Quality Assurance

  • Quality policy
  • Quality objectives
  • Quality management
  • process control
  • Strict management, high precision of manufacturing, first-class quality, continuous innovation, continuous improvement to satisfy the customers

  • The acceptance rate of first inspection reaches 98%


    The rate of customer opinion processing reaches 90%


    The rate of customer satisfaction reaches 98%

  • A.  We establish and effectively implement the ISO9001 quality management system, ISO14000 environmental management system, GB/T28001 occupational health and safety management system.


    B.  We set up a fully functional physical and chemical test center with advanced equipment to detect the physical and chemical properties of metal and nonmetal raw materials and products.


    C.  We establish X - ray, ultrasonic, penetration and other nondestructive testing room to detect the internal defects and appearance quality of the welding seam.


    D.  YIDUO has a variety of pipe fittings and compensator hydraulic pressure test machine to ensure the strength and tightness of the product is effectively controlled.


    E.  Anticorrosion performance test of anticorrosive layer.

  • The whole member participation, whole process control, production, technology, sales, services and  other comprehensive quality management, YIDUO takes customer satisfaction as the standard.





impact test equipment
Radiographic Test
Tensile and impact test piece
Hydrotest Machine
Ball joint compensator testing machine
Universal testing machine
Ultrasonic Test
Magnetic Test