welding contact tip 1.material:brass,copper,CuCrZr 2.model:m6,m8 3. ... .2mm 4.length:25mm,28mm,30mm,45mm.. CO2 welding torch contact tip We are trade company with partner factories professionally in producing ... well as welding accessaries such as welding contact tip,contact tip holder,welding electrode, electrode cap,electrode contact,etc. air plasma cutting torch welding torch ...