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    • Home
    • Products
    • Demonstration
    • Certificates
    • Capabilities
    • Quality Control
    • Download
    • Contact
  • Home
  • Products
  • Demonstration
  • Certificates
  • Capabilities
  • Quality Control
  • Download
  • Contact

Quality control

Quality First

In Coretech Flow,  we firmly  believe in "Quality First" because our team  understands our valves  could be used in  most  severe  conditions  and the stake is high  for our end  users  and  environment.   And we also believe  the top-notch  quality  is maintained  through  stringent  procedures  not  the human  interactions. That's why we established  vigorous testing procedures from vendor selection, raw material receipt all the way through final assembly testing to identify non-conformance as early as possible. Catching a defect on our shop floor before  finished goods' leaving our dock is essential for quality management. Quality is our core value and commitment to our demanding customers in today's demanding global marketplace.   

The scope  of our quality  management system  covers all processes  directly and   indirectly related  to the design, manufacture, assembly, and test of our valves. Our goal is to deliver the highest possible quality at  a competitive price. 

non-Destructive test

NDT

Non-destructive testing (NDT) is a wide group of analysis techniques used  in the industry   to evaluate the properties of a  material or component  without causing damage. Commonly utilized NDT methods include ultrasonic test (UT), magnetic-particle(MT), liquid penetrant (PT), and radiographic (RT). Other than outsourced RT, our companies have in-house capabilities to do all these tests to ensure the integrity of materials and components before integration to a valve. 

Ultrasonic Test (UT)

 UT​ is a testing technique  based  on the propagation  of ultrasonic waves  in the object or material tested. In most common UT applications, very short ultrasonic pulse-waves with center  frequencies  ranging    from   0.1-15 MHz,    and   occasionally   up  to  50  MHz,    are transmitted   into   materials   to  detect   internal  flaws   of  pressure  containing  parts  or welding joints. 

Magnetic Particle (MT) Test​

 MT is utilized for defects on and slightly below the valve surface. For quick, low-cost inspections,   MT  is  often the best  NDT  method for  detecting   surface  and  slightly subsurface discontinuities.  

Metallurgy Test

Metallographic analysis is the study of     the    physical     structure    and components   of   metals,    typically using      microscopy      to      analyze properties   of   forged    alloy.     The surface        of     a       metallographic specimen   is   prepared   by  various methods    of    grinding,    polishing, and etching.  After preparation,  it is often   analyzed    using    optical   or electron    microscopy.    Using. only metallographic         techniques,      a skilled     technician    can      identify alloys       and       predict        material properties.

Fire Test

The  test  consists  of  selected   valves  to  a flame  of specific  thermal  power  (jet fire)  for  a specified period (typically 30 or 120 minutes).  The integrity of the component at the end  of the test indicates that the test itself has been passed. The relevant governing specification is the   API6FA.   The  wide  range  of  Master  Valve   products  is   fire-safe   to   meet   customers' requirements on safer plant operating environment.
 

Charpy impact test

The Charpy impact test, also known as the Charpy V-notch test,  is  a  standard   high strain-rate  test  which  determines   the  amount  of energy  absorbed  by  a  material during fracture.

This absorbed energy is a measure of a given material's notch toughness and acts as a tool to study temperature-dependent ductile-brittle transition.  It is widely applied in valve industry for low temp applications.

Low emission test

Valves and pipes are  identified  as the single  largest source of green house gas emission in process plants.

More and more end users demand low emission  test results to meet their commitment and  responsibility to  maintain  a safer  and  more  environment-friendly operations in their plants. 

TA-LUFT and lSO 15848 are popular testing standards for the industry.

 

positive material identification

Positive Material Identification (PMI) is the identification and chemical analysis of various metal alloys  through  nondestructive methods.     PMI  can  be conducted on-site or in the laboratory.   PMI is done by using reliable portable analyzers, allowing the following tasks accomplished:

  • Incoming inspection of alloy materials and components before they enter production
  • Rapid verification of alloys used in the manufacturing process
  • Product material confirmation before shipment

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