How to Read and Verify a Conveyor Belt Test Certificate?

Why Certificate Verification Is Critical

Conveyor belt certificates are the primary quality assurance document that links a delivered belt to its tested performance properties. Unfortunately, falsified, outdated, or misrepresented certificates are common in the global belt market. Knowing how to read and verify a certificate protects your operation from substandard product that may fail prematurely or create safety hazards.

Essential Elements of a Valid Certificate

1. Belt Identification

• Belt type designation (e.g., "EP315/3, Grade W, 8+4mm covers")
• Manufacturer name and location
• Batch/lot number that matches the delivered belt markings
• Belt width and length covered by the certificate

2. Test Standard Referenced

• Specific standard cited: "DIN 22102 Grade W" or "EN ISO 340" or "AS 4606" —?not just "meets international standards"
• Year of standard edition tested to (e.g., "DIN 22102:2014")

3. Test Results —?What Must Be Reported

For DIN 22102 Grade W, the certificate must show measured values for all three properties:

Red flag: A certificate that only states "Complies with DIN 22102 Grade W" without showing actual measured values cannot be verified and should be rejected.

4. Test Laboratory Details

• Laboratory name, address, and accreditation number
• ILAC (International Laboratory Accreditation Cooperation) mutual recognition —?verifies the lab is internationally accredited
• Test date —?should be within 3 years for rubber properties; within 1 year for safety-critical properties (FR belts)

5. Authorisation

• Signed by authorised laboratory representative (not just a stamp)
• Not just a manufacturer's declaration —?must be from an independent third-party test laboratory

How to Verify an ILAC-Accredited Laboratory

Go to ilac.org and search for the laboratory name. If the laboratory is ILAC-accredited, it will appear in the database with its scope of accreditation. If it does not appear, the certificate is not from an accredited laboratory and should not be accepted for safety-critical applications.