Proofload Testing: Certainty about the actual strength of your lifting equipment
You want to be able to rely on your equipment with complete confidence. But can that steel wire rope or lifting block truly handle the load? With proof load testing and tensile testing, Mennens gives you that certainty. We test your lifting equipment under controlled conditions: in our workshop or at your location.
Je wilt blind kunnen vertrouwen op je materiaal. Maar kan die staalkabel of dat hijsblok de last écht aan? Met proofload testing en trekproeven geeft Mennens je die zekerheid. Wij testen jouw hijsmiddelen onder gecontroleerde omstandigheden: in onze werkplaats óf bij jou op locatie.
- Grootste capaciteit Benelux: Testen tot wel 14.000 kN in Dongen.
- Mobiele service: Wij komen naar je toe voor minimale downtime.
- Veiligheidscertificaat: Na de test ontvang je direct een testverklaring.
Measuring is knowing: Prevent accidents
A certificate says a lot, but a physical test says everything. In practice, we regularly see lifting equipment that appears compliant on paper but still fails during testing due to metal fatigue, internal corrosion, or manufacturing defects.
A real-life example: Recently, we tested a lifting beam with a theoretical capacity of 30 tonnes. During the proof load test, the beam failed completely—before the maximum load was even reached. Because this occurred in our controlled test setup, a potentially fatal workplace accident was prevented.
At Mennens, we don’t just test to meet standards—we test to guarantee your safety.
What do we test? (Proof load & break testing)
We perform two types of tests, depending on your objective:
Proof load test (non-destructive): We load the equipment beyond its working load limit (WLL), according to a specified factor (e.g. 1.5x or 2x). Purpose: to demonstrate that the equipment can be used safely.
Break test (destructive): We load the equipment to failure to determine its actual breaking load (MBL). Purpose: to validate a design or perform batch testing.
We test, among others:
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Steel wire ropes and Dyneema® slings
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Chain assemblies and shackles
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Hoists and bottom blocks (single- and double-sheave)
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Custom-built equipment and structural fabrications
Frequently Asked Questions
WLL stands for Working Load Limit (the maximum load you can lift safely). MBL stands for Minimum Breaking Load (the force at which the equipment fails). During a proof load test, we go above the WLL but stay well below the MBL to prevent damage.
This depends on the applicable standards (such as NEN or EKH). A proof load test is often required when new lifting equipment is put into service, after major repairs, or as part of periodic inspections.
Be certain about what you're lifting?
Don’t take risks with the safety of your people and equipment. Whether you want to test a heavy-duty shackle or an entire batch of lifting slings on-site, Mennens takes care of it.
