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Quality and safety are not just a matter of materials and the appropriate technology but also depend on external inspections.

A&B is a certified contractor and welding specialist. Our products meet German and European standards as well as comply with various non-European directives.


  • DIN EN ISO 3834-2 welding specialist
  • Certified AD-HP0 manufacturer
  • Certified Contractor as per WHG
  • ASME U stamp holder
  • China Stamp / Manufacture License of Special Equipment PR of China (SELO) D1
  • EN 1090 bis EXC 3