ZGTEK offers fully-automatic ring forming and welding machines. the company also supplies simple machines which only form the rings, the welding needs to be done on a separate butt welder.

Automatic snap band making machine for filter bags, or snap band riveting machine, this machine is the fully automatic solution for the production of snap bands.

Based on different mesh sizes, wire thicknesses and aperture sizes, ZGTEK offers different solutions.

> Products > Top Collar Welder
Product Picture


  • Model: D4S-80-2
  • Input voltage: 380V(2-phase) or customized
  • Power frequency: 50/60Hz
  • Designed max capacity of transformer: 80KVA
  • Instant power during welding: 35KVA
  • Cooling: Natural cooling
  • Air flow: 100L/min
  • Air pressure: 0.6-0.8MPa
  • Insulation grade: F
  • Weight: 600KG


  • This machine is the high-end version of DS-80
  • When welding, DS-80 uses the top surface of the collar as reference plane, while D4S-80-2 uses the hanging surface as reference, which is exactly the way cages are mounted in the baghouses, also the top collar will be locked during welding, so it's much eaiser to achieve good perpendicularity
  • D4S-80-2: Top cap welder is integrated, can fully replace DS-80