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%

Incoming Quality Control

warehouse entry material inspection – warehouse entry inspection record, Physical and chemical examination report

Manufacture Quality Control

  • Blanking test – grades, dimension, size, identification
  • Heat treatment – heat treatment temperature, time
  • Welding – welding condition, welding record
  • Others – size, surface quality, identification

Final Quality Control

  • Dimensions – outside diameter, wall thickness, length, both ends, out of roundness
  • Surface
  • Others – chemical analysis, tensile strength, intergranular corrosion, grain size, NDT test, hydrostatic test, impact test
  • Marking – brand, product name, steel No., sizes, standard, heat No., lot No.
  • Packing
  • Factory file – receiving report, testing report, physical and chemical examination report, NDT report, heat treatment report.