GSTech GmbH

 Your supplier for aluminum castings

Sand casting up to 1 t
Gravity die casting up to 330 kg
High pressure die casting up to 20 kg

Processing of all casting processes with the highest technical casting requirements

About us

GSTech has been a reliable and competent supplier of machined and leak-proof cast aluminum parts since 1971.

Our services

We have decades of experience in the field of aluminum welding in combination with machined cast parts. This results in technical and economic alternatives for our customers.

Sand Casting

  • Gas-proof castings up to 1 t
  • Hand moulding up to 3000x3000x800 mm
  • Castings taken from polystyrene moulds 

Die Casting

  • Gas-proof castings up to 20 kg
  • Casting machines up to 3000 t
  • Tools are designed and manufactured in-house by CAD 

Gravity Die Casting

  • Gas-proof castings up to 330 kg
  • Dimensions up to diameter 1800 mm
  • Tools are designed and manufactured in-house by CAD 



Fully automatic milling- and turning machines

  • 24/7
  • Weights up to 100 kg
  • Dimensions up to 1000 mm

State-of-the-art CNC processing centres

  • Dimensions up to 1050 mm
  • Travel up to 4000 x 1200 x 1400 mm 


  • Gas-proof welding of casted parts
  • Gas-proof welding of sheet metal
  • Manual and fully automatic welding


  • Hardness testing
  • Chemical analysis
  • Tensile testing equipment
  • Helium leak testing
    • Fully automatic helium testing up to 100 kg
    • Manual helium testing up to 1000 kg
  • Pressure testing up to 100 bar 


Approvals / Certifications / Personnel

  • ISO 9001: 2015
  • SVTI
  • AD 2000-W0
  • DGR 97/23/EG Anh. I, Absatz 4.3
  • AD 2000-HP 0
  • International welding specialist

Our locations

GSTech can be found at two locations.
In Germany, Waldenburg and in Bulgaria, Plovdiv.