RAL certification for support systems
In the plant engineering sector, support systems play a fundamental structural role in ensuring the stability and integrity of installations. The correct evaluation of performance—in terms of load capacity, resistance, and long-term behavior—is therefore a key aspect during the design phase. In critical conditions, such as high loads, vibrations, or fire exposure, the quality of the support system becomes a decisive factor for overall system safety. It is within this context that RAL certification comes into play.
What is RAL certification
RAL certification is a quality system developed in Germany that defines specific technical requirements for certain product categories, including support systems for installations.
In the context of support systems, the main references are:
- RAL-GZ 655 → support systems (pipe supports)
- RAL-GZ 656 → fire-tested support systems
Unlike traditional performance declarations, the RAL mark is based on a structured process that includes initial testing carried out by independent bodies, periodic production inspections, and continuous verification of compliance over time.
This means that technical data are not simply declared by the manufacturer, but are verified and maintained throughout the entire production cycle.
Scope of RAL certification
RAL certification covers several technical aspects relevant to the design and installation of support systems.
From a mechanical perspective, components are subjected to specific tests to determine load capacities, behavior under stress, and deformation prior to failure. This approach provides reliable data that can be directly used during the sizing phase, without the need for overly conservative assumptions.
A distinctive feature of the RAL system is the standardization of testing methods and calculation criteria. As a result, technical data are consistent and comparable across certified products, simplifying the designer’s work and reducing ambiguities typically found in non-standardized technical datasheets.
Certification does not apply only to individual components, but to the support system as a whole. The interaction between profiles, accessories, and connections is evaluated, as well as the system’s behavior in real installation configurations. This allows for a more accurate representation of on-site conditions.
Another key aspect concerns production control. Maintaining the RAL mark requires periodic audits by third-party bodies and continuous quality monitoring. It is therefore not a one-time certification, but an ongoing process that ensures consistency and reliability over time.
Difference between RAL-GZ 655 and RAL-GZ 656
Within the RAL system, the main certifications for support systems are:
- RAL-GZ 655, which represents the standard for support systems, certifying mechanical performance, load reliability, and production quality. It is the primary reference for most civil and industrial applications.
- RAL-GZ 656, which builds on these requirements by introducing specific fire resistance tests. It evaluates system behavior under extreme conditions, verifying the ability to maintain load-bearing capacity and stability during a fire. It is therefore particularly relevant in applications where fire safety requirements are critical.
Operational advantages of RAL certification
Using RAL-certified support systems provides concrete benefits throughout the different phases of a project:
Design
- Availability of verified technical data
- Reduced uncertainty margins
- Greater accuracy in sizing
Installation
- Easier component selection
- Reduced risk of errors
- Consistency between design and execution
Operation
- Predictable long-term performance
- Higher system reliability
- Reduced maintenance requirements
When to use RAL-certified support systems
The use of RAL-certified systems is particularly recommended in contexts where safety and reliability are critical.
This includes complex industrial installations, infrastructure projects, and large-scale works, as well as environments with high safety requirements, such as hospitals or critical facilities. It is also highly relevant in applications subject to strict regulations, where certification supports project qualification.
In these scenarios, RAL certification should not be considered an optional feature, but a concrete tool for risk reduction.
Conclusion
RAL certification introduces a structured approach to evaluating support systems, based on:
- Independent testing
- Standardized criteria
- Continuous monitoring
In this context, choosing RAL-certified systems allows professionals to operate with reliable parameters and documented performance, reducing uncertainty throughout all project phases.
To learn more about Prosystem’s RAL certifications and access technical documentation:
www.prosystemitalia.com/it/content/17-certificati-ral