The high quality of NTT products is confirmed by leading Russian research institutes and is achieved by:
-
Highly qualified personnel
-
Testing in accordance with global standards in our own certified laboratory
-
High precision equipment
-
Multi-level quality control system
Quartz sand and roving are tested for:
-
Strength
-
Weight loss on ignition
-
Moisture of mass fraction
-
Particle size composition
Resin is tested for:
-
Viscosity
-
Gelling rate
-
Polyester resin density measured by densitometer
-
Exothermic peak
-
Styrene content
-
Acid Number
-
Dry residue in the liquid polyester resin
-
Barcole hardness of the cured polyester resin
-
Cobalt mass fraction
NTT products undergo the following quality tests:
-
Visual inspection
-
Geometrical control
-
Physical-mechanical parameters inspection
-
Tightness control of pressure pipes and couplings
-
Inspection and measurement of pipe stiffness
-
Barkol hardness test