The diameter of the wire diameter wire is usually asked to choose according to the thickness of the weldment, welding position and efficiency. Use of less than 1.6mm wire (called filaments CO2 gas shielded arc) welding robbery position weld sheet or plate. The table wire diameter (mm) wire diameter selection glow droplet transitional forms welding position welding thickness (mm) 0.5 to 0.8 0.4 to 3 various short circuit transition position The fine particles transition 2 to 4 downhand horizontal angle 1.0 ~ 1.2 Short various positions of the transition from 2 to 8 The fine particles of the transition to 12 square welding, horizontal angle 1.6 short-circuit transition to 12 square welding, horizontal angle Fine particles transition> 8 flat welding, horizontal angle 2.0 to 2.5 fine particle transition> 10 flat welding, horizontal angle