Quality Assurance
GRAT Quality Inspection
Over 100 test items and standards, exceeding national and industry requirements. Quality control and management implemented via CRM and ERP systems.
We aim to achieve 100,000‑cycle trouble‑free operation for products with minimum budget: maintenance‑free with zero after‑sales repair. Products operate reliably upon delivery without routine maintenance or servicing.
Flow Test
Flow characteristic testing is performed under standard test conditions to accurately calibrate valve flow coefficients, ensuring flow efficiency and control accuracy during fluid transmission.
Air Tightness Test
Sealing performance is tested by pressure application and pressure holding method to guarantee zero medium leakage under working pressure and secure system operation.
Aging Test
Long‑term continuous running aging tests verify material fatigue strength and component durability of electric actuators and valves to meet required service‑life specifications.
3D Coordinate Measurement
High‑precision 3‑coordinate measuring technology accurately verifies critical geometric dimensions and geometric tolerances of components to ensure conformance with design specifications.
Torque Test
Comprehensive testing covers output torque of electric actuators and valve opening‑closing resistance torque, verifying power matching and operational stability under rated working conditions.
High‑Low Temperature Cycling Test
High‑low temperature cycling tests simulate extreme environments to evaluate performance stability and structural reliability of electric actuators and valves under drastic temperature variations.