Quality System

Quality policy

  • Establish quality system completely
  • Comply with the regulations
  • Continuous improvement
  • Safety production
  • Enhance the brand
  • Enhance customer satisfaction.

Quality objective

  • Final product inspection pass rate greater than 96%;
  • On time delivery rate greater than 90%

Quality system list

    1. Testing preparation
    • 1.1. prepare testing documents – tube, pipe and fitting test operation instruction
    • 1.2. prepare testing report
    • 1.3. check test tools – tools certificate, check record
    • 1.4. testor required – testor list
    2. Testing approved
    • 2.1. warehouse entry material inspection – warehouse entry inspection record, Physical and chemical examination report
    3. Process inspection
    • 3.1. blanking test – grades, dimension, size, identification
    • 3.2. heat treatment – heat treatment temperature, time
    • 3.3. welding – welding condition, welding record
    • 3.4. others – size, surface quality, identification
    4. Final products testing
    • 4.1. dimensions – outside diameter, wall thickness, length, both ends,
    • 4.2. surface –
    • 3.3. others – chemical analysis, tensile strength, intergranular corrosion, grain size, NDT test, hydrostatic test, impact test
    • 3.4. marking – brand, product name, steel No., sizes, standard, heat No., lot No.
    • 3.5. packing
    • 3.6. Factory file – receiving report, tsting report, Physical and chemical examination report, NDT report, heat treatment report, mill test certificate
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