cylinders&#**9; surface protection is considered to be a function of the various environmental conditions of use and of the various corrosion agents. 4 - WKK cylinders are manufactured according to a quality control program certified to ISO***1, ISO****9, ISO*****1.