We ensure the highest standards of quality and strength using a strategy of quality control (TQC) which allows us to constantly improve the precision of our designs and products, ensuring the reliability of its operation.

Raw material quality testing

Raw material selected and certified under strict quality standards and proven through the following tests for the manufacture of our products.

  • Mesh Analysis
  • Particle Size Distribution
  • Surface Area
  • Cation Exchange Capacity
  • Tensile Strength
  • Moisture Content
  • Coefficient of Expansion in Glaze & Body

Product Quality testing

To ensure compliance with the requirement of our customers and our high quality standards we do a rigorous visual and the following dimensional inspections as requested by the client:

  • Mechanical strength tests:

  • Flexural modulus test
  • Ultimate mechanical strength test
  • Cantilever test

  • Bushing leak test
  • Thermo shock test
  • Electrical tests:

  • Dry voltage withstand test
  • Dry voltage flashover test
  • Megger test
  • Partial Discharge to surge arresters

  • Audit of assembly torque
  • Fire Porosity and Density tests


In order to reduce risks in the product and ensure their commitment to quality, Celeco has certified the properties of its porcelain against national and international standards.

  • ISO 9001
  • ISO 14001
  • Certified supplier CFE