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 > Automatic Ring Making & Welding Machine R-6-300 E Series
Product Picture


  • Model: R-6-300 E-Series
  • Input voltage: 380V(3-phase) or custom
  • Power frequency: 50/60Hz
  • Instant power during welding: 15KVA(for 4mm wire)
  • Instant power during forming: 2KVA
  • Wire thickness: 2-5mm
  • Max ring diameter: 300mm(can be customized to 600mm)
  • Min ring diameter: 70mm(can be customized to 50mm)
  • Ring perimeter tolerance: 0.5mm
  • Cooling: Natural cooling
  • Air flow required: 250L/min
  • Air pressure: 0.6-0.8MPa
  • Throughput: about 1560pcs/hr(for ring diameter 150mm)
  • Weight: 1000KG


R-6-300 E-Series is not equipped with digital regulation of ring sizes, the ranges of ring thickness and ring size are also less than R-6-300.
  • 1. High precision: intelligent "S" shape speed curve, the encoder and the motor form a closed-loop wire feeding control system, secure a diameter tolerance less than 0.16mm, eventually solve the ring precision issues inherent in the traditional mechanical or hydraulic ring making machines.
  • 2.High stability: wire feeding unit is driven by two motors directly without gears, belts or other transmission parts which would get less precise due to wear-out.
  • 3.Easy operation: ring size is adjusted by turning the wheels, much easier than traditional mechanical or hydraulic machines.
  • 4. Automatic ring welding: worker attendance is not required during machine operation.
  • 5. Compatible welding: capable of welding low, medium and high carbon steel, spring steel, galvanized steel.