Technical parameters
1.Blowtorch: Mig kerosene blowtorch, aperture Φ25mm
2.Cover flame body: Back cut diameter 90±2mm End opening diameter 82±2mm
3.Round iron shield: Φ125±5mm
4.Porcelain crucible: 30ml±1ml
5.Internal iron crucible: Φ55±2mm
6.External iron crucible: Φ80±2mm