Quality

Quality tests are carried out by our expert personnel and engineers in accordance with statistical quality control method at our on-site laboratory within the framework of the principles of sustainability, raw material tests, maximum durability, bearing capacity and manufacturing defects/errors.
Suppliers audits are carried out regularly from production to shipment, concurrently with our processes according to the principles of Total Quality Management & Quality Standards.

Aspects of quality tested in our own labs include the following:

• Dimensions (internal and external diameter and length)
• Gluing
• Straightness of the tube
• Crush resistance of the tube
• Moisture content of the tube
• Dimensional stability of the tube (shrinkage)
• Smoothness/roughness of the outer surface
• E-module of the tube (high frequency vibrations)
• Radial crush (compression over the entire surface of the tube)
• Dynamic load – pressure on the tube through the combination of weight and winding speed