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Welding and Testing Equipment.

Demtech Services, Inc. was founded in 1999 and within 8 months launched the Pro-Wedge hot wedge welder. It has become the welder of choice for many installers worldwide.

Since then, Demtech continue to utilize the latest innovative designs, engineering, and technology to update and improve their product line of wedge welders, extrusion welders, and many different types of testing equipment.

“Powered by Innovation,” Demtech equipment leads the industry for quality and affordability.


As the Master Distributor for DemTech in Sub-Saharan Africa, Zonke Engineering’s service offering includes:

  • Technical sales specific to your application requirements
  • Local stockholding of spare parts and machines
  • Service and maintenance
  • Machine calibration
  • Hands-on demonstration of proper operation of DemTech machines
  • Rental of machines
  • Onsite repairs and troubleshooting including electronic, mechanical and control aspects
  • Guidance on standards and specifications related to the geosynthetic industry
  • 24 hours, 7-days a week emergency assistance from our DemTech trained engineers and technicians
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